Thunderbird Community Forum

Hello, I started using Thunderbird in order to be able to manage all my email accounts from one place and I stumbled to one problem. I have 6 different email accounts and all are created by me.

I know that I cannot add a Proton account as it requires a paid service from Proton that I don't need as I use it only as a backup account in order to be able to recover the other 5 ones.

My Yahoo account added successfully without any problems as my 2 Google ones.

My primary outlook was added successfully by using the simple add account setup. The problem started when I was trying to add my second outlook account. Everything I tried it always gives me an error that says "Authentication error. Unable to login at server. Probably wrong configuration , username or password." I know for a fact that the username and password are correct as when I start to add the account it displays a prompt on my phone to verify the connection. But at the last step it says the error I mentioned. I even tried to clear all cookies and passwords and tries again but without any success. I compared the configuration of the 1st outlook one to the 2nd and they were correct. Correct hostnames, security etc.

I also checked the account settings in of the emails on the providers page and the only difference is that in the 2nd I haven't enabled the 2FF authentication.

What am I doing wrong?

Appreciate the help! Alex

Full errror: Unable to write the email to the mailbox. Make sure the file system allows you write privileges, and you have enough disk space to copy the mailbox.

Operating system Windows 10. I have Thunderbird installed on three computers. Two on Windows 10 and one on Windows 11. I have two accounts Helen and Kevin. I have no problems with my Kevin account on the there computers. The error only occures with my Helen account and only on the Windows 10 computers. Not the Windows 11 computer. Can you fix this?

I was having trouble with folders in Thunderbird on my desktop which were different to my Thunderbird folders on my android phone. I deleted Thunderbird from my desktop and also the profiles. I wanted to start again, but Thunderbird will not reopen. How can I get Thunderbird to open and start over with the setup. I am enjoying Thunderbird on my phone and it has all the folders from the email server. Thank you

Moderator note: Moved from the Firefox Desktop forum to the Thunderbird Desktop forum.

Downloading messages is now noticeably slower on an older desktop if the 'Inbox' folder is selected/focus. If focus is changed to a different folder (i.e. 'Sent') the message downloads become blazing fast.

Deleting messages seems slower as well and I think it is related. May involve inserting/deleting entries in the grid.

The held I did find looked like it was from an earlier version, many items in that example are not on the new message form for Ver152, in particular can attach a variety of things but File is not among them.

Hi, I can sign in and all mail accouns work fine. However, i USED to be able to go to passwords then chose show passwords and (after typing my global passsword for TB) I would see my real passwords (not the long string of letters) for each account.

Now I cannot see these anymore. How come and can i see my real passwords for my accounts?

thanks

Bonjour, Lorsque je me connecte, j'ai un message que me dit : User is authenticated but not connected et ceci sur toutes mes boites mails. De plus, suite à un changement d'ordinateur mes mots de passe sont visibles aves des chiffres et des lettres credential redacted (see https://github.com/thunderbird/aaq-scraper/issues/15 ) Je ne peux pas voir mes mots de passe enregistrés Je ne peux donc pas me connecter à mes boites mails car les mots de passe ne sont pas valides A savoir que je suis sur certaines boites mail sur @outlook.com (anciennement dbmail)

Pourriez-vous m'aider à débloquer le problème car je suis très embêtée Par avance merci et bonne soirée PS : Si je supprime l'application et que je l'installe de nouveau, vais-je perdre tout l'historique (dossiers, agendas, contacts, etc ...)

I changed my yahoo mail account (xxx@yahooo.com) password to counter a threat. How do I change the pw on my Thunderbird account xxx@yahoo.com? I seem to need to provide a pin, but I don't have that.

It's very odd. Normally moving an email, say from the Inbox to the relevant year's archive, takes "no time at all".

Which is true for all the mailboxes shown on the attached screenshot, EXCEPT for the four at the bottom. Moving even one message from Inbox to Yiddish can take ten seconds or longer (with the dreaded "Not Responding" occasionally). Moving something in the opposite direction is also screwy, only from those four.

I had thought that it was because they're rather large. This first started when there were just Yiddish and MSW, and I split off most of the earlier years into the archives shown. To no avail.

It's only an annoyance, but I'm puzzled about how such a thing could happen.

Also very slow tagging or untagging a message just in those mailboxes.

I am trying to add a new identity, I already have 3, so perhaps there is a limit? I have created the identity under manage identities with no problems. However, the new identity does not appear in Thunderbird, where the others are. The address is not recognized, and does not receive emails. I feel like I have missed a fundamental step but have followed the help instructions & cannot see what I am doing wrong. Ive checked and the program is up to date. I hope someone can offer advice thanks Anne

I got a message: "Authentication failure while connecting to server outlook.office.com." Please assist in getting this resolved.

Thanks

When I replaced Outlook with Thunderbird, it was brilliant. It was so good, I chose to donate! Now it's changed. I was trying to find out why a forwarded email changed the body of the message to a HTML attachment. I stupidly followed a wrong AI help process and changed something I can't remember. Now all of my emails only show hyperlinks and not the pictures these hyperlinks point to. I would like the pictures back and the option to download these if these are safe in new emails. I've seached everywhere I thought I went but I can't find the setting that does this. Please help if you can.

The Thunderbird calendar, displayed by the week, Saturday June 27-Friday July 3, 2026 in my computer says today is Monday, Jun 28, whereas it is really Jun 29. Each day in the calendar is off by 1 day. e.g. tomorrow it says Tuesday Jun 29, etc. If I change the view to Multiweek, the dates and days of the week line up as 2 June 29s for Monday and Tuesday!. Wednesday becomes June 30 and Thursday skips July 1 and is July 2! What to do to correct all of these problems? Thanks, [edited email from public]

I had issues two weeks ago with my emails being full. They added more space and one of my coworkers emails started to go into my Spam folder. Then today they showed up in my inbox and after I read them they disappeared completly. Right after that every email since he started with us last year disappeared off my inbox. I need customer support to call me to fix this. [edited phone# and email from public]

I created a user profile for IMAP and all was OK....Until I deleted the profile for POP and I lost all e-mail folders that I didn't move to IMAP. My PC is running Linux Mint. How do I get my lost e-mails?