your notmuch database (mail and tags) across machines
* [lieer](https://github.com/gauteh/lieer) - Fast email-fetching and two-way tag
- synchronization between notmuch and GMail (formerly known as gmailieer)
+ synchronization between notmuch and GMail (Note that lieer was formerly known
+ as gmailieer.)
See more exhaustive list of [[software]] notmuch works with and the
[[initial_tagging]] page for more info on initial tagging of messages.