Thunderbird Support Forum

I've been running Thunderbird for years on Gentoo which has version 115.10.1 as the most recent. I don't send much mail so I'm not exactly sure when this problem occurred, but I'm unable to authenticate with my SMTP server. I have not changed any configuration. Some weeks ago a changed my password on the server, but I made the appropriate changes to Thunderbird password manager. All settings, username and passwords are 100% correct as I copy pasted all of them. IMAP on the same server (uses same credentials) works.

I have tried deleting and re-adding my accounts which did not help. I have also tried deleting my profile folder. All other mail clients (e.g. claws-mail, kmail, mailspring) with the same SMTP server don't have any problems sending mail. This problem seems to only affect Thunderbird and Thunderbird forks such as Betterbird.

I have no firewall and am using SSL authentication with cleartext password on the SMTP server.

I get the following output to console on attempted sending of message:

console.error: (new Error("Server error 503 Service Unavailable", "resource://services-settings/Utils.sys.mjs", 390)) console.error: mailnews.smtp: "Command failed: 535 Incorrect authentication data; currentAction=_actionAUTHComplete" console.error: mailnews.smtp: "Authentication failed: Incorrect authentication data" console.error: mailnews.smtp: "Authentication failed: Incorrect authentication data" console.error: mailnews.send: "Sending failed; Unable to authenticate to Outgoing server (SMTP) mail.kapsi.fi. Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)'., exitCode=2153066805, originalMsgURI="

There is no option for message headers under View. How can I see email message headers in Thunderbird?

I Googled how to do this but they all say there is an option in the main menu under View. Maybe at some point there was, but not now. So how can I see the email headers?

I'm getting login issues to my Outlook account. I understand this is an emerging problem and I"m following the instructions here: https://support.mozilla.org/en-US/kb/microsoft-oauth-authentication-and-thunderbird-202

However, I can't follow the instructions under section "Change Thunderbird authentication method for sending messages (SMTP)" because I don't have "Outgoing Server (SNMP)" in the lefthand side. I do have an option to edit Outgoing Server settings, but there is no option to set OAuth2 in the Authentication Method dropdown. I am unable to send Outlook emails, and I'm unable to complete the instructions to fix it. Help is appreciated!

Today, most of messages have suddenly disappeared from my TB inbox, leaving only the most recent 105 out of approx. 18,000. I have not performed any operations (compacting, archiving...) that could have caused this.

I immediately invoked the 'Repair Folder' command, which did not resolve the problem. Further investigation revealed that the 'Inbox' file ('Profiles' folder) actually contains only 105 messages - seems like the 'Repair Folder' truncated the file!

Fortunately, all the messages are still on the server. My question: Is there a method to 'force' reloading of the missing messages?

Thanks, Ray

I have a Gmail account and Talktalk account, both on TB, and sometimes as a reminder to myself I send an email from Talktalk to Gmail. However these emails do not appear in my Gmail inbox but instead go to All Mail, Important and Unwanted folders. How do I stop this.

I want to customize shortcuts in Thunderbird using tbkeys but I can't find the right command name.

In the description is written: "Most command names can be found in the main command set file of the Thunderbird source code."

But where I can found all/ more/ other command names?

In my case I want to change:

• "Move to previous UI element" (default: Shift + Tab)
• "Move to next main UI area" (default: F6)

listed in this overview

Hello and thank you for your help, I am trying to find my old Mozilla Thunderbird, e-mail account my older computer does not work, anymore, I have not used my Thunderbird, e-mail account in over five years, because I am on a newer computer. And could not access my information on the older computer that does not work. I could really use all my information and EMAIL account for Thunderbird, because I have many years of information on all those emails, I can’t find my password, 0r email address for Thunderbird emails, because I have not used my Thunderbird account in over 5 years. My old computer does not work and Thunderbird Email is a great program. How could I get my old emails back? And working. If you could please give me more or less a time, and date, to wait for your response, so I can wait for someone to help me, and not lose that opportunity. It would be much appreciated, so I don’t miss contact with someone that can help me with this matter. I am in the East coast. And thank you for any concern in this matter please help.

Hello,

I have just imported my old email from Outlook to TB Local Folders. Everything works out except some of the email (not all) show a wrong date in the email list. The date show a future date like 2/7/2101, 6:28 AM. Please check the attached image. Any idea?

Hi I am having problems with Thunderbird, i’m not sure if it’s to do with a windows 11 update or something else. Thunderbird is not responding also at the start of the ‘not responding’ emails from one of my accounts disappeared and then gradually started to reappear but didn’t get up to date and now just not responding st all. I have tried various things to resolve this, uninstalling and reinstalling Thunderbird, doing this and opening my pc in safe mode, doing this and opening Thunderbird in safe mode. Deleting and reinstalling the latest windows 11 update, reinstalling the latest Thunderbird update. I don’t know what to try next? I read somewhere to delete your profile, after saving it, and getting a new profile but no idea how to do this. Any help appreciated.

Good afternoon to all.

