def import_from_csv(batch_import: BatchImport, user: User, lines):
reader = csv.DictReader(lines)
for row in reader:
try:
full_alias = sanitize_email(row["alias"])
note = row["note"]
except KeyError:
LOG.warning("Cannot parse row %s", row)
continue
alias_domain = get_email_domain_part(full_alias)
custom_domain = CustomDomain.get_by(domain=alias_domain)
if (not custom_domain or not custom_domain.verified
or custom_domain.user_id != user.id):
LOG.debug("domain %s can't be used %s", alias_domain, user)
continue
if (Alias.get_by(email=full_alias)
or DeletedAlias.get_by(email=full_alias)
or DomainDeletedAlias.get_by(email=full_alias)):
LOG.d("alias already used %s", full_alias)
continue
mailboxes = []
if "mailboxes" in row:
for mailbox_email in row["mailboxes"].split():
mailbox_email = sanitize_email(mailbox_email)
mailbox = Mailbox.get_by(email=mailbox_email)
if not mailbox or not mailbox.verified or mailbox.user_id != user.id:
LOG.d("mailbox %s can't be used %s", mailbox, user)
continue
mailboxes.append(mailbox.id)
if len(mailboxes) == 0:
mailboxes = [user.default_mailbox_id]
alias = Alias.create(
user_id=user.id,
email=full_alias,
note=note,
mailbox_id=mailboxes[0],
custom_domain_id=custom_domain.id,
batch_import_id=batch_import.id,
)
db.session.commit()
db.session.flush()
LOG.d("Create %s", alias)
for i in range(1, len(mailboxes)):
alias_mailbox = AliasMailbox.create(
alias_id=alias.id,
mailbox_id=mailboxes[i],
)
db.session.commit()
LOG.d("Create %s", alias_mailbox)
def send_email_with_rate_control(
user: User,
alert_type: str,
to_email: str,
subject,
plaintext,
html=None,
max_nb_alert=MAX_ALERT_24H,
nb_day=1,
) -> bool:
"""Same as send_email with rate control over alert_type.
Make sure no more than `max_nb_alert` emails are sent over the period of `nb_day` days
Return true if the email is sent, otherwise False
"""
to_email = sanitize_email(to_email)
min_dt = arrow.now().shift(days=-1 * nb_day)
nb_alert = (SentAlert.query.filter_by(
alert_type=alert_type,
to_email=to_email).filter(SentAlert.created_at > min_dt).count())
if nb_alert >= max_nb_alert:
LOG.warning(
"%s emails were sent to %s in the last %s days, alert type %s",
nb_alert,
to_email,
nb_day,
alert_type,
)
return False
SentAlert.create(user_id=user.id, alert_type=alert_type, to_email=to_email)
db.session.commit()
send_email(to_email, subject, plaintext, html)
return True
def resend_activation():
form = ResendActivationForm(request.form)
if form.validate_on_submit():
user = User.filter_by(email=sanitize_email(form.email.data)).first()
if not user:
flash("There is no such email", "warning")
return render_template("auth/resend_activation.html", form=form)
if user.activated:
flash("Your account was already activated, please login",
"success")
return redirect(url_for("auth.login"))
# user is not activated
LOG.d("user %s is not activated", user)
flash(
"An activation email has been sent to you. Please check your inbox/spam folder.",
"warning",
)
send_activation_email(user, request.args.get("next"))
return render_template("auth/register_waiting_activation.html")
return render_template("auth/resend_activation.html", form=form)
def send_email_at_most_times(
user: User,
alert_type: str,
to_email: str,
subject,
plaintext,
html=None,
max_times=1,
) -> bool:
"""Same as send_email with rate control over alert_type.
Sent at most `max_times`
This is used to inform users about a warning.
Return true if the email is sent, otherwise False
"""
to_email = sanitize_email(to_email)
nb_alert = SentAlert.query.filter_by(
alert_type=alert_type, to_email=to_email
).count()
if nb_alert >= max_times:
LOG.warning(
"%s emails were sent to %s alert type %s",
nb_alert,
to_email,
alert_type,
)
return False
SentAlert.create(user_id=user.id, alert_type=alert_type, to_email=to_email)
db.session.commit()
send_email(to_email, subject, plaintext, html)
return True
def get_email_domain_part(address):
"""
Get the domain part from email
[email protected] -> cd.com
"""
address = sanitize_email(address)
return address[address.find("@") + 1 :]
def create_mailbox():
"""
Create a new mailbox. User needs to verify the mailbox via an activation email.
Input:
email: in body
Output:
the new mailbox dict
"""
user = g.user
mailbox_email = sanitize_email(request.get_json().get("email"))
if not is_valid_email(mailbox_email):
return jsonify(error=f"{mailbox_email} invalid"), 400
elif mailbox_already_used(mailbox_email, user):
return jsonify(error=f"{mailbox_email} already used"), 400
elif not email_can_be_used_as_mailbox(mailbox_email):
return (
jsonify(
error=
f"{mailbox_email} cannot be used. Please note a mailbox cannot "
f"be a disposable email address"),
400,
)
else:
new_mailbox = Mailbox.create(email=mailbox_email, user_id=user.id)
db.session.commit()
send_verification_email(user, new_mailbox)
return (
jsonify(mailbox_to_dict(new_mailbox)),
201,
)
def create_contact_route(alias_id):
"""
Create contact for an alias
Input:
alias_id: in url
contact: in body
Output:
201 if success
409 if contact already added
"""
data = request.get_json()
if not data:
return jsonify(error="request body cannot be empty"), 400
user = g.user
alias: Alias = Alias.get(alias_id)
if alias.user_id != user.id:
return jsonify(error="Forbidden"), 403
contact_addr = data.get("contact")
if not contact_addr:
return jsonify(error="Contact cannot be empty"), 400
full_address: EmailAddress = address.parse(contact_addr)
if not full_address:
return jsonify(error=f"invalid contact email {contact_addr}"), 400
contact_name, contact_email = full_address.display_name, full_address.address
contact_email = sanitize_email(contact_email, not_lower=True)
# already been added
contact = Contact.get_by(alias_id=alias.id, website_email=contact_email)
if contact:
return jsonify(**serialize_contact(contact, existed=True)), 200
try:
contact = Contact.create(
user_id=alias.user_id,
alias_id=alias.id,
website_email=contact_email,
name=contact_name,
reply_email=generate_reply_email(contact_email, user),
)
except CannotCreateContactForReverseAlias:
return jsonify(
error="You can't create contact for a reverse alias"), 400
LOG.d("create reverse-alias for %s %s", contact_addr, alias)
Session.commit()
return jsonify(**serialize_contact(contact)), 201
def auth_activate():
"""
User enters the activation code to confirm their account.
