topic Re: SLOW Thunderbird Email Deletions in Discussions

SLOW Thunderbird Email Deletions

Seeburg2 — Sat, 10 Jan 2026 09:24:41 GMT

The new Thunderbird is so SLOW to delete messages. It used to be instant. Now it takes about 5 seconds per email, and deleting a bunch takes that amount of time PER EMAIL. Why is it so slow now? This is a giant step backwards. What was wrong with the old method?

Re: SLOW Thunderbird Email Deletions

adowdell50 — Wed, 05 Jun 2024 20:32:42 GMT

I did what Saramon said and the slow deletion problem was solved:

Saramon

Making moves

Options

‎04-30-2024 05:08 PM

For Windows Anti-Virus go

to:

Virus & Threat Protection Settings > Exclusions > Add or remove Exclusions

Add following folders: (Just adding the Local folder didn't work for me)

C:\Users\UserName\AppData\Local\Thunderbird\Profiles
C:\Users\UserName\AppData\Roaming\Thunderbird\Profiles

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Re: SLOW Thunderbird Email Deletions

wsm — Sat, 10 Jan 2026 09:24:00 GMT

To significantly speed up message deletion, us shift+delete, instead of just delete. This will skip the ability to undo the message deletion.

If you still have difficulty, please with speed please file a support request https://support.mozilla.org/en-US/questions/new/thunderbird