Thunderbird Support Forum

Title. Thunderbird is a really cool client but it's pretty slow. I blame that on the thousands upon thousands of emails that my hotmail and gmail each hold. I don't necessarily want to delete these emails, but I have seldom a reason to have any email older than 2 months in my thunderbird client slowing and crashing the program whenever I want to combine inboxes.

To this end I went to "Synchronization & Storage" and told it to "Synchronize the most recent 2 months" but it didn't delete the huge cluster of older emails. The next option is to tell TB to delete these emails in the same menu but as I understand it that would also delete them in the server, which I don't want to do for posteriority.

What do I do?

This is the message I get when trying to send emails: "Sending of the message failed. An error occurred while sending mail. The mail server responded: pgbentley101@gmail.com recipient rejected. Please check the message recipient "pgbentley101@gmail.com" and try again."

The page layout and functionality has changed. I keep getting a message about imap! I have not made any changes to anything. It's just not working, i am very lost with it. Help please. John K-D

Hi, I use a old Thunderbird version (38) for Windows Serveur 2003 and I can't connect a Microsoft 365 account. He indicate " A error with login or password" (screenshot in attachment). My password is correct, because it is OK with an other computer with recent Windows and Thunderbird version. I think the problem is with OAuth. Do you have a solution ? Thank you for your support.

I am using version 115.3.3 just today I started having problems. My default Windows virus checker did not identify any issues and I ran malware bytes and it showed zero problems. the problem seemed to start at the point when I forwarded a 5mb file to a few friends. Since then, I have been unable to send anything. The system continues to crash. Most of the time I cannot see any information in pull down lists. I have tried rolling back to a week old restore point and it continues to have the probem. I have tried updating to 115.4.1 and it still has the problem. I have removed all of the automatic installed updates from the last two days and still have the problem..... HELP!

I am not sure I will see emails back from this help request, but I sure hope so:)

Get red error when i write email adresses manually in the To field. Only way to put in adresses is first create an entry in the adressbook and then from the adressbook add the emailadress to the email To fields. Thunderbird version 115.4.1 (64-bit)

Using version 115.3.3 vertical view, folder pane, message pane. running on a 4K monitor at almost full window size the combined inbox automatically scrolls when I am deleting messages and the messages I am working on move the top out of view. I then have to scroll back down to see the message. Then it will again auto scroll to the top out of view. This is making thunderbird useless as it is wasting my time scrolling endlessly to see my messages. How can I disable the scrolling on the inbox?

I need help to organize the folder structure that was messed up during update to Thunderbird 115. Most urgent is one inbox folder which is now found under the accounts folder and not in the general inbox folder with all the other inbox folders. I would like to beable to move this misplaced inbox folder to it's original place in the general inbox folder.

Also in this misplaced inbox folder, its has other folders in it: template, draft, sent etc. These folder should stay in the accounts folder.

I hope that a future update will clear the mess, and other solutions are welcome :-)

After updating Thunderbird, I can't see my email. There are no emails or even accounts, although there are messages in the program settings and messages are downloaded in the background.

When I create an email and attempt to insert a link, the message pane will freeze up. Been ongoing for several weeks now. It has forced me to use another client as we can not create any emails with links and that is critical. Version 120.ob1 32 bit Windows 10 PC (no changes made to anything prior to issue.

Hello, Can anyone help with server issues? I'm able to sign in and open Thunderbird but i can not receive or send any emails. It states my server is the issue but i attempted everything i saw online in regards to turning on and off my proxy and firewalls as well as checking the port was 587 for outgoing but its still not working can someone assist me in fixing this.

Thunderbird was working great until today... you "offered" me an upgrade to SuperNova 115 after which I am no longer receiving any incoming email. Does not even ask me for the password on startup as the old version did. I have checked the Windows Firewall and added Thunderbird.exe. I need help getting this to work or reverting back to previous version. Also, I recently lost a great deal of pop mail from the inbox and would like to know why - it was telling me I could not Compact the Inbox due to not enough space or not having permissions - neither of which should have been a problem. Please don't make me switch to Gmail!! Help......

I downloaded the new version of Thunderbird Mail, and now, I'm having continual trouble sending messages (but no trouble receiving them). A pop-up window keeps appearing requiring me to re-sign into my Microsoft account, for some reason, but whenever I press "continue" to sign in, nothing happens, and selecting "cancel" also has no effect. I'm already signed in to my Microsoft account on my laptop, anyway, so I don't know why this window keeps appearing, but I assume it's related to the fact that I'm having trouble sending e-mail. I have to keep closing the Thunderbird program and re-opening it every time I want to send new messages. This is becoming very tiresome. I've already tried closing and re-opening the Thunderbird program, but that doesn't fix the problem. I'm working on a Mac, with the latest iOS. All suggestions appreciated!

I select multiple files in File Explorer and select, right click, Send To, Thunderbird, but only one of the files actually appears in the Thunderbird email. It appears that which one shows up as an attachment to the email is quite random. This used to work fine with all the selected files showing in the email, I haven't upgraded anything so far as I know, and I don't think I have changed anything at all. Any ideas most welcome. Incidentally, if I select only one file to send then it works fine; if I select multiple files to send through Outlook, then that works fine. I just cannot send multiple files through Thunderbird. I am using Thunderbird version 115.4.1 (64 bit). I have looked at the issue on Microsoft pages and they are of the opinion that this is a Thunderbird issue, not a Windows one. Thank you for your help in advance. Cheers

Just about everything seems slower with 115 from sorting a large column, loading emails at startup, opening an email in a new window, etc. How can I troubleshoot this? thanks, todd