Input:
email
code
Output:
200: user account is now activated, user can login now
400: wrong email, code
410: wrong code too many times
"""
data = request.get_json()
if not data:
return jsonify(error="request body cannot be empty"), 400
email = sanitize_email(data.get("email"))
code = data.get("code")
user = User.get_by(email=email)
# do not use a different message to avoid exposing existing email
if not user or user.activated:
# Trigger rate limiter
g.deduct_limit = True
return jsonify(error="Wrong email or code"), 400
account_activation = AccountActivation.get_by(user_id=user.id)
if not account_activation:
# Trigger rate limiter
g.deduct_limit = True
return jsonify(error="Wrong email or code"), 400
if account_activation.code != code:
# decrement nb tries
account_activation.tries -= 1
db.session.commit()
# Trigger rate limiter
g.deduct_limit = True
if account_activation.tries == 0:
AccountActivation.delete(account_activation.id)
db.session.commit()
return jsonify(error="Too many wrong tries"), 410
return jsonify(error="Wrong email or code"), 400
LOG.debug("activate user %s", user)
user.activated = True
AccountActivation.delete(account_activation.id)
db.session.commit()
return jsonify(msg="Account is activated, user can login now"), 200
def create_contact_route(alias_id):
"""
Create contact for an alias
Input:
alias_id: in url
contact: in body
Output:
201 if success
409 if contact already added
"""
data = request.get_json()
if not data:
return jsonify(error="request body cannot be empty"), 400
user = g.user
alias: Alias = Alias.get(alias_id)
if alias.user_id != user.id:
return jsonify(error="Forbidden"), 403
contact_addr = data.get("contact")
if not contact_addr:
return jsonify(error="Contact cannot be empty"), 400
contact_name, contact_email = parseaddr_unicode(contact_addr)
if not is_valid_email(contact_email):
return jsonify(error=f"invalid contact email {contact_email}"), 400
contact_email = sanitize_email(contact_email)
# already been added
contact = Contact.get_by(alias_id=alias.id, website_email=contact_email)
if contact:
return jsonify(**serialize_contact(contact, existed=True)), 200
contact = Contact.create(
user_id=alias.user_id,
alias_id=alias.id,
website_email=contact_email,
name=contact_name,
reply_email=generate_reply_email(contact_email, user),
)
LOG.d("create reverse-alias for %s %s", contact_addr, alias)
db.session.commit()
return jsonify(**serialize_contact(contact)), 201
def auth_google():
"""
Authenticate user with Facebook
Input:
google_token: Google access token
device: to create an ApiKey associated with this device
Output:
200 and user info containing:
{
name: "John Wick",
mfa_enabled: true,
mfa_key: "a long string",
api_key: "a long string"
}
"""
data = request.get_json()
if not data:
return jsonify(error="request body cannot be empty"), 400
google_token = data.get("google_token")
device = data.get("device")
cred = google.oauth2.credentials.Credentials(token=google_token)
build = googleapiclient.discovery.build("oauth2", "v2", credentials=cred)
user_info = build.userinfo().get().execute()
email = sanitize_email(user_info.get("email"))
user = User.get_by(email=email)
if not user:
if DISABLE_REGISTRATION:
return jsonify(error="registration is closed"), 400
if not email_can_be_used_as_mailbox(email) or personal_email_already_used(
email
):
return jsonify(error=f"cannot use {email} as personal inbox"), 400
LOG.d("create Google user with %s", user_info)
user = User.create(email=email, name="", activated=True)
db.session.commit()
email_utils.send_welcome_email(user)
if not SocialAuth.get_by(user_id=user.id, social="google"):
SocialAuth.create(user_id=user.id, social="google")
db.session.commit()
return jsonify(**auth_payload(user, device)), 200
def sanitize_alias_address_name():
count = 0
# using Alias.all() will take all the memory
for alias in Alias.yield_per_query():
if count % 1000 == 0:
LOG.d("process %s", count)
count += 1
if sanitize_email(alias.email) != alias.email:
LOG.e("Alias %s email not sanitized", alias)
if alias.name and "\n" in alias.name:
alias.name = alias.name.replace("\n", "")
Session.commit()
LOG.e("Alias %s name contains linebreak %s", alias, alias.name)
def auth_facebook():
"""
Authenticate user with Facebook
Input:
facebook_token: facebook access token
device: to create an ApiKey associated with this device
Output:
200 and user info containing:
{
name: "John Wick",
mfa_enabled: true,
mfa_key: "a long string",
api_key: "a long string"
}
"""
data = request.get_json()
if not data:
return jsonify(error="request body cannot be empty"), 400
facebook_token = data.get("facebook_token")
device = data.get("device")
graph = facebook.GraphAPI(access_token=facebook_token)
user_info = graph.get_object("me", fields="email,name")
email = sanitize_email(user_info.get("email"))
user = User.get_by(email=email)
if not user:
if DISABLE_REGISTRATION:
return jsonify(error="registration is closed"), 400
if not email_can_be_used_as_mailbox(email) or personal_email_already_used(
email
):
return jsonify(error=f"cannot use {email} as personal inbox"), 400
LOG.d("create facebook user with %s", user_info)
user = User.create(email=email, name=user_info["name"], activated=True)
db.session.commit()
email_utils.send_welcome_email(user)
if not SocialAuth.get_by(user_id=user.id, social="facebook"):
SocialAuth.create(user_id=user.id, social="facebook")
db.session.commit()
return jsonify(**auth_payload(user, device)), 200
def handle_batch_import(batch_import: BatchImport):
user = batch_import.user
batch_import.processed = True
db.session.commit()
LOG.debug("Start batch import for %s %s", batch_import, user)
file_url = s3.get_url(batch_import.file.path)
LOG.d("Download file %s from %s", batch_import.file, file_url)
r = requests.get(file_url)
lines = [line.decode() for line in r.iter_lines()]
reader = csv.DictReader(lines)
for row in reader:
try:
full_alias = sanitize_email(row["alias"])
note = row["note"]
except KeyError:
LOG.warning("Cannot parse row %s", row)
continue
alias_domain = get_email_domain_part(full_alias)
custom_domain = CustomDomain.get_by(domain=alias_domain)
if (not custom_domain or not custom_domain.verified
or custom_domain.user_id != user.id):
LOG.debug("domain %s can't be used %s", alias_domain, user)
continue
if (Alias.get_by(email=full_alias)
or DeletedAlias.get_by(email=full_alias)
or DomainDeletedAlias.get_by(email=full_alias)):
LOG.d("alias already used %s", full_alias)
continue
alias = Alias.create(
user_id=user.id,
email=full_alias,
note=note,
mailbox_id=user.default_mailbox_id,
custom_domain_id=custom_domain.id,
batch_import_id=batch_import.id,
)
db.session.commit()
LOG.d("Create %s", alias)
def auth_register():
"""
User signs up - will need to activate their account with an activation code.
