I would like to copy all Filter Rules in Message Filters window from one account to another.


Is it possible?

1 Answer 1


I found solution:

  1. Close Thunderbird.

  2. Go to directory: C:\Users\<username>\AppData\Roaming\Thunderbird\Profiles\<profile>\ImapMail\<mailserver>\msgFilterRules.dat

  3. Copy msgFilterRules.dat to another mailserver or edit or do whatever you want.

  4. Run Thunderbird.

  5. Enjoy!

Source: https://raymii.org/s/tutorials/Thunderbird_Back_Up_Mail__Message_Filters.html

  • If you are trying to switch from POP to IMAP (like me), the POP account message filter rules are in Profiles\<profile>\Mail\<mailserver> but they can be copied over to an account living in the ImapMail folder without any issue.
    – evilspoons
    Oct 10, 2021 at 20:39

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