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Using Thunderbird on Linux I cannot delete any local folders, when I try to delete them I get more copies of the folders on reopening Thunderbird, after the system says it is "not responding" and I close it down. I have tried several times and now have multiple copies of the local folders I've tried to delete.

I am trying to do a mass mailing in Thunderbird to about 2015 libraries, with another one to come. I followed all the instructions carefully and generated all the messages and they went into my outbox, with a "send later" command. Then this morning I entered the command to empty the outbox. I immediately began getting an error message that I could only send 50 messages an hour. Feeling like the sorcerer's apprentice, I closed thunderbird, whcih stopped the bleeding. Now I have 1350 messages in the outbox which thunderbird did not try to send.

Fixing up this mess is going to be complicated, particularly with respect to the messages it did try and fail to send (about 750 of them.) But I could make some real progress if I could figure out how to send 50 of the unset messages at a time from the outbox. I have the first 50 out of the 1350 selected right now, but I can't figure out how to get them sent. HELP! Thanks in advance.

I know i have asked this already but i did not receive an answer of a solution and id really like someone to help me with this. It is a duplicate question but again no answer and id really like one . i want to remove it please do not tell me toget a new profile and lose everything i have. there has to be another way

Periodically I am unable to delete emails. I usually just highlight the email, then click the delete button. When that stops working, sometimes I can use the Edit menu and delete the email that way. Other times I cannot delete. If I come back later, I can usually delete again. How can this be fixed? Thank you.

I am a very long-time Thunderbird user. I store my e-mails in many folders, and in all folders I have the unread highlighted. In my primary, very large inbox, the total number and the number of unread messages are normally displayed, and in the message list, the unread are highlighted. I was using a filter for something else totally unrelated, and suddenly I began seeing only total e-mail number, and the unread are no longer highlighted. The unread are still highlighted in my other folders. Is there some way to get the unread messages in my primary inbox marked again? Otherwise I often don't know which to read. I'm talking about thousands of messages, not just a few! Thank you.

Whenever I open TB (115.10.1) new messages download. The problem is the newest message topic is in the Inbox list but it is hidden behind the column headings. I have to scroll the list down one message to see the newest message. Why is this?

I am using Thunderbird and have a Lnux Mint 21.2 Cinnamon operating system. Recently I started using Surfshark vpn, which has blocked the port 587, making it impossible to send e-mails. I have tried using ports 465 and 2525 but without sucess, and apparently it is not possible to set up a split tunnel for Thunderbird. Do you know of any way I can get around this problem?