At this point, there’s no guarantee that the ImapMail folder contains a copy of both messages #1 and #2 because IMAP is an on-demand protocol. You launch Thunderbird, go to the inbox, and click on message #1, ignoring message #2. And for many users, backing it up could lead to a false impression that all of their mail is safe because the folder is basically only a temporary cache.įor example, let’s pretend that you have exactly two messages in your Gmail inbox. Generally speaking, although there’s no harm in backing up the ImapMail folder, it isn’t necessary. Won’t they lose all the images and rest of attachments? there’s no remote server – mails are moved by hand ). My concern would be: what if there are accounts stored in Thunderbird just for history/archival purposes (eg. Would you lose any functionality by excluding it? Is %profile%\AppData\Roaming\Thunderbird\Profiles\fault\ImapMail My question is to the people who use Thunderbird: I have this issue in duplicacy utils related to the filters file. If you use all mail as archive then you should back up this folder, and in this case you may actually have a backup size problem because it is a large and constantly changing MBOX file. I also understand that the way people organize email messages varies greatly. My inbox has only pending issues that I have to resolve or respond to. And I usually move messages from current projects to their respective folders (synchronized by IMAP). Really “cold” messages I move to the local folders folder. I’d rather not use all mail folder as archive. So the all mail folder is just a large MBOX file with copies of the messages, and in my case it is not necessary to back it up. A message that you move to the Project A folder will have Project A label and will have two copies in Thunderbird, one in the Project A folder and the other in the all mail folder. A message with inbox label has two copies in Thunderbird, one in inbox and another in all mail folder. Thunderbird translates Gmail labels as folders (thus generating duplicity / copies). All messages that you received or placed in a folder are also in all mail. The all mail folder in Gmail is where messages that have no labels remain. The real Thunderbird cache is in Data/profile/cache2/.Īnd finally, about the “only local” files, they are not in the imapmail folder, but in the local folders folder (which is also inside the profile folder), and obviously must be backed up. I don’t think it’s a cache, it’s a local version of your emails. The user in GitHub post called the folder as “local imap cache”. # = CACHE FOLDER AND ALL ITS FILES AND SUB-FOLDERS My filters are like this (note that I configure one version in English and another in my language, Portuguese, just in case): #= "UNWANTED" FILES = Some email files (Google specific) can also be excluded and don’t need to be restored:Īnd obviously you don’t need the backup of: They are recreated by Thunderbird itself. However, some elements can be excluded: the index files and the database. Consider that: what if, for some disaster, Google excludes the account? What if a hacker discovers (using another way, like phishing, etc.) your password, download your e-mails and delete them? Not everyone has two-factor authentication enabled.Īnother point: it is perfectly comfortable to do daily backups of the folder (I back up the entire profile folder), remember that they are just text files. Just think of the “3” from the 3-2-1 principle of backups, you should have 3 copies: one on Google, one on my machine and the third … on Duplicacy backup. If you really want to have a backup of your emails, you can not ignore the imapmail folder. I use Thunderbird with Gmail (G Suite), some considerations:
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