Hello there We have read the message We try to help

If you use filters and add-ons. try disabling this.

Even better if you try to start the thunderbird software in trouble shoot mode.

check whether you can use these actions again in the inbox?

There are also other ways to solve this that I will get to in a moment. ​ Can you try to start up in trouble shoot modus ?

Will you then check whether there is a possibility to see how you can now use these subjects normally?

https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird

Greetings Firefox volunteer

Hello there

If the filters are enabled to send them directly to the trash and there is an important moment to read them, you can.

The subject you are writing about is clear.

This email will remain in the bin for a considerable period of time, just like you are using it now. Nothing is broken.

And it is then used to only read these emails in this bin.

And don't just read it in the inbox.

If the filters are removed from this one, it will cancel itself out.

https://support.mozilla.org/en-US/kb/organize-your-messages-using-filters

https://support.mozilla.org/en-US/kb/quick-filter-toolbar

Why the messages in the trashcan returns. It might be a bug.

Greetings Firefox volunteer.

Hello there

you can also have the synchronization of a backup from google turned on. Disable this if you want to delete messages directly from your Thunderbird software.

Whether this has any effect if your messages are deleted within the trash bin and return remains to be determined.

hopefully to have informed you more about your topic.

Greetings Firefox volunteer.