I presume you are using IMAP. Every x minutes, thunderbird saves a draft. when message is sent, thunderbird deletes its draft, but the IMAP folder retails all of the saved drafts. To avoid that, set your drafts folder to local storage and problem eliminated.

Will Thunderbird still save it until sent?

The problem only started about a week ago. Very strange.

I have no idea how to set my drafts folder to local storage.

The problem is that Thunderbird does not delete the draft. There is nothing in the local folder. Thunderbird won't let me delete them, as they show up immediately after it looks like they were deleted.

I have 4 email addresses and this is the only one in which it is happening.

First, it does delete the draft, but there is often more than one. To set to draft, do this: - click to account settings' - for your account, click 'copies&folders' - there click the option to save drafts to local folders

Thanks for your help. I do appreciate your time.

One more question~~~ Where do I move the drafts that still show? There are a lot.

Should the drafts that are still in the folder just be sent to trash to get rid of them?

I would simply highlight and delete. Trash will get rid of them for you. And... there are no bad questions. I am glad to assist.

The problem is that they won't delete.