Thunderbird Community Forum

Hello, I recently bought a MacBook Air 2024 with G3 chip (Sonoma 14.6.1) and used Time Machine to transfer all the data from my previous Apple MacBook Air from 2015 (Mojave 10.14.6) to the new computer. This also transferred my Thunderbird profile folder. It has the extension .default and an 8-digit combination of letters and numbers in front of it. Since the old version of Thunderbird no longer ran on Sonoma, I installed Thunderbird 115.15.0 and then opened Thunderbird on the new MacBook Air. Since then, Thunderbird has been taking an extremely long time to open (much longer than on the old MacBook Air with Mojave. Yesterday I updated to 128.2.0esr, which didn't help either. I deleted a deactivated extension in the add-ons, so that there are now no extensions, only a few dictionaries that I deleted as a test, which also did not bring any improvement. Switching off the hardware acceleration, clearing the cache and changing the themes did not improve the situation either. With the themes, I can only switch between dark, light and system theme - automatically. I checked and made sure that Thunderbird actually loads the .default profile folder from my old computer as the active profile. However, Thunderbird has also automatically set up a second profile with the extension .default-release. Could this be causing the problem? My active profile folder has a size of 15.21 GB and the new .deault-release profile folder has 18.6 MB. Both profile folders are located in Library/Thunderbird/Profiles I am quite desperate and hope that someone can help me. Thank you very much!

I have been using TB (under Ubuntu) for years without problems. I am now on version 115.15.0. Suddenly today the performance of the UI is abysmal. Even selecting a different folder to view in the navigation pane can take over a minute to complete. The activity monitor is no help. It often shows that nothing is happening when I am waiting for the view to change from one folder to another. When it does show something, it is usually indexing an inbox, but I have 5 accounts with inboxes, so this is no help. How can I see which inbox is being indexed? Some posts say that there should be a pause button in the Activity Monitor for the indexing activity, but I don't see any such thing. Some posts recommend changing mailbox format from mbox to mdir, but they don't say how. Searches for "mdir" in Thunderbird's settings and in the support knowledge base support knowledge base came up empty. How can I restore Thunderbird's normal performance?

How to automatically backup Thunderbird profile on a schedule?

Here is what I did. Does anyone have a better way?

I use GoodSync like this: I installed GoodSync. I created a new Job in GoodSync to Backup Thunderbird profile to a location I chose. Then I set up a task in task scheduler I then put this in the Program Script of the Action tab: "C:\Program Files\Siber Systems\GoodSync\gsync.exe" Then I proceeded to set up a schedule to run GoodSync I run it each evening. It works very well.

Better suggestions are welcome.

Personal emails exhibit no problem. When I send emails to corporations via Thunderbird they do not now receive them. If I re-send them via Gmail, they do. Seems to me there must be some new elements added to Thunderbird that triggers corporate system screening rejection.

Been a long time Thunderbird user. This situation has just recently developed.

Is there a fix on my end?

Mike Hutchinson