Thunderbird Community Forum

Перестали отправляться письма с почтового ящика gmail.com. Соединение с сервером исходящей почты не устанавливается. Разные порты и способы шифрования уже пробовал. помогите решить проблему. Спасибо.

Gmail not going to desktop account since 10/26/26. Going to phone account 2153848303. Phone acct is gmail and desktop email is BetterBird (Linux Mint). Mail had been syncing but stopped for unknown reason.

I've tried the recommended solution for this problem--changing the "security.tls.version,min" from 3 to 1 without luck.

I don't have a problem with Apple Mail on my iPhone.

When I try to access the web version from my Windows machine using Firefox I receive a message "serious security issue with webmail.dca.net. When I try it from a MAC, using Firefox I am able to access mail.

Thanks for any insight you can provide

Background: I have a Plusnet email account. Several months ago Plusnet passed their emails over to Greenby (but 'nothing will change'). At that point I was unable to log onto Greenby support. It seems my ID was not recognised so I couldn't reset my password. Last week our Plusnet router was replaced by an EE router in connection with telephone landlines being changed to internet-based. That prompted me finally to phone Greenby in order to sort out access to support. In the course of that, I got a new password. Current problem: I now find that I can't send emails from Thunderbird. I get the failure message 'Invalid login or password'. (Thunderbird is receiving emails OK.) I have had a long exchange with Greenby automated support, but so far (after 5 days) no sign of an actual human. I have been fiddling with authentication and server settings (following advice from the support bot), but it isn't clear to me whether the problem lies with either or both of those, or with something else. Meanwhile I am reduced to sending from webmail. Any suggestions please? (N.B. On attempting to send a mail I don't get prompted for a server ID and password, but at present my list of saved passwords has only a single entry for IMAP.)

Since yesterday , Thursday 29th October. Thunderbird has only been displaying the "Inbox" for my account, no emails are visible in it and all of the directories including the deleted emails directory and spam directory are absent. I have Windows 11 installed. I am using the IMAP server for incoming email and have checked that all the settings are correct. My account displays no incoming emails but can send emails. The directories are still absent when running Trouble shooter and the inbox is still empty. In the Account Settings - Server Settings I tested connection to the server and it said secure connection made - this worked for both outgoing and incoming servers. I have tried uninstalling and reinstalling Thunderbird but the issue persists. Although I do not change any settings the full set of directories will occasionally appear along with some emails and then seconds later disappear again. My email account is working fine on my phone and tablet using gmail.

I am getting error message with one of my email accounts: "Your message was sent but a copy was not place in your Sent folder due to network or file access errors." How do I rectify this? My email provider Ionos says this would be a Thunderbird issue rather than something at their end.

Chris Sackett

My two Optimum email accounts (POP3) stopped sending messages. See attached error message. They are still working on a different computer with the exact same settings and Thunderbird version (Windows 10 on both too). I also have Outlook and Gmail accounts all still sending fine. Sending from troubleshooting mode and clearing the startup cache didn't help. Any clues what I can try?

I followed the instructions in the aritcle on the search page and it still didn't work. I worked with Geek Squad. They completely did all kinds of different settings and they all failed. When I click the test button, it says it connects successfully.

It tells me to retry or update the password.

I am absolutley typing in the correct password.

When I open thunderbird, the inbox say "No Messages". I then go to "File" and then "Get new messages for" account. Some times it takes several tries before all my messages (New and Old) appear in my inbox. Also, each time I open Thunderbird, I have to reset my columns.

I need assistance with a persistent Microsoft 365 authentication problem in Thunderbird on Windows 11.

My business email is hosted through GoDaddy's Microsoft 365 service. Thunderbird repeatedly fails when attempting to send messages, displaying:

"Login to server smtp.office365.com with username [business email address] failed."

We have attempted to troubleshoot this problem on several occasions without achieving a reliable solution.

Previous troubleshooting has included checking SMTP settings, STARTTLS, OAuth2 authentication and investigating Microsoft Graph integration.

Our earlier investigation also indicated that SMTP AUTH may be disabled for the Microsoft 365 account.

The mailbox works through Microsoft Outlook, but having to remember to use Outlook separately creates a risk of missing time-sensitive business correspondence.

I would particularly appreciate assistance with the following:

1. Establishing a reliable, supported connection between Thunderbird and my GoDaddy-managed Microsoft 365 mailbox. 2. Determining whether Microsoft Graph integration can resolve this without enabling legacy SMTP authentication. 3. Identifying any known compatibility issues involving GoDaddy-managed Microsoft 365 accounts. 4. Providing specific diagnostic instructions so we can establish why authentication is failing rather than repeating unsuccessful configuration changes.

I can provide screenshots, Thunderbird version information and diagnostic logs with sensitive information removed.

I would be grateful for detailed technical guidance because repeated attempts to resolve this issue have been unsuccessful.

Since upgrading to a recent version of Thunderbird ESR (a few weeks ago), I regularly receive notifications of error for a Yahoo mail account. I do not receive these notifications for other mail accounts. The notifications are as follows:

• The current operation on 'inbox' did not succeed. The mail server for account example@yahoo.com responded: p.
• The current operation on 'inbox' did not succeed. The mail server for account example@yahoo.com responded: UID FETCH completed.

I have deleted and recreated the account to no avail. Searches for similar issues has revealed nothing of use.

Any idea what is going on?

Version: 153.5.1esr (64-bit) OS: Windows 10 Language: English Proxy: None Email connection type: IMAP Authentication: OAuth2 Connection security: SSL/TLS Encryption: None

Functioning normally until it wasn't 5 days ago. Can reach outgoing servers but nothing goes beyond. Initially received emails but at this point neither receiving nor sending. No changes on my end. It just started happening.

I have several email accounts with 1&1 (Germany). Up until now, they have worked perfectly via Thunderbird. As of this morning, however, it no longer accepts any of my passwords. If I try logging in via the 1&1 webmail interface instead, everything works fine.

i sometimes send email using gmail app on mobile devices. the gmail web application shows those sent messages with the gmail sent label. Those messages dont sync up in thunderbird on my windows pc, under the gmail smtp account using the same user name. email sent from thunderbird does show up in the gmail sent folder. How to get sent email synced up between devices?

I can not down load Emails from Yahoo to Thunderbird. Every things was fine as of Aug 26th. On Aug 27th with no changes to any system settings the Yahoo Emails would not down Load. I am running Win 10 on my system. I disabled the antivirus. Reloaded Thunderbird - no effect.

I have since deleted Thunderbird and then reinstalled  latest version of Thunderbird (154.0) .
I re-entered my password. I checked the OAuth2  settings and they are set as described in the support article "OAuth2 Authentication for Yahoo, AOL and ATT". 

Message bar at bottom of Thunderbird screen shows: Myaccountname@yahoo.com:Downloading message 1 of 7 The emails do not down load - then after a few minutes - a no messages to download message flashes and then blank - nothing

I am out of Ideas. Anyone?