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how to speed up zhunderbird


Edit Thunderbird options under Preferences ? Advanced ? General tab, click on “Advanced options” button and set these values:

layers.acceleration.disabled = true

and

gfx.direct2d.disabled = false

and restart Thunderbird. If it is still slow, try the next options:

Disable AeroGlass

Disabling the AeroGlass interface makes the interface reacting much faster. Install the “NoGlass” Addon which is available in the Thunderbird addon repository.

Disable Folder Indexing

If you have folders with many emails inside, Indexing can slow down Thunderbird. Go To Preferences ? Advanced ? General tab and disable the Global search.

Antivirus scanning of the Email folders in the filesystem

A antivirus scanner can slow down Thunderbird as well. Configure your antivirus program to exclude the Thunderbird Mail folders from being scanned. Warning: this option should only be used when the email is scanned by a smtp proxy of the antivirus program for viruses before it is handed to Thunderbird.

Cleanup Thunderbird index files

Thunderbird creates a lot of index files. A cleanup of these files can speedup Thunderbird as well, especially if some of them are broken. There is a handy tool called ThunderFix to do that.


You can do no harm by deleting the file Inbox.msf. Files with that extension are "message summary files". They do not contain the actual email message data and will be rebuilt by Thunderbird when required.
although imap message headers will have to be dlded again