This script should download message labels from gmail and apply them on local copy of that messages (made with getmail or other software) as header in messages.

Idea is really simple:

1. prepare index "Message-ID header" => "message file"
2. save index in $MAILDIR/gmail-sync-labels.index
3. Download (message-id, labels) pairs from gmail
4. Apply labels on message with message-id

before: make backup of your Maildir. It works for me, but it may destroy mails for you. It was tested with python 3.3, it may or may not work with older releases. Feel free to post patches / pull requests / issues about older versions.

cp config.py.template config_named.py
edit config_named.py
python3 gmail-sync-labels.py config_named

The restorer currently works by copying from one gmail account to another, keying by message ID. Note that this tool is not well tested.

cp config.py.template config_old.py
cp config.py.template config_new.py
edit config_old.py config_new.py
python3 gmail-restore-labels.py config_old config_new

1. gmail-notmuch
   This project used to have NotMuch support, but it was removed for lack of maintenance.

• https://github.com/hiciu/gmail-sync-labels
• https://github.com/fastcat/gmail-sync-labels