Input:
email
password
Output:
200: user needs to confirm their account
"""
data = request.get_json()
if not data:
return jsonify(error="request body cannot be empty"), 400
email = sanitize_email(data.get("email"))
password = data.get("password")
if DISABLE_REGISTRATION:
return jsonify(error="registration is closed"), 400
if not email_can_be_used_as_mailbox(email) or personal_email_already_used(
email):
return jsonify(error=f"cannot use {email} as personal inbox"), 400
if not password or len(password) < 8:
return jsonify(error="password too short"), 400
if len(password) > 100:
return jsonify(error="password too long"), 400
LOG.d("create user %s", email)
user = User.create(email=email, name="", password=password)
Session.flush()
# create activation code
code = "".join([str(random.randint(0, 9)) for _ in range(6)])
AccountActivation.create(user_id=user.id, code=code)
Session.commit()
send_email(
email,
"Just one more step to join SimpleLogin",
render("transactional/code-activation.txt.jinja2", code=code),
render("transactional/code-activation.html", code=code),
)
return jsonify(msg="User needs to confirm their account"), 200
def send_email_with_rate_control(
user: User,
alert_type: str,
to_email: str,
subject,
plaintext,
html=None,
max_nb_alert=MAX_ALERT_24H,
nb_day=1,
ignore_smtp_error=False,
retries=0,
) -> bool:
"""Same as send_email with rate control over alert_type.
Make sure no more than `max_nb_alert` emails are sent over the period of `nb_day` days
Return true if the email is sent, otherwise False
"""
to_email = sanitize_email(to_email)
min_dt = arrow.now().shift(days=-1 * nb_day)
nb_alert = (SentAlert.filter_by(
alert_type=alert_type,
to_email=to_email).filter(SentAlert.created_at > min_dt).count())
if nb_alert >= max_nb_alert:
LOG.w(
"%s emails were sent to %s in the last %s days, alert type %s",
nb_alert,
to_email,
nb_day,
alert_type,
)
return False
SentAlert.create(user_id=user.id, alert_type=alert_type, to_email=to_email)
Session.commit()
if ignore_smtp_error:
try:
send_email(to_email, subject, plaintext, html, retries=retries)
except SMTPException:
LOG.w("Cannot send email to %s, subject %s", to_email, subject)
else:
send_email(to_email, subject, plaintext, html, retries=retries)
return True
def login():
next_url = request.args.get("next")
if current_user.is_authenticated:
if next_url:
LOG.debug("user is already authenticated, redirect to %s",
next_url)
return redirect(next_url)
else:
LOG.d("user is already authenticated, redirect to dashboard")
return redirect(url_for("dashboard.index"))
form = LoginForm(request.form)
show_resend_activation = False
if form.validate_on_submit():
user = User.filter_by(email=sanitize_email(form.email.data)).first()
if not user or not user.check_password(form.password.data):
# Trigger rate limiter
g.deduct_limit = True
form.password.data = None
flash("Email or password incorrect", "error")
elif user.disabled:
flash(
"Your account is disabled. Please contact SimpleLogin team to re-enable your account.",
"error",
)
elif not user.activated:
show_resend_activation = True
flash(
"Please check your inbox for the activation email. You can also have this email re-sent",
"error",
)
else:
return after_login(user, next_url)
return render_template(
"auth/login.html",
form=form,
next_url=next_url,
show_resend_activation=show_resend_activation,
)
def generate_reply_email(contact_email: str, user: User) -> str:
"""
generate a reply_email (aka reverse-alias), make sure it isn't used by any contact
"""
# shorten email to avoid exceeding the 64 characters
# from https://tools.ietf.org/html/rfc5321#section-4.5.3
# "The maximum total length of a user name or other local-part is 64
# octets."
include_sender_in_reverse_alias = False
# user has chosen an option explicitly
if user.include_sender_in_reverse_alias is not None:
include_sender_in_reverse_alias = user.include_sender_in_reverse_alias
if include_sender_in_reverse_alias and contact_email:
# control char: 4 chars (ra+, +)
# random suffix: max 10 chars
# maximum: 64
# make sure contact_email can be ascii-encoded
contact_email = convert_to_id(contact_email)
contact_email = sanitize_email(contact_email)
contact_email = contact_email[:45]
contact_email = contact_email.replace("@", ".at.")
