def send_email(to, subject, template, **kwargs): app = current_app._get_current_object() msg = Message(app.config['FLASKY_MAIL_SUBJECT_PREFIX'] + ' ' + subject, sender=app.config['FLASKY_MAIL_SENDER'], recipients=[to]) msg.body = render_template(template + '.txt', **kwargs) msg.html = render_template(template + '.html', **kwargs) msg.IsBodyHtml = True thr = Thread(target=send_async_email, args=[app, msg]) thr.start() return thr