Can I get some suggestions on how people are doing backups of their email? I am using IMAP, google specifically, for domains, not just a plain email address, but there are those to consider as well.
I am looking for some sort of IMAP rsync type system, but since google has a strange way of interpreting an RFC and is using labels/tags as folders, and how a message can show up in x places, not just one, forces me to look at scripting this as a large code base that can basically be a small IMAP MTA that saves files in a directory based system that is comparable with say "dovecot" or whatever other IMAP MTA/IMAP store there is that is using a open format that won't bite me 20 years from now.
What is your IMAP backup solution?