On Wed, 16 Dec 2015 14:16:07 +0000
Simon Hobson <linux@???> wrote:

> Just make sure that you either keep backups of the local copy, or
> make sure the sync process won't delete stuff from the local copy.
> Otherwise, if the provider (or you, or you mail client) "gets it
> wrong" and your mail disappears from the server, then it'll also
> disappear from your locally synced copy as well.


Good advice :-) For mbsync the option "Sync Pull New" will restrict
syncing to downloading messages not yet seen by mbsync. Depending on
your IMAP folder structure and filtering strategy, the option "Create
Slave" can be useful as well.