then look for the folder in the trash

Thank you Matt. Dont find it in Trash

It seems you're using Thunderbird for macOS.

The default behavior is to ask for confirmation before moving to Trash.

Assuming this is an IMAP account, check under the configuration options for your account to see what happened to your deleted folder.

Unfortunately unless you had a local backup of such folder, you can't recover the date in a trivial and cost effective manner that wouldn't involved data recovery at your email provider.

Thank you Fabian. I will try to contact mozilla.

Do anyone know where to contact thunderbird support.

Hello there mariusbosch. We try To help you.

https://support.mozilla.org

Try this one for support. There is Ease- us.(optional)

For recovering files etc. There s a trail option to.

Thank you for using Firefox. Use A good anti- virus with it.

Greetings Firefox Volunteer

Mariusbosch said

Do anyone know where to contact thunderbird support.

You are in the Thunderbird support forum. This IS Thunderbird support.

Thank you Matt. Any other suggestions to find my missing folders?

Unfortunately, no.

Hi Marius, I can help you. Do you run any system backups? If so, we can help you restore a backup of the deleted folder.