imap-backup VS imapbackup

Personally, I use https://github.com/joeyates/imap-backup to archive all my emails and then only keep them on the remote server for as long as I need to (basically until I read them and respond or download an attachment into https://docs.paperless-ngx.com )

I use imap-backup to backup my MailCow email boxes.

You'd need an IMAP backup tool. For example: https://github.com/joeyates/imap-backup . Add it to cron if you want it to backup periodically.

Here's a bad idea that may work. https://github.com/joeyates/imap-backup. I used something like this when we migrated from ridiculous email system to exchange. However the clock is ticking on this option as it doesn't support modern authentication.

Imap-backup: Backup Gmail or other IMAP accounts to disk\ (44 comments)

In terms of backup you could do incremental backups, example here in python - not tested by me personally but seems good.

If you want it totally DIY https://github.com/rcarmo/imapbackup and then any flat text search.

Check this out, you can use it with bridge https://github.com/rcarmo/imapbackup

If you have access to the server you could make backups on that end (that is what we where doing) if you dont have access to the server you would need to login to each mailbox to create the backup i suppose. Dont know which tools are good for that but i found this one it might help: https://github.com/rcarmo/imapbackup

There are loads of imap backup options from a quick search, such as https://github.com/rcarmo/imapbackup