Thunderbird: форум сообщества

"connection to server pop.mail.yahoo.com timed out" I have been getting this message in the activity manager for about a week now. When I click get messages, it says down loading message 1 of 1, but nothing happens.

After your upgrade I was unable to send messages. The incoming I was able to fix but the outgoing I could not fix. I have included the email message sent to me and I have included a picture of the outgoing STMP,

Hello All, all of a sudden I cannot send emails anymore. I do receive emails though. I have 4 accounts and none works. I went to account settings > outgoing ... all my accounts are set to SSL/TLS and below OAuth2. What goes into the Username field ... the email address or just my name? When I send a test email to myself the send window keeps going and going .. never sends BTW ... in Server Settings I have the same Authentication and Security as in Outgoing. Please help - I'm not getting anywhere. Also ... what goes into "Manage Identities"? ... just the specific email? or all four?

Thanks

After latest update Thunderbird cant send or receive emails. My settings are correct mail.charter.net port 993 outgoing mail.charter.net port 587.

Tells me I have a server error and is constantly asking for my password. HELP!!! I have been with Thunderbird since the beginning and have sent money to the cause, and now I need your help.

Thanks, Pam

All of the incoming messages are going to Trash. This includes messages I have not indicated as trash. I get no new messages to my inbox. Started today, 09/04/2026.

all INBOX emails disappeared from one of my email accounts. The other is working fine. Emails that were still open in one of the tabs are also now just an empty tab. --no luck repairing folder or deleting INBOX.msf. If I go to the Charter/Spectrum website the emails are still showing What should I try next?

Today is June 22nd 2026 , I was busy all weekend and I just checked my mail this morning , I noticed that the last email I got was Thursday June 18th 2026 , so I right clicked and clicked on "Get Messages" , suddenly I have about 40 emails , dating from the 19th to today , I have complained before about having issues with emails being a day or so late and was told that is when they were sent .... I am calling BS on that response and repeating my claim that something is WRONG with Thunderbird and how (or IF) it recieves emails , because there is no way that ALL the emails I normally get all decided at once to wait to send them to me till today (and I only got them because I clicked on Get Messages , otherwise I most likely still wouldn't have recieved any emails for several days from the date they were supposed to show up)

I can't be the only one with this issue , so hopefully someone has looked into this and come up with a actual FIX , , I have had this email program since Windows stopped Windows 10 Mail and honestly , since its been out for years prior to that , I would think it wouldn't still be buggy as it is , there are lots of features that are just combersome to use (like mass deleting emails by Name) all the way to just actually getting emails on time when they were actually sent (I have literally been on the phone with someone and they send me a email , and I don't get it for hours or sometimes days or sometimes not at all , and they are from people I have recieved emails from before and are part of my address book , so I should get them within minutes at most , not days or never ...

I am about ready to go find something else that is relaiable (and looks better , as I can't even add one of my pictures as a Background , and Light/Dark mode sucks as far as looks goes unless you are some GOTH person or something) and actually user friendly (when I swtiched to this email program it was better than most of the others offered at the time , but honestly , it has never improved and has remained unfinished as far as I am concerned) , it says it "updates" all the time , but I have not noticed ANY improvements in Functionality or looks since I first downloaded it , and for as long as Thunderbird has been available , it should not still be in Beta form and actually function at least as well as Microsoft's outdated emails programs did , but as of this ongoing issue , it is still slow and clunky , it may or may not send you emails depending on the day , and is a pain to navigate things that should be easily accessible on the main page with a simple click , again I'm comparing it to Outlook Express which has been obsolete for years , and Windows 10 Mail because as old as they are , they functioned much better than this email ever has and look much better , at least they allowed personal pictures for a Background

If you don't have a actual FIX for this ongoing issue , then I think it's time for me to move on and find something that actually functions like a email program should , by actually being able to recieve emails faster than Pony Express , which was last used because it was too slow over 165 years ago

If you DO have a FIX for this ongoing issue of not recieving emails when they were actually sent (I complained about this exact issue back in January) , not days later , or being able to close Thunderbird and still get emails alerts (you know like Microsoft has for years , and as much as I dislike Microsoft and their policies and FORCED Feature Windows Updates that screw up everything , at least they had a decent and functional email program since Windows 95 through Windows 10 Mail , but all they offer now is Outlook and I don't do online emails , I want it on my Desktop , which is why I went to Thunderbird in the first place) , maybe since they discontinued theirs , you could just copy/paste everything from it and call it Thunderbird