contact_email = convert_to_alphanumeric(contact_email)
# not use while to avoid infinite loop
for _ in range(1000):
if include_sender_in_reverse_alias and contact_email:
random_length = random.randint(5, 10)
reply_email = (
f"ra+{contact_email}+{random_string(random_length)}@{EMAIL_DOMAIN}"
)
else:
random_length = random.randint(20, 50)
reply_email = f"ra+{random_string(random_length)}@{EMAIL_DOMAIN}"
if not Contact.get_by(reply_email=reply_email):
return reply_email
raise Exception("Cannot generate reply email")
def auth_login():
"""
Authenticate user
Input:
email
password
device: to create an ApiKey associated with this device
Output:
200 and user info containing:
{
name: "John Wick",
mfa_enabled: true,
mfa_key: "a long string",
api_key: "a long string"
}
"""
data = request.get_json()
if not data:
return jsonify(error="request body cannot be empty"), 400
email = sanitize_email(data.get("email"))
password = data.get("password")
device = data.get("device")
user = User.filter_by(email=email).first()
if not user or not user.check_password(password):
# Trigger rate limiter
g.deduct_limit = True
return jsonify(error="Email or password incorrect"), 400
elif user.disabled:
return jsonify(error="Account disabled"), 400
elif not user.activated:
return jsonify(error="Account not activated"), 400
elif user.fido_enabled():
# allow user who has TOTP enabled to continue using the mobile app
if not user.enable_otp:
return jsonify(
error="Currently we don't support FIDO on mobile yet"), 403
return jsonify(**auth_payload(user, device)), 200
def forgot_password():
form = ForgotPasswordForm(request.form)
if form.validate_on_submit():
email = sanitize_email(form.email.data)
flash(
"If your email is correct, you are going to receive an email to reset your password",
"success",
)
user = User.get_by(email=email)
if user:
send_reset_password_email(user)
return redirect(url_for("auth.forgot_password"))
# Trigger rate limiter
g.deduct_limit = True
return render_template("auth/forgot_password.html", form=form)
def forgot_password():
"""
User forgot password
Input:
email
Output:
200 and a reset password email is sent to user
400 if email not exist
"""
data = request.get_json()
if not data or not data.get("email"):
return jsonify(error="request body must contain email"), 400
email = sanitize_email(data.get("email"))
user = User.get_by(email=email)
if user:
send_reset_password_email(user)
return jsonify(ok=True)
def auth_reactivate():
"""
User asks for another activation code
Input:
email
Output:
200: user is going to receive an email for activate their account
"""
data = request.get_json()
if not data:
return jsonify(error="request body cannot be empty"), 400
email = sanitize_email(data.get("email"))
user = User.get_by(email=email)
# do not use a different message to avoid exposing existing email
if not user or user.activated:
return jsonify(error="Something went wrong"), 400
account_activation = AccountActivation.get_by(user_id=user.id)
if account_activation:
AccountActivation.delete(account_activation.id)
db.session.commit()
# create activation code
code = "".join([str(random.randint(0, 9)) for _ in range(6)])
AccountActivation.create(user_id=user.id, code=code)
db.session.commit()
send_email(
email,
"Just one more step to join SimpleLogin",
render("transactional/code-activation.txt", code=code),
render("transactional/code-activation.html", code=code),
)
return jsonify(msg="User needs to confirm their account"), 200
def setting():
form = SettingForm()
promo_form = PromoCodeForm()
change_email_form = ChangeEmailForm()
email_change = EmailChange.get_by(user_id=current_user.id)
if email_change:
pending_email = email_change.new_email
else:
pending_email = None
if request.method == "POST":
if request.form.get("form-name") == "update-email":
if change_email_form.validate():
# whether user can proceed with the email update
new_email_valid = True
if (sanitize_email(change_email_form.email.data) !=
current_user.email and not pending_email):
new_email = sanitize_email(change_email_form.email.data)
# check if this email is not already used
if personal_email_already_used(new_email) or Alias.get_by(
email=new_email):
flash(f"Email {new_email} already used", "error")
new_email_valid = False
elif not email_can_be_used_as_mailbox(new_email):
flash(
"You cannot use this email address as your personal inbox.",
"error",
)
new_email_valid = False
# a pending email change with the same email exists from another user
elif EmailChange.get_by(new_email=new_email):
other_email_change: EmailChange = EmailChange.get_by(
new_email=new_email)
LOG.warning(
"Another user has a pending %s with the same email address. Current user:%s",
other_email_change,
current_user,
)
if other_email_change.is_expired():
LOG.d("delete the expired email change %s",
other_email_change)
EmailChange.delete(other_email_change.id)
db.session.commit()
else:
flash(
"You cannot use this email address as your personal inbox.",
"error",
)
new_email_valid = False
if new_email_valid:
email_change = EmailChange.create(
user_id=current_user.id,
code=random_string(
60), # todo: make sure the code is unique
new_email=new_email,
)
db.session.commit()
send_change_email_confirmation(current_user,
email_change)
flash(
"A confirmation email is on the way, please check your inbox",
"success",
)
return redirect(url_for("dashboard.setting"))
if request.form.get("form-name") == "update-profile":
if form.validate():
profile_updated = False
# update user info
if form.name.data != current_user.name:
current_user.name = form.name.data
db.session.commit()
profile_updated = True
if form.profile_picture.data:
file_path = random_string(30)
file = File.create(user_id=current_user.id, path=file_path)
s3.upload_from_bytesio(
file_path, BytesIO(form.profile_picture.data.read()))
db.session.flush()
LOG.d("upload file %s to s3", file)
current_user.profile_picture_id = file.id
db.session.commit()
profile_updated = True
if profile_updated:
flash("Your profile has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "change-password":
flash(
"You are going to receive an email containing instructions to change your password",
"success",
)
send_reset_password_email(current_user)
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "notification-preference":
choose = request.form.get("notification")
if choose == "on":
current_user.notification = True
