App keeps crashing

Hi Michelle

Is suspect your using the desktop version of Thunderbird. This forum is for the Android mobile app. You'll receive a greater response and platform specific help by posting in the desktop forum below.

https://support.mozilla.org/en-US/questions/thunderbird

No, we have no running computer. I am using the Android app on my Android phone, A Samsung Galaxy S25 Ultra.

Note that I uninstalled and reinstalled the app. While it's doing better, it, like the first time, won't display the selected number of emails at a time. The first time, I selected to view 1,000 at a time. It didn't do that. On average it might be 250. At the reinstall, I chose 500. It's never displayed 500, because when I select all, it shows me. But in one instance it showed 9,000+. So something is awry with that lol. I go to the inbox, select all, then select to delete (all). It seems to. I then learned to go to the trash folder, select all, then tell it to delete all. Back and forth.

Hi Michelle

Thanks for confirming you're using the mobile app.

The mobile app is not well suited to your task of deleting 265,000 emails.

The app's performance significantly deteriorates when the local folder size is set to 500 or greater, potentially even crashing if memory gets exhausted. See developer comments on github here and here.

Doing the cleanup using your provider's webmail or a desktop email client would be a better option.