I use Message Filters to automatically send certain emails to two specific folders upon receipt, based on some defined rules (mainly who the sender is). Yesterday, I accidentally clicked "Run Filters on Folder", and the actions for my filter rules ran on every folder in my account, including my Archive folder. I could not find a way to stop the action once it started, so hundreds of archived emails were pulled out of the Archive folder and repopulated into my two specified folders. In each of these specified folders, I had a handful of emails stored in order to be able to come back to them as reference or to deal with later; I remember what some of these emails were, but I don't necessarily remember all of them, and now they're mixed in with the hundreds of emails that were brought back from the archive.

So, I have two main questions:

1. How can I prevent this from ever happening again? Is there a way that I can tell the message filters that a filter should never be run on archived messages?

2. Is there a way I can "undo"/reverse what happened, so that the previously-archived emails are sent back to the Archive? Or is there at least a way to identify which emails were in the two specified folders before they were inundated with all the messages from the Archive?

Thank you.

I would like to have a unified calendar that when an event is added to my gmail or outlook calendar it gets copied to the unified calendar.

Is that possible?

I have several email accounts; and they are all set up the same way on Firefox, and I have checked that that is so. But on one of the email accounts the "sent" file is missing. I have checked the "place copy in Sent..." In the subscription list "sent" does not show up for this account

Do you need more info ?

What can I do / check ?

Thanks, Dieter

Thunderbird Version 115.9.0 I have been using Message filters for many years without a problem. Recently my email provider, Cox, switched all email to Yahoo. The emails remained the same but had to change to Yahoo servers. All of this works fine receiving and sending emails. The only thing I notice is the emails download slower. The Filters now do not work all the time, I run them manually and some still don't work. If I go to the filter and click edit, don't change anything and exit and then run it manually it's works but doesn't work the next time. I wait until all email is downloaded and then manually run the filters, some work and some don't all the time. Thanks for any help. Ray Mulkey, Ray.Mulkey@cox.net.

MacOS Sonoma 14.4 seems to have broken a number of apps. AFter updating to Sonoma 14.4 I experienced a great number of crashes with Thunderbird, so I completely uninstalled Thunderbird and removed all traces of plists, Application preferences, everything, reinstalled Thunderbird, and added back the two email accounts I use with it.

It now takes up to 30 seconds to start up Thunderbird, after which it happily no longer crashes, but obviously the startup time is unacceptable. I experience the same problem with Typora, and the developers there informed me that they believe the problem is with a Sonoma change that broke WebKit. I don't know if Thunderbird still uses Gecko or if the new version is WebKit. Please let me know if other Sonoma users have reported this problem or if it's just my system.

My Thunderbird stopped receiving emails. I am on a Mac. I am posting here because I looked through the list here. Others had the same problem but the conversation is now archived. I tried the offered solutions and they didn't work. So having just fixed mine, I'm posting my solution. Go to System Settings. to Passwords. Unlock Passwords by signing in. There you find your email service listed. Click on it and check that that password matches the password on your account on your email services website. If it doesn't, fix it. Then open Thunderbird on the menu bar at the top, go to Settings ( not Account Settings.) Go to Passwords, to Saved Passwords, click on that and it will show you a list of your saved logins. Below the list, you can click on Show Passwords to see what's there. I had a bad password in there. (I had more than one password that had been saved for Thunderbird.) I deleted all Thunderbird passwords. Then I closed and reopened Thunderbird, clicked Get Messages, filled in the correct password when asked. Bingo. My email downloaded into Thunderbird.

Give that I use TB as my desktop client to access my nyu.edu email (provided by google), and that recently I updated my password as periodically requested by nyu admin When I try to access nyu email a pop up screen come up asking to authenticate with imap.gmail.com. I click next and get a 403 Access Forbidden error (Authentication failure while connecting to server imap.gmail.com.)

Solutions I have tried: 1. Clear cookies, history and cache on browsers and TB; 2. Changed default browsers (Ffox, Ch, Edge); 3. Deleted account in TB and created it again using instructions here https://www.nyu.edu/servicelink/KB0016473 4. Accessed my nyu email on browser to check user name and password. It works. I can access the email.

Nothing seems to work. Still get 403 error. As a result I am unable to authenticate and hence use the email account in TB.

I received a very nice reply to my problem regarding saving passwords. The reply instructed me to reply with certain information. But the reply was marked no-reply@support.mozilla.org. This is very frustrating. Please send coherent instructions. And please read your reply yourself.

Another issue: I tried to make some text boldface, using the "B" menu selection. But instead of boldface, it simple added quote marks around that text. Looks like your website needs work. And the "i" does the same thing.

There are two "bad email" files in Thunderbird: JUNK and SPAM. I'm still not clear on the difference.

For JUNK mail, TB gives us the option to select "NOT JUNK". Good.

But for SPAM, I cannot find the option "NOT SPAM"

1) Why are there separate SPAM and JUNK directories? And why are they managed differently? This seems terribly non-intuitive and inconsistent and just strange.

2) How can I train SPAM filter to not flag good email from trusted senders? For instance, I get email from my wife many times a day for many years. Today, TB put her email into SPAM. Isn't there a simple command to "white list" a sender's email address?