Thunderbird Community Forum

seem to have a problem with OAuth2 and my aol accounts in thunderbird. can't send or receive emails to/from my aol account on thunderbird. this seems to have something to do with change to OAuth2.

When I search for a name in Thunderbird mail e.g Lennart, nothing from 2026 comes up, only older mails from 2025-12-31 and backwards. if I search on his e-mailadress, e.g l.name@ppost.se it finds avery mail. What is wrong?

For some time now my primary email address gets wiped clean every night and is empty every morning. I have to transfer received mail to another input address to keep it safe!

I send out golf group e-mails. I have myself (e-mail address) in the group, so it will also come back to me. The server keeps rejecting my group e-mails because it says my e-mail address is incorrect, I have checked it several times and it is correct. I even edited it to be sure. Why is the server still rejecting it?

Thanks for your time....Paul Smart psmart@triad.rr.com

Hello,

for some reasons I need to downgrade a TB installation (Mac silicon 148.0.1) to the ESR channel, 140.8.1esr for Mac silicon.

I read articles in the KB where Mozilla discourages this, but I would avoid to move 15Gb circa of emails by hand copying and pasting them...

So is there anyone that has tried this before? Any suggestion how to do it without loosing e-mail in th process?

Thanks fr your support.

Hi. I access a gmail account via Thunderbird. It's generally quite efficient, but recently it has become very sluggish. I have pretty fast internet, wired at 1G, so usually my mail appears almost immediately. In the last week or so it has slowed down dramatically, sometimes requiring multiple login attempts. Any idea what's going on? Thanks. Steve

I can receive mail fine. Cannot send mail on gmx.co.uk acct, but gmx.net works on oauth2. But oauth2 is missing on gmx.co.uk It's just not on the pulldown. I tried a new thunderbird acct for gmx.co.uk but oauth2 is still missing.

For some reason I have lost all old emails in my inbox. I am only getting new messages, but I have many Thats I leaving in my inbox to address later. Please help me to recover them. This hspppen on or about a March 4, 2026

Since the firefox upgrade of March 4, 2026, I have lost all of my old emails in my inbox. These are important items I need to work on before I complete and file away. I need to gain access to them ASAP. Thank you.

When I try retrieving my email from my AOL account (IMAP) using Thunderbird and Windows 11 I get the message "Authentication failure while connecting to server imap.aol.com." This account was working fine for months until the T-bird update. I have several other accounts on T-Bird, including Gmail and others, and they're still working just fine.

I have double-checked all the account settings and tried deleting the AOL account from T-Bird and setting it up again from scratch, but the problem persists.

Please help!

Many thanks.

My friend Ken has been using Thunderbird successfully for a long time. in the last 2 weeks, yahoo popups have shown up that prevent Thunderbird email usage. How do we get rid of them?

I would like to know how I can control the timing of compacting the mailboxes under Linux and Windows. The reason why I ask is that every time compacting needs to be done, the prompt to do so comes up as soon as the Thunderbird interface finishes loading but before all of the mailboxes are finished updating,which can take several minutes. If I accept the compacting, it inevitably returns an error that it could not run because the mailboxes are still updating. Or I can cancel until I go through this the next time.

It would seem like a simple matter to either give the user a way to delay the compacting process, or have Thunderbird not initiate it until it is safe to do so to begin with.

I have tried to research this but have not found any answers.

I find TB spam filtering pretty weak. As one example, the same spam email can come in multiple times, be marked as spam each time, yet never be caught by TB. I'm running behind - currently using release 115.18.0 - I have had no reason to upgrade until now. My question: If I update is spam filtering improved?? thx,

Currently my Thunderbird 'Sent' mailbox is only holding emails back to the beginning of 2025. However on previous PC's my Sent mail went farther back, but not I think to the beginning of when I bought the PC. I do backup my PC with some regularity but I am wondering whether there is a limit to how far back Thunderbird saves messages. I've been using Thunderbird for about 20 years and wonder whether I can retrieve some of my great emails :)

The Subject line shows 'Invoice from XYZ' but the correspndents line show ABC. Both of these suppliers use Netsuite. This also happens with other emails from other Netsuite users.