else:
current_user.notification = False
db.session.commit()
flash("Your notification preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "delete-account":
LOG.warning("Delete account %s", current_user)
User.delete(current_user.id)
db.session.commit()
flash("Your account has been deleted", "success")
logout_user()
return redirect(url_for("auth.register"))
elif request.form.get("form-name") == "change-alias-generator":
scheme = int(request.form.get("alias-generator-scheme"))
if AliasGeneratorEnum.has_value(scheme):
current_user.alias_generator = scheme
db.session.commit()
flash("Your preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get(
"form-name") == "change-random-alias-default-domain":
default_domain = request.form.get("random-alias-default-domain")
if default_domain:
sl_domain: SLDomain = SLDomain.get_by(domain=default_domain)
if sl_domain:
if sl_domain.premium_only and not current_user.is_premium(
):
flash("You cannot use this domain", "error")
return redirect(url_for("dashboard.setting"))
current_user.default_alias_public_domain_id = sl_domain.id
current_user.default_alias_custom_domain_id = None
else:
custom_domain = CustomDomain.get_by(domain=default_domain)
if custom_domain:
# sanity check
if (custom_domain.user_id != current_user.id
or not custom_domain.verified):
LOG.exception("%s cannot use domain %s",
current_user, default_domain)
else:
current_user.default_alias_custom_domain_id = (
custom_domain.id)
current_user.default_alias_public_domain_id = None
else:
current_user.default_alias_custom_domain_id = None
current_user.default_alias_public_domain_id = None
db.session.commit()
flash("Your preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "change-sender-format":
sender_format = int(request.form.get("sender-format"))
if SenderFormatEnum.has_value(sender_format):
current_user.sender_format = sender_format
current_user.sender_format_updated_at = arrow.now()
db.session.commit()
flash("Your sender format preference has been updated",
"success")
db.session.commit()
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "replace-ra":
choose = request.form.get("replace-ra")
if choose == "on":
current_user.replace_reverse_alias = True
else:
current_user.replace_reverse_alias = False
db.session.commit()
flash("Your preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "sender-in-ra":
choose = request.form.get("enable")
if choose == "on":
current_user.include_sender_in_reverse_alias = True
else:
current_user.include_sender_in_reverse_alias = False
db.session.commit()
flash("Your preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "export-data":
data = {
"email": current_user.email,
"name": current_user.name,
"aliases": [],
"apps": [],
"custom_domains": [],
}
for alias in Alias.filter_by(
user_id=current_user.id).all(): # type: Alias
data["aliases"].append(
dict(email=alias.email, enabled=alias.enabled))
for custom_domain in CustomDomain.filter_by(
user_id=current_user.id).all():
data["custom_domains"].append(custom_domain.domain)
for app in Client.filter_by(
user_id=current_user.id): # type: Client
data["apps"].append(
dict(name=app.name,
home_url=app.home_url,
published=app.published))
return Response(
json.dumps(data),
mimetype="text/json",
headers={
"Content-Disposition": "attachment;filename=data.json"
},
)
elif request.form.get("form-name") == "export-alias":
data = [["alias", "note", "enabled"]]
for alias in Alias.filter_by(
user_id=current_user.id).all(): # type: Alias
data.append([alias.email, alias.note, alias.enabled])
si = StringIO()
cw = csv.writer(si)
cw.writerows(data)
output = make_response(si.getvalue())
output.headers[
"Content-Disposition"] = "attachment; filename=aliases.csv"
output.headers["Content-type"] = "text/csv"
return output
manual_sub = ManualSubscription.get_by(user_id=current_user.id)
coinbase_sub = CoinbaseSubscription.get_by(user_id=current_user.id)
return render_template(
"dashboard/setting.html",
form=form,
PlanEnum=PlanEnum,
SenderFormatEnum=SenderFormatEnum,
promo_form=promo_form,
change_email_form=change_email_form,
pending_email=pending_email,
AliasGeneratorEnum=AliasGeneratorEnum,
manual_sub=manual_sub,
coinbase_sub=coinbase_sub,
FIRST_ALIAS_DOMAIN=FIRST_ALIAS_DOMAIN,
)
def update_mailbox(mailbox_id):
"""
Update mailbox
Input:
mailbox_id: in url
(optional) default: in body. Set a mailbox as the default mailbox.
(optional) email: in body. Change a mailbox email.
(optional) cancel_email_change: in body. Cancel mailbox email change.
Output:
200 if updated successfully
"""
user = g.user
mailbox = Mailbox.get(mailbox_id)
if not mailbox or mailbox.user_id != user.id:
return jsonify(error="Forbidden"), 403
data = request.get_json() or {}
changed = False
if "default" in data:
is_default = data.get("default")
if is_default:
if not mailbox.verified:
return (
jsonify(
error=
"Unverified mailbox cannot be used as default mailbox"
),
400,
)
user.default_mailbox_id = mailbox.id
changed = True
if "email" in data:
new_email = sanitize_email(data.get("email"))
if mailbox_already_used(new_email, user):
return jsonify(error=f"{new_email} already used"), 400
elif not email_can_be_used_as_mailbox(new_email):
return (
jsonify(
error=
f"{new_email} cannot be used. Please note a mailbox cannot "
f"be a disposable email address"),
400,
)
try:
verify_mailbox_change(user, mailbox, new_email)
except SMTPRecipientsRefused:
return jsonify(
error=f"Incorrect mailbox, please recheck {new_email}"), 400
else:
mailbox.new_email = new_email
changed = True
if "cancel_email_change" in data:
cancel_email_change = data.get("cancel_email_change")
if cancel_email_change:
mailbox.new_email = None
changed = True
if changed:
Session.commit()
return jsonify(updated=True), 200
def github_callback():
# user clicks on cancel
if "error" in request.args:
flash("Please use another sign in method then", "warning")
return redirect("/")
github = OAuth2Session(
GITHUB_CLIENT_ID,
state=session["oauth_state"],
scope=["user:email"],
redirect_uri=_redirect_uri,
)
github.fetch_token(
_token_url,
client_secret=GITHUB_CLIENT_SECRET,
authorization_response=request.url,
)
# a dict with "name", "login"
github_user_data = github.get("https://api.github.com/user").json()
# return list of emails
# {
# 'email': '*****@*****.**',
# 'primary': False,
# 'verified': True,
# 'visibility': None
# }
emails = github.get("https://api.github.com/user/emails").json()
