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

nstmp files in Thunderbird - what do they do, and how can I delete them?

  • 1 reply
  • 2 have this problem
  • 23 views
  • Last reply by david

more options

Hello I have nstmp files in my Thunderbird account that are holding huge amount of emails. I think this is slowing down my computers overall operating speed. What function do these files serve, and how can I delete these files? Thank you

Hello I have nstmp files in my Thunderbird account that are holding huge amount of emails. I think this is slowing down my computers overall operating speed. What function do these files serve, and how can I delete these files? Thank you

All Replies (1)

more options

These happen sometimes with compacting is interrupted. You can delete them.