At least then it would work like it should , and look better , and actually not have to just minimize it in the taskbar so you will know at some point that you got a email , or to make it automatically start when Windows does , so I don't have to manually open it every time I restart my PC , since I have yet to find a setting for that , or if it is there its most likely hidden behind 40 other things you need to open to get to it , even though most likely the email alert sound never happens , maybe 2 times a month if I'm lucky , and even if it is several days late , (like I said 40 different people/companies didn't suddenly decide to wait 3 or more days to all send their emails at once , and only after I clicked Get Messages , oh , by the way , they are EMAILS NOT MESSAGES , a Message is a Text or Chat , a Email is a Email , maybe that is the issue , it doesn't know what its looking for)

As mentioned this has been a ongoing issue that I have complained about before , with no solution , and that no one here seems to want to address or actually FIX or even let me know they are working on a solution (which it seems like no one is) , so I'm tired of complaining to deaf ears , Helen Keller would have figured out what is wrong by now and she is Deaf , Blind and Dead ... When I am expecting a email from a Doctor that has info on a test or something , I need it when they send it , not days later or never .... I keep missing important emails because this program is and has been iffy at best since I have had it ...

I understand that the majority of the Staff for Thunderbird is Volunteers , but it just seems like no one cares what users experience and just brush it off and forget about it , and that is the issue I am and have been feeling with Support .... Not trying to be a jerk , I'm just frustrated with the lack of concern with how this program has and still does function

Thanks ..... Jim

I am assisting an elderly user with a personal @hotmail.com account that receives email successfully in Thunderbird but cannot send. I have confirmed they can send and receive emails from their online outlook.com portal. The user's computer setup is as follows:

• Windows 11 (with latest updates).
• Thunderbird 153.0.2 (64-bit).
• A personal @hotmail.com account with the following server configurations:

  -> Incoming IMAP: outlook.office365.com, port 993, SSL/TLS, OAuth2, and
  -> Outgoing SMTP: smtp-mail.outlook.com, port 587, STARTTLS, OAuth2.

Thunderbird successfully authenticates to Microsoft using OAuth2 for incoming email. However, when Thunderbird attempts outgoing email authentication, Microsoft's SMTP server rejects the authentication. The Error Console in Thunderbird records this message: "535 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox."

-> Refer to attached image: "Thunderbird Error Console_20260811.jpg". -> I am able to provide a short screen recording demonstrating the failure if needed.

To try and resolve the above, I completed the following actions:

1. Confirmed Thunderbird is current (153.0.2).
2. Confirmed SMTP is configured for OAuth2 rather than Normal Password.
3. Confirmed port 587 and STARTTLS.
4. Re-authorised the Microsoft account/OAuth connection.
5. Confirmed IMAP OAuth2 works.
6. Confirmed Outlook.com webmail can send successfully.
7. Reviewed Mozilla's current “Microsoft OAuth Authentication and Thunderbird in 2026” guidance, including the section covering cases where IMAP/POP works but SMTP does not.
8. Captured the SMTP failure in Thunderbird's Error Console.

However nothing worked, so I raised the matter with Microsoft support and eventually had the matter referred to their Tier 2 team. The Microsoft case number is: 7107041963.

Microsoft Support confirmed that for a personal Outlook.com/Hotmail account there is no user-accessible mailbox-level SMTP AUTH setting, and advised that SMTP is enabled by default for supported clients. However, because sending from Outlook.com webmail works, Microsoft Tier 2 declined to investigate the SMTP server response further and directed me to Thunderbird support.

I am able to provide a copy of the chat transcript if needed.

In any event, the TLDR version IMAP works using OAuth2, but SMTP using OAuth2 fails because Microsoft's SMTP server reports SmtpClientAuthentication is disabled for the Mailbox. Microsoft Tier 2 has referred the issue to Thunderbird support.