# only take the primary email
email = None
for e in emails:
if e.get("verified") and e.get("primary"):
email = e.get("email")
break
if not email:
LOG.e(f"cannot get email for github user {github_user_data} {emails}")
flash(
"Cannot get a valid email from Github, please another way to login/sign up",
"error",
)
return redirect(url_for("auth.login"))
email = sanitize_email(email)
user = User.get_by(email=email)
if not user:
flash(
"Sorry you cannot sign up via Github, please use email/password sign-up instead",
"error",
)
return redirect(url_for("auth.register"))
if not SocialAuth.get_by(user_id=user.id, social="github"):
SocialAuth.create(user_id=user.id, social="github")
Session.commit()
# The activation link contains the original page, for ex authorize page
next_url = request.args.get("next") if request.args else None
return after_login(user, next_url)
def google_callback():
# user clicks on cancel
if "error" in request.args:
flash("please use another sign in method then", "warning")
return redirect("/")
google = OAuth2Session(
GOOGLE_CLIENT_ID,
# some how Google Login fails with oauth_state KeyError
# state=session["oauth_state"],
scope=_scope,
redirect_uri=_redirect_uri,
)
google.fetch_token(
_token_url,
client_secret=GOOGLE_CLIENT_SECRET,
authorization_response=request.url,
)
# Fetch a protected resource, i.e. user profile
# {
# "email": "*****@*****.**",
# "family_name": "First name",
# "given_name": "Last name",
# "id": "1234",
# "locale": "en",
# "name": "First Last",
# "picture": "http://profile.jpg",
# "verified_email": true
# }
google_user_data = google.get(
"https://www.googleapis.com/oauth2/v1/userinfo").json()
email = sanitize_email(google_user_data["email"])
user = User.get_by(email=email)
picture_url = google_user_data.get("picture")
if user:
if picture_url and not user.profile_picture_id:
LOG.d("set user profile picture to %s", picture_url)
file = create_file_from_url(user, picture_url)
user.profile_picture_id = file.id
db.session.commit()
else:
flash(
"Sorry you cannot sign up via Google, please use email/password sign-up instead",
"error",
)
return redirect(url_for("auth.register"))
next_url = None
# The activation link contains the original page, for ex authorize page
if "google_next_url" in session:
next_url = session["google_next_url"]
LOG.debug("redirect user to %s", next_url)
# reset the next_url to avoid user getting redirected at each login :)
session.pop("google_next_url", None)
if not SocialAuth.get_by(user_id=user.id, social="google"):
SocialAuth.create(user_id=user.id, social="google")
db.session.commit()
return after_login(user, next_url)
def sanity_check():
"""
#TODO: investigate why DNS sometimes not working
Different sanity checks
- detect if there's mailbox that's using a invalid domain
"""
mailbox_ids = (
db.session.query(Mailbox.id)
.filter(Mailbox.verified.is_(True), Mailbox.disabled.is_(False))
.all()
)
mailbox_ids = [e[0] for e in mailbox_ids]
# iterate over id instead of mailbox directly
# as a mailbox can be deleted during the sleep time
for mailbox_id in mailbox_ids:
mailbox = Mailbox.get(mailbox_id)
# a mailbox has been deleted
if not mailbox:
continue
# hack to not query DNS too often
sleep(1)
if not email_can_be_used_as_mailbox(mailbox.email):
mailbox.nb_failed_checks += 1
nb_email_log = nb_email_log_for_mailbox(mailbox)
# send a warning
if mailbox.nb_failed_checks == 5:
if mailbox.user.email != mailbox.email:
send_email(
mailbox.user.email,
f"Mailbox {mailbox.email} is disabled",
render(
"transactional/disable-mailbox-warning.txt", mailbox=mailbox
),
render(
"transactional/disable-mailbox-warning.html",
mailbox=mailbox,
),
)
# alert if too much fail and nb_email_log > 100
if mailbox.nb_failed_checks > 10 and nb_email_log > 100:
mailbox.disabled = True
if mailbox.user.email != mailbox.email:
send_email(
mailbox.user.email,
f"Mailbox {mailbox.email} is disabled",
render("transactional/disable-mailbox.txt", mailbox=mailbox),
render("transactional/disable-mailbox.html", mailbox=mailbox),
)
LOG.warning(
"issue with mailbox %s domain. #alias %s, nb email log %s",
mailbox,
mailbox.nb_alias(),
nb_email_log,
)
else: # reset nb check
mailbox.nb_failed_checks = 0
db.session.commit()
for user in User.filter_by(activated=True).all():
if sanitize_email(user.email) != user.email:
LOG.exception("%s does not have sanitized email", user)
for alias in Alias.query.all():
if sanitize_email(alias.email) != alias.email:
LOG.exception("Alias %s email not sanitized", alias)
if alias.name and "\n" in alias.name:
alias.name = alias.name.replace("\n", "")
db.session.commit()
LOG.exception("Alias %s name contains linebreak %s", alias, alias.name)
contact_email_sanity_date = arrow.get("2021-01-12")
for contact in Contact.query.all():
if sanitize_email(contact.reply_email) != contact.reply_email:
LOG.exception("Contact %s reply-email not sanitized", contact)
if (
sanitize_email(contact.website_email) != contact.website_email
and contact.created_at > contact_email_sanity_date
):
LOG.exception("Contact %s website-email not sanitized", contact)
if not contact.invalid_email and not is_valid_email(contact.website_email):
LOG.exception("%s invalid email", contact)
contact.invalid_email = True
db.session.commit()
for mailbox in Mailbox.query.all():
if sanitize_email(mailbox.email) != mailbox.email:
LOG.exception("Mailbox %s address not sanitized", mailbox)
for contact in Contact.query.all():
if normalize_reply_email(contact.reply_email) != contact.reply_email:
LOG.exception(
"Contact %s reply email is not normalized %s",
contact,
contact.reply_email,
)
for domain in CustomDomain.query.all():
if domain.name and "\n" in domain.name:
LOG.exception("Domain %s name contain linebreak %s", domain, domain.name)
migrate_domain_trash()
set_custom_domain_for_alias()
LOG.d("Finish sanity check")
def setting():
form = SettingForm()
promo_form = PromoCodeForm()
change_email_form = ChangeEmailForm()
email_change = EmailChange.get_by(user_id=current_user.id)
if email_change:
pending_email = email_change.new_email
else:
pending_email = None
if request.method == "POST":
if request.form.get("form-name") == "update-email":
if change_email_form.validate():
# whether user can proceed with the email update
new_email_valid = True
if (sanitize_email(change_email_form.email.data) !=
current_user.email and not pending_email):
