Mozilla VPN is currently experiencing an outage. Our team is actively working to resolve the issue. Please check the status page for real-time updates. Thank you for your patience.

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

safely reducing the size of my Thunderbird folder

  • 2 replies
  • 0 have this problem
  • Last reply by sfhowes

more options

The size of the Thunderbird folder on my Windows 7 PC [C:\Users\ronbar\AppData\Roaming\Thunderbird] increases daily. A side effect of this is to increase the size of my daily backup application. I have found if/after I update Thunderbird to its current version, the size of the Thunderbird folder is reduced.. Is there any way to safely reduce the size of my Thunderbird folder [e.g. by deleting files or folders in the Thunderbird folder] without needing to update Thunderbird? If yes, then please advise how to do that. Thank you, Ron [ronbar@gmail.com]

The size of the Thunderbird folder on my Windows 7 PC [C:\Users\ronbar\AppData\Roaming\Thunderbird] increases daily. A side effect of this is to increase the size of my daily backup application. I have found if/after I update Thunderbird to its current version, the size of the Thunderbird folder is reduced.. Is there any way to safely reduce the size of my Thunderbird folder [e.g. by deleting files or folders in the Thunderbird folder] without needing to update Thunderbird? If yes, then please advise how to do that. Thank you, Ron [ronbar@gmail.com]

All Replies (2)

more options

Periodically compacting folders usually helps. I also suggest viewing the profile with windows file explorer can detect if there are issues that reflect in increased profile size (such as duplicate account folders or NSTMP files that can be deleted).

Helpful?

more options

If you have gmail accounts in TB, unsubscribe All Mail and delete the associated mbox file.

All Mail section

If you're satisfied to store mail on the IMAP server, downloading headers only will lead to a significant storage saving.

Helpful?

Ask a question

You must log in to your account to reply to posts. Please start a new question, if you do not have an account yet.