Thunderbird Community Forum

Since about November 2025, all the mails I try to sent to @sfr.fr addresses (different recipients) fail and I get the following message: Sending of the message failed. An error occurred while sending mail. The mail server responded: <xxx.xxxx@sfr.fr> recipient domain rejected (blacklisted by local policy).

Please check the message recipient "xxx.xxxx@sfr.fr" and try again

I did not have this problem before. If I use Greenby's web mail (My email provider ), the messages are sent without any problem. I would very much appreciate some help to solve this problem! P.Y: pemy@pemyoung.plus.com

Can't drag and drop attachments from Thunderbird into file manager. I get a windows message box that says "Unspecified error" white cross on red circle. If I drag and drop with the control key held down it creates a file of zero length in the selected destination, It's not running as admin. Problem only just occurred.

I disconnected a Google Workspace account - Calendar and mail - from a former workplace. As far as I can tell, it's been deleted from Thunderbird.

However, I'll still get dialog boxes and an occasional browser popup asking me to reauthorise it.

How do I get rid of it once and for all?

Hi - Thunderbird has not fetched any emails from the past two days. I am running 153.1.0esr (64-bit) on Windows 10. If I remember correctly, I downloaded that version four days ago. I vaguely recall getting some message somehow that I needed the ESR. (Sorry I don't have a very good memory!) Thunderbird did fetch emails for two days after that...but I suppose it's possible that I didn't restart Tbird right away, so maybe it was still using an older version until two days ago?? My ISP is RCN/Astound. Last week, I changed my password on both the RCN webmail and on Thunderbird, and I could send and receive after that. Tonight, when I discovered that Thunderbird wasn't fetching, I also tried to send an email, but I initially received an error message. It was something like "Your message was unable to be saved" and then there was something about saving it as a draft. I've seen that message many times over the years, but I don't remember exactly what it said. Thinking it might be a password requirements issue, I changed my password again. I don't know if that mattered, but I am now able to send emails -- but I still can't fetch them. I turned off my Windows firewall and Windows real-time threat protection. That didn't help. I saw this thread https://support.mozilla.org/en-US/questions/1531863 tonight and set "network.dns.disableIPv6" to "true." That didn't help either. I would appreciate any assistance you can provide. Though I am not a expert, I am happy to provide more info if needed. Thank you in advance for your help.

I have a lot of emails stored in different local folders. My search now hang. They go so far than just hang. Is there a way to rebuild the complete indexing for my thunderbird install?

My normal inbox is a blue envelope at the very top of the left hand list. Recently, another inbox, a yellow folder further down, has appeared. It has a Trash above it. There are emails in it. There is nothing in the top Trash. My incoming emails seem to jump between these two. Also some emails seem to be disappearing. This is not ideal, and didn't used to happen.

I'm getting frequent popup messages from McAfee, my email threat detector, that they've detected and stopped a threat, but none is identified. McAfee's chatbot wants me to create a new profile and add my email accounts to that profile. Will I lose access to all my currently saved email messages and calendar information?

I changed my password in my Juno account and have logged in via a browser with the new password several time. But Thunderbird attempts to connect continue to fail. I deleted the old password in Thunderbird in the Privacy & Security section thinking it would update when the new password works - unfortunately, it never works. I reviewed all the Juno settings in Thunderbird and they are all consistent with the Juno Support recommendations. Now what?

Hiya, any re-arranging of the account list does not work. Been like this for months. Checking again today after Thunderbird version update it is still the same.

The drag and drop sort in setting works however the new list order is not applied to the actual account list.

Win11. Thunderbird 154.0 (64-bit).

Any ideas? Searches are pretty much only showing instructions on how to drag and drop. No solutions that I can see. Thanks in advance.

Thunderbird has stopped receiving or sending email. I just tried to send a message and received the following error message: "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.gmail.com timed out. Try again." This has been a problem for several days. Potentially since the last update. Please help. Thank you.

I wish to have a non American email client, but most free ones have a 1GB limit. Can I set Thunderbird to save all emails to my home PC so that if I delete the email in the email client, it is still saved on my home PC? So far I have not downloaded or installed Thunderbird, so just asking if it is posible, if so I will install Thunderbird.

In the last month or 2, when I delete an email it does not show in the trash folder. I can wait from 5 minutes to even the next time I reboot my puter to finally see it it trash. Sometimes it sends it to the all mail or important folder instead of trash. And if I delete from there, it still takes tons of time to end up in the trash folder...if it even gets there. This seems to be getting worse by the day. I have clicked repair folder, no change, I have cleared Thunderbird's cache, no change. It's also now taking way too much time to load an email that contains a picture. This happens with at least 3 of these gmails. I'm at a loss here and extremely frustrated and about to change these gmails from imap to pop. win10 and TB is up to date. But it doesn't compact folders as much as it used to either. Any help appreciated

Goedendag, Ben zelf nieuw in Thunderbird. Ik heb diverse mailaccounts en ik zie een Verzamelmap staan met daarin ondermeer de Concepten en Verzonden mails. Deze zie ik liever per account weergegeven worden, kan dat?

Ik gebruik IMAP op al mijn accounts, na het instellen zie ik per account wel al mijn ontvangen mails staan, maar niet de verzonden mails? Ik denk dat dit inherent is aan mijn vraag, maar hoe kan ik dat dus oplossen?

Tot slot zie ik Mail-conversaties staan van berichten en hun antwoorden, maar dat wil ik helemaal niet. Ik wil gewoon alle berichten op datum & tijd gesorteerd zien staan. Hoe krijg ik er die conversaties uit?

Dank voor alle hulp alvast!

Groet, Pico

I've been a Netscape-based user for almost as long as home IT has been around. Am attempting to finally take the plunge and get away from the Seamonkey Suite to use just Thunderbird for emails, and the wife would like some of the same viewing pane colors to be the same as she's used to.

Following assorted online suggestions for enabling the use of 'userChrome.css' to change the background colors of folderPane, threadPane and messagePane aren't having any effect. I've:

• Set 'toolkit.legacyUserProfileCustomizations.stylesheets' to TRUE
• Created 'chrome' folder and specimen .CSS file
• Added color values for the above properties
• Restarted TBird after each setting change attempt, but no views are changing

I've also attempted to make heads/tails out of guidance for using Debugging Tools to inspect elements to find/verify the current names of properties that I want to change, but have not been able to work that out.

I'm not a complete IT novice--I am a 20-yr sysadmin, not a developer. I can write PowerShell, but no HTML experience. Take pity on an old man?

I have upgraded to TB153.0.3ESR. I've been on the ESR stream for a long time now. But recently, I started having trouble with my google calendar appearing. I've deleted the provider plugin, I've moved to OAuth2, and for the most part, calendars that I have that are read-only from google show up all the time. But my personal read/write google calendar will not show up.

If I go in and delete the cache.sqlite file, and then start Thunderbird, my entries show up. However, if I switch to a different week, my read-only calendars still show up, but my personal calendar goes away.

I've tried everything listed in all of the steps to fix this, but I can't find anything that gives a clue as to what is happening. Anyone else see this?

Steve.