new_email = sanitize_email(change_email_form.email.data)
# check if this email is not already used
if personal_email_already_used(new_email) or Alias.get_by(
email=new_email):
flash(f"Email {new_email} already used", "error")
new_email_valid = False
elif not email_can_be_used_as_mailbox(new_email):
flash(
"You cannot use this email address as your personal inbox.",
"error",
)
new_email_valid = False
# a pending email change with the same email exists from another user
elif EmailChange.get_by(new_email=new_email):
other_email_change: EmailChange = EmailChange.get_by(
new_email=new_email)
LOG.warning(
"Another user has a pending %s with the same email address. Current user:%s",
other_email_change,
current_user,
)
if other_email_change.is_expired():
LOG.d("delete the expired email change %s",
other_email_change)
EmailChange.delete(other_email_change.id)
db.session.commit()
else:
flash(
"You cannot use this email address as your personal inbox.",
"error",
)
new_email_valid = False
if new_email_valid:
email_change = EmailChange.create(
user_id=current_user.id,
code=random_string(
60), # todo: make sure the code is unique
new_email=new_email,
)
db.session.commit()
send_change_email_confirmation(current_user,
email_change)
flash(
"A confirmation email is on the way, please check your inbox",
"success",
)
return redirect(url_for("dashboard.setting"))
if request.form.get("form-name") == "update-profile":
if form.validate():
profile_updated = False
# update user info
if form.name.data != current_user.name:
current_user.name = form.name.data
db.session.commit()
profile_updated = True
if form.profile_picture.data:
file_path = random_string(30)
file = File.create(user_id=current_user.id, path=file_path)
s3.upload_from_bytesio(
file_path, BytesIO(form.profile_picture.data.read()))
db.session.flush()
LOG.d("upload file %s to s3", file)
current_user.profile_picture_id = file.id
db.session.commit()
profile_updated = True
if profile_updated:
flash("Your profile has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "change-password":
flash(
"You are going to receive an email containing instructions to change your password",
"success",
)
send_reset_password_email(current_user)
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "notification-preference":
choose = request.form.get("notification")
if choose == "on":
current_user.notification = True
else:
current_user.notification = False
db.session.commit()
flash("Your notification preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "delete-account":
# Schedule delete account job
LOG.warning("schedule delete account job for %s", current_user)
Job.create(
name=JOB_DELETE_ACCOUNT,
payload={"user_id": current_user.id},
run_at=arrow.now(),
commit=True,
)
flash(
"Your account deletion has been scheduled. "
"You'll receive an email when the deletion is finished",
"success",
)
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "change-alias-generator":
scheme = int(request.form.get("alias-generator-scheme"))
if AliasGeneratorEnum.has_value(scheme):
current_user.alias_generator = scheme
db.session.commit()
flash("Your preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get(
"form-name") == "change-random-alias-default-domain":
default_domain = request.form.get("random-alias-default-domain")
if default_domain:
sl_domain: SLDomain = SLDomain.get_by(domain=default_domain)
if sl_domain:
if sl_domain.premium_only and not current_user.is_premium(
):
flash("You cannot use this domain", "error")
return redirect(url_for("dashboard.setting"))
current_user.default_alias_public_domain_id = sl_domain.id
current_user.default_alias_custom_domain_id = None
else:
custom_domain = CustomDomain.get_by(domain=default_domain)
if custom_domain:
# sanity check
if (custom_domain.user_id != current_user.id
or not custom_domain.verified):
LOG.exception("%s cannot use domain %s",
current_user, default_domain)
else:
current_user.default_alias_custom_domain_id = (
custom_domain.id)
current_user.default_alias_public_domain_id = None
else:
current_user.default_alias_custom_domain_id = None
current_user.default_alias_public_domain_id = None
db.session.commit()
flash("Your preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "change-sender-format":
sender_format = int(request.form.get("sender-format"))
if SenderFormatEnum.has_value(sender_format):
current_user.sender_format = sender_format
current_user.sender_format_updated_at = arrow.now()
db.session.commit()
flash("Your sender format preference has been updated",
"success")
db.session.commit()
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "replace-ra":
choose = request.form.get("replace-ra")
if choose == "on":
current_user.replace_reverse_alias = True
else:
current_user.replace_reverse_alias = False
db.session.commit()
flash("Your preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "sender-in-ra":
choose = request.form.get("enable")
if choose == "on":
current_user.include_sender_in_reverse_alias = True
else:
current_user.include_sender_in_reverse_alias = False
db.session.commit()
flash("Your preference has been updated", "success")
return redirect(url_for("dashboard.setting"))
elif request.form.get("form-name") == "export-data":
return redirect(url_for("api.export_data"))
elif request.form.get("form-name") == "export-alias":
return redirect(url_for("api.export_aliases"))
manual_sub = ManualSubscription.get_by(user_id=current_user.id)
apple_sub = AppleSubscription.get_by(user_id=current_user.id)
coinbase_sub = CoinbaseSubscription.get_by(user_id=current_user.id)
return render_template(
"dashboard/setting.html",
form=form,
PlanEnum=PlanEnum,
SenderFormatEnum=SenderFormatEnum,
promo_form=promo_form,
change_email_form=change_email_form,
pending_email=pending_email,
AliasGeneratorEnum=AliasGeneratorEnum,
manual_sub=manual_sub,
apple_sub=apple_sub,
coinbase_sub=coinbase_sub,
FIRST_ALIAS_DOMAIN=FIRST_ALIAS_DOMAIN,
)
def alias_contact_manager(alias_id):
highlight_contact_id = None
if request.args.get("highlight_contact_id"):
highlight_contact_id = int(request.args.get("highlight_contact_id"))
alias = Alias.get(alias_id)
page = 0
if request.args.get("page"):
page = int(request.args.get("page"))
query = request.args.get("query") or ""
# sanity check
if not alias:
flash("You do not have access to this page", "warning")
return redirect(url_for("dashboard.index"))
