Thunderbird Community Forum

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.

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 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.

So my question for the community is : why did this happen all of a sudden today and Why can't I delete or remove it?

Tried re-starting the app. Did a pc re-boot.

Using: Linux Mint 22.3 - Cinnamon 64-bit 7.0.0-29-generic Nemo 6.6.3 Thunderbird 153.1.0esr (64-bit) - but it has happened in the previous two releases which is when I first tried.

As per title, when trying to save an attachment I have a number of locations on directory trees at least 5 deep on networked shares (SMB). Attempting to access these via the favourites entry in the file dialogue does not work.

I use favourites to get round having to trawl through the structure each time I'm accessing very frequently used places. This works with everything I have tried so far, but it does not seem to work with Thunderbird.

I get the following two errors:

If I just click an entry in the favourites folder I get a dialogue as in screenshot 1. If I right click the entry and then select open in file manager I get a dialogue as in screenshot 2.

The shares are attached using Gigolo, so I presume this uses GVFS to mount them but what effect that has to programs is beyond my knowledge.

I can use the shares to save something from Thunderbird if I use the same file dialogue but then access the location via the "other locations" (see screenshot 3) , then select the correct network drive and track through to the same directory, so the issue appears to be that Thunderbird can't use the favourites function, not that it can't access the directory itself.

Anyone any ideas?

I am using on Mozilla VPN on my Linux computer. Thunderbird is my email program. My ISP is Spectrum. I have a very old rr.com account. When I instruct Thunderbird to "get mail", it gives me a pop-up "Thunderbird connection to server mail.twc.com was reset". The only way to stop this is to disconnect my vpn.

Is there a way to stop this behavior? I would prefer to leave the vpn on at all times.

BTW, I am in the U.S. and select a location in the U.S. for the vpn.

Thanks.

How do I configure my thunderbird client to send e mail using my gmail account. Gmail's "solutions" do not seem to work - see attached for what they claim. I have used both ports 465 and 587 and the appropriate connection security.

Been longtime user of Thunderbird. On 8/6/2026, Thunderbird refused to connect with the email service provided by DirectLink, Canby Telephone Association, Canby, OR. Have been working with Live Chat to restore connection. Have removed and reloaded Thunderbird. When I put in Security Setting under Connection security (SSL/TSL) and then test the setting, I get an error occurred connecting to mail.canby.com:993. DirectLink techs say they have done everything in their power to check their connection with Zimbra mailbox. Then they say, contact Thunderbird. I have been on Live Chat several times and they have checked my settings and my ipv4 settings. Tell me what I can do to get the email system to operate as it should. Clyde Hockman 503-592-4490

Hello,

I'm having an authentication issue with Thunderbird on Fedora when trying to add a second Microsoft account.

My main @outlook.com account works without any problems using IMAP/SMTP and OAuth2. However, I can't get my @outlook.fr account to work.

For the @outlook.fr account, I'm using:

IMAP: outlook.office365.com, port 993, SSL/TLS, OAuth2 SMTP: smtp.office365.com, port 587, STARTTLS, OAuth2

When I add the account, the Microsoft login page opens normally. I sign in with the @outlook.fr account, complete 2FA, and Microsoft confirms that the account has been successfully connected to Thunderbird.

However, as soon as I return to Thunderbird, I get an authentication error saying that it was unable to log in to outlook.office365.com with that username.

I've already tried clearing Thunderbird's saved passwords, cookies, and web cache. I also confirmed that IMAP is enabled in Outlook web settings, checked the account aliases/sign-in preferences, and verified the server names and ports.

Since the Microsoft authentication itself completes successfully, I'm not sure why Thunderbird fails immediately afterwards. The same setup works with my @outlook.com account, so the problem seems to be specific to the second account.

Has anyone encountered this before, or is there anything else I should check?

Thanks.

Thunderbird e-mail does not connect to the server. It times out. Internet connection is good as verified with service provider. I have exited from the email and tried to connect again. Still no connection.

my new message page doesn't now have a box -top left -to restore edited/ corrected lines of script. When editing wholelines of script, even whole lines have diappeared. and couldn't be found, and not in draft. Advice would be very welcome. Thanks. Mike

Dear Thunderbird Support Team,

I am unable to log in to my email account through the Mozilla Thunderbird desktop application. I am getting an “Authentication Error” stating that Thunderbird is unable to log in to the mail server and that the username, password, or configuration may be incorrect.

However, I have verified that the same email credentials are working correctly through webmail, so the account password is valid and the mailbox is accessible.

Issue Details:

Application: Mozilla Thunderbird Desktop Issue: Unable to authenticate/login to the email account Error: “Authentication error – Unable to log in at server. Probably wrong configuration, username or password.” Webmail Login: Working successfully Thunderbird Login: Failing with authentication error Operating System: Windows

I have already checked the email credentials and attempted to configure the account in Thunderbird, but the issue persists.

Kindly help me identify the cause of the authentication failure and provide the correct Thunderbird configuration/settings required to access the email account.

I can provide screenshots and the current Thunderbird account configuration if required.

Thank you for your support.