Questions:

1. Is this a known current issue affecting personal Outlook.com/Hotmail accounts using Thunderbird?
2. Is 535 5.7.139 SmtpClientAuthentication is disabled for the Mailbox known to occur with Thunderbird OAuth2 even though IMAP OAuth2 succeeds?
3. Is there a current Thunderbird-side workaround or alternative SMTP server/configuration recommended for personal Hotmail accounts?
4. Would changing the SMTP server from smtp-mail.outlook.com to smtp.office365.com be appropriate for a personal Hotmail account in Thunderbird 153, or should the current Microsoft-documented server be retained?

-> I note there appears to be conflicting advice on this point in previous support threads.

1. Given that IMAP OAuth2 authentication succeeds for the same Microsoft account, does this indicate that Thunderbird's Microsoft OAuth authorisation itself is functioning correctly, or could SMTP require a separate permission/token that may be failing?
2. Are there any additional Thunderbird logs or diagnostics I can provide that would help resolve this matter?

Disclosure: I used ChatGPT to help organise my troubleshooting notes and technical details for this post. The troubleshooting, observations and diagnostic information described above are from my own work on the affected PC.

Hello,

I have been using Thunderbird for years without issue, but three days ago, I started having issues.

Now, I don't receive emails when I open Thunderbird. If I delete my password and re-sign in, I receive emails, but cannot send them. Trying to send an email makes Thunderbird ask me to sign in again.

I have two email accounts that I use with Thunderbird. Both accounts have this issue. I have this issue regardless of the network I'm in (work, cell hotspot, or home).

Things I have tried:

• Verified that my IMAP and SMTP settings match the guidance from email servers.
• Verified that my computer firewall is not blocking email.
• Tried connecting on different networks (so different ISPs)
• Deleted and re-entered passwords for each account

Here my current server configuration:

• Email 1 (@gmail.com)

 * Server Name: imap.gmail.com
 * Port: 993
 * Connection Security: SSL/TLS
 * Authentication Method: OAuth2

• Email 1 Outgoing Server:

 * Server Name: smpt.gmail.com
 * Port: 465
 * Authentication Method: OAuth2
 * Connection Security SSL/TLS

• Email 2 (@[university].edu)

 * Server Name: outlook.office365.com
 * Port: 993
 * Connection Security: SSL/TLS
 * Authentication Method: OAuth2

• Email 2 Outgoing Server:

 * Server Name: smtp.office365.com
 * Port: 587
 * Authentication Method: OAuth2
 * Connection Security SSL/TLS

I will greatly appreciate any help you can provide!

Thunderbird has always had a problem with filtering all incoming mail to the correct folders. Sometimes it does it correctly and sometimes it doesn't. But this morning it is dumping all my incoming mail into a folder that isn't the Incoming mail folder.

How do I get it to put the incoming mail in the Incoming folder?

For some reason all my emails contained in the inbox keep moving to the trash box by themselves. I have to manually move them back to the inbox. This includes read and unread messages. anyone know how to stop this? V 152.0 64 bit.

Thunderbird downloads new emails for all my emails except one. Has not downloaded on that one since July 3. Have reset various background settings to match other email accounts. Running on Windows 10. Suggestions?

Using the same settings as my main account: imap.gmail.com SSL/TLS 0Auth2 Tried copying in same local directory as one that is working. No idea what all these do...

Since 26 August I have not received any emails! I am able to go to my browser & see all my emails so I think fault must be with Thunderbird!

Help please..

Hello,

Everything working just fine last night. Wake up and Thunderbird will not retrieve emails.

Remembered this old message I got so I went through and deleted my second email address, didn't help.

https://support.mozilla.org/en-US/kb/thunderbird-and-yahoo

Checked all settings compared to Yahoo, still won't download messages. I can even send a message with my current settings no problem, and it does login, just won't retrieve emails. Gives me a connection timeout.

Anyone have any ideas?

TB is sending most of my email to the wrong folder. I had 21 message filters, but then I noticed that a lot of things were going to a folder named "bridge" for no apparent reason. I looked at the filter log, but there was nothing in the log for the last few months.

I did have a filter sending certain messages to the "bridge" folder, but TB is sending things there for no reason. I disabled all 21 message filters, and it is still doing it.

I have version 155.0 and I'm using Windows 11 25H2.

How can this be fixed?