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What Thunderbird files do I need to back up in order to restore emails later?

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gf1701
gf1701
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I've been using Windows 10 File History as my backup tool and have decided to move on to a 3rd-party backup solution, either Acronis or Backup4All, where I will use an incremental backup scheme. I’m not sure what Thunderbird files I need to back up in order to be able to restore old copies if needed. Windows File History makes copies of every single Thunderbird profile file every time I send or receive e-mail, including many files that are empty (e.g., AlternateServices, parent, SecurityPreload State), and those that seem to have no bearing on the content of e-mails (e.g., permissions, search.json, sessionCheckpoints, Telemetry.ShutdownTime). They don’t add up to a lot of space, but they do add up. So I’d like to know what files I actually need to back up so that I am able to later import or restore (I haven’t had to do so yet, so I don’t know the process) old e-mail copies. Thanks.

I've been using Windows 10 File History as my backup tool and have decided to move on to a 3rd-party backup solution, either Acronis or Backup4All, where I will use an incremental backup scheme. I’m not sure what Thunderbird files I need to back up in order to be able to restore old copies if needed. Windows File History makes copies of every single Thunderbird profile file every time I send or receive e-mail, including many files that are empty (e.g., AlternateServices, parent, SecurityPreload State), and those that seem to have no bearing on the content of e-mails (e.g., permissions, search.json, sessionCheckpoints, Telemetry.ShutdownTime). They don’t add up to a lot of space, but they do add up. So I’d like to know what files I actually need to back up so that I am able to later import or restore (I haven’t had to do so yet, so I don’t know the process) old e-mail copies. Thanks.

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Matt
Matt
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Given Thunderbird profile including mail is a single organism, trying to back up a part of it is a bit like backing up your legs, but not your head. All the parts work together.

Are you using IMAP mail accounts? in which case mail backup is a moot point as it is synchronised to the server?

If you use synchronized calendars and contacts along with IMAP local backups offer little.

gf1701
gf1701 Utente che ha posto la domanda
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I use IMAP, and it's a gmail account, but I keep local copies of all folders on my computer. I have no idea what is accessible via gmail, and for how long, or how to access anything that I can't see on gmail.com. So backups of my local files are more important to me than leaving my fate it in Google's hands. So this is not a moot point for me. I would appreciate it if someone could provide an answer to my question.