if alias.user_id != current_user.id:
flash("You do not have access to this page", "warning")
return redirect(url_for("dashboard.index"))
new_contact_form = NewContactForm()
if request.method == "POST":
if request.form.get("form-name") == "create":
if new_contact_form.validate():
contact_addr = new_contact_form.email.data.strip()
try:
contact_name, contact_email = parseaddr_unicode(
contact_addr)
contact_email = sanitize_email(contact_email)
except Exception:
flash(f"{contact_addr} is invalid", "error")
return redirect(
url_for(
"dashboard.alias_contact_manager",
alias_id=alias_id,
))
if not is_valid_email(contact_email):
flash(f"{contact_email} is invalid", "error")
return redirect(
url_for(
"dashboard.alias_contact_manager",
alias_id=alias_id,
))
contact = Contact.get_by(alias_id=alias.id,
website_email=contact_email)
# already been added
if contact:
flash(f"{contact_email} is already added", "error")
return redirect(
url_for(
"dashboard.alias_contact_manager",
alias_id=alias_id,
highlight_contact_id=contact.id,
))
contact = Contact.create(
user_id=alias.user_id,
alias_id=alias.id,
website_email=contact_email,
name=contact_name,
reply_email=generate_reply_email(contact_email,
current_user),
)
LOG.d("create reverse-alias for %s", contact_addr)
db.session.commit()
flash(f"Reverse alias for {contact_addr} is created",
"success")
return redirect(
url_for(
"dashboard.alias_contact_manager",
alias_id=alias_id,
highlight_contact_id=contact.id,
))
elif request.form.get("form-name") == "delete":
contact_id = request.form.get("contact-id")
contact = Contact.get(contact_id)
if not contact:
flash("Unknown error. Refresh the page", "warning")
return redirect(
url_for("dashboard.alias_contact_manager",
alias_id=alias_id))
elif contact.alias_id != alias.id:
flash("You cannot delete reverse-alias", "warning")
return redirect(
url_for("dashboard.alias_contact_manager",
alias_id=alias_id))
delete_contact_email = contact.website_email
Contact.delete(contact_id)
db.session.commit()
flash(f"Reverse-alias for {delete_contact_email} has been deleted",
"success")
return redirect(
url_for("dashboard.alias_contact_manager", alias_id=alias_id))
elif request.form.get("form-name") == "search":
query = request.form.get("query")
return redirect(
url_for(
"dashboard.alias_contact_manager",
alias_id=alias_id,
query=query,
highlight_contact_id=highlight_contact_id,
))
contact_infos = get_contact_infos(alias, page, query=query)
last_page = len(contact_infos) < PAGE_LIMIT
# if highlighted contact isn't included, fetch it
# make sure highlighted contact is at array start
contact_ids = [contact_info.contact.id for contact_info in contact_infos]
if highlight_contact_id and highlight_contact_id not in contact_ids:
contact_infos = (get_contact_infos(
alias, contact_id=highlight_contact_id, query=query) +
contact_infos)
return render_template(
"dashboard/alias_contact_manager.html",
contact_infos=contact_infos,
alias=alias,
new_contact_form=new_contact_form,
highlight_contact_id=highlight_contact_id,
page=page,
last_page=last_page,
query=query,
)
def register():
if current_user.is_authenticated:
LOG.d("user is already authenticated, redirect to dashboard")
flash("You are already logged in", "warning")
return redirect(url_for("dashboard.index"))
if config.DISABLE_REGISTRATION:
flash("Registration is closed", "error")
return redirect(url_for("auth.login"))
form = RegisterForm(request.form)
next_url = request.args.get("next")
if form.validate_on_submit():
# only check if hcaptcha is enabled
if HCAPTCHA_SECRET:
# check with hCaptcha
token = request.form.get("h-captcha-response")
params = {"secret": HCAPTCHA_SECRET, "response": token}
hcaptcha_res = requests.post("https://hcaptcha.com/siteverify",
data=params).json()
# return something like
# {'success': True,
# 'challenge_ts': '2020-07-23T10:03:25',
# 'hostname': '127.0.0.1'}
if not hcaptcha_res["success"]:
LOG.warning(
"User put wrong captcha %s %s",
form.email.data,
hcaptcha_res,
)
flash("Wrong Captcha", "error")
return render_template(
"auth/register.html",
form=form,
next_url=next_url,
HCAPTCHA_SITEKEY=HCAPTCHA_SITEKEY,
)
email = sanitize_email(form.email.data)
if not email_can_be_used_as_mailbox(email):
flash("You cannot use this email address as your personal inbox.",
"error")
else:
if personal_email_already_used(email):
flash(f"Email {email} already used", "error")
else:
LOG.debug("create user %s", email)
user = User.create(
email=email,
name="",
password=form.password.data,
referral=get_referral(),
)
db.session.commit()
try:
send_activation_email(user, next_url)
except Exception:
flash("Invalid email, are you sure the email is correct?",
"error")
return redirect(url_for("auth.register"))
return render_template("auth/register_waiting_activation.html")
return render_template(
"auth/register.html",
form=form,
next_url=next_url,
HCAPTCHA_SITEKEY=HCAPTCHA_SITEKEY,
)
def send_email(
to_email,
subject,
plaintext,
html=None,
unsubscribe_link=None,
unsubscribe_via_email=False,
):
to_email = sanitize_email(to_email)
if NOT_SEND_EMAIL:
LOG.d(
"send email with subject '%s' to '%s', plaintext: %s",
subject,
to_email,
plaintext,
)
return
LOG.d("send email to %s, subject %s", to_email, subject)
if POSTFIX_SUBMISSION_TLS:
smtp = SMTP(POSTFIX_SERVER, 587)
smtp.starttls()
else:
smtp = SMTP(POSTFIX_SERVER, POSTFIX_PORT or 25)
msg = MIMEMultipart("alternative")
msg.attach(MIMEText(plaintext))
if not html:
LOG.d("Use plaintext as html")
html = plaintext.replace("\n", "<br>")
msg.attach(MIMEText(html, "html"))
msg["Subject"] = subject
msg["From"] = f"{SUPPORT_NAME} <{SUPPORT_EMAIL}>"
msg["To"] = to_email
msg_id_header = make_msgid()
msg["Message-ID"] = msg_id_header
date_header = formatdate()
msg["Date"] = date_header
if unsubscribe_link:
add_or_replace_header(msg, "List-Unsubscribe", f"<{unsubscribe_link}>")
if not unsubscribe_via_email:
add_or_replace_header(
msg, "List-Unsubscribe-Post", "List-Unsubscribe=One-Click"
)
# add DKIM
email_domain = SUPPORT_EMAIL[SUPPORT_EMAIL.find("@") + 1 :]
add_dkim_signature(msg, email_domain)
msg_raw = to_bytes(msg)
transaction = TransactionalEmail.get_by(email=to_email)
if not transaction:
transaction = TransactionalEmail.create(email=to_email, commit=True)
# use a different envelope sender for each transactional email (aka VERP)
smtp.sendmail(TRANSACTIONAL_BOUNCE_EMAIL.format(transaction.id), to_email, msg_raw)