Thunderbird Community Forum

All emails in my trash folder disappeared. I do not know if this is due to something I did, or some other reason. Is there any way to restore the deleted emails?

All of a sudden my comcast.net email is no longer accessible through Thunderbird,it claims I'm not using the correct password, even though none of the settings have changed. I can still access my email through webmail, using the same password. What's happened? and how can it be corrected thank you

As so many have experienced, but I have yet to find the actual solution, I will bring up the issue.

I recently purchased a new computer. Installed Thunderbird, created all the mail accounts I have and... no problems. All the accounts, once created, populated with emails. For 3-4 days, there were no issues.

Important to note: I let TB use all the default settings. And once everything was up and running >>>>I did not change anything<<<<<.

Then a few days later, I started getting the following messages for two accounts that had migrated from q.com to myctl.net. Entering the 100% proven-correct password results in the know endless-loop of entering the password and the same pop-up error message. The PW is 100% correct as I can go to Centurylinks' website and login using that same, exact password and read my emails.

I've spent enough time trying all the suggestions here, reddit, facebook etc so I'd thought I'd see if anyone has actually found a solution.

Recently, I exported my Address Books, i.e., Personal and Collected as CSV files. Looking through those files I discovered that not all "Fields" from the Address Book had been included during export. Some of my contacts include three or four email addresses. The CSV Header added to the top of my exports only shows "Primary Email" and "Secondary Email" in the Header. There may also be other Fields of information that are not exported, but I haven't looked and, frankly, didn't expect to have to check my exported files. When editing a Contact if that contact has more than two email address I expected those to be part of the export file. I am running the current version of Thunderbird on my Windows 11 computer and an earlier version on a Windows 7 computer. Both versions of Thunderbird do not export all Field Data from the Address Books.

I have two different email accounts in Thunderbird. One is a Gmail account one is from Comcast.net. When I start Thunderbird it checks Gmail fine, but then I get a little pop up in the lower left-hand corner it says Comcast has blacklisted my IP. After a few more seconds a dialogue box pops up asking for my password. When I type in my password I get the same crap over and over.

I know my IP is not blacklisted because I can log on to my Comcast account in a browser no problem same IP. What's going on, do you think I picked up some sort of malware? I've scanned I can't find anything.

Michael Butler michael.butler101@comcast.net

Bonjour,

Depuis plusieurs semaine ce problème survient.

"Le certificat pour imap.gmail.com:993 ne provient pas d’une source sûre".

Ce problème, uniquement sur l'ordinateur avec windows 11. Sur le GSM pas de problèmes.

D'avance merci pour votre réponse. Cl. BERNARD

Courriel: nonpub57@gmail.com

Hello,

This problem has been occurring for several weeks.

"The certificate for imap.gmail.com:993 is not from a trusted source."

This problem only occurs on my computer running Windows 11. There are no problems on my mobile phone.

Thank you in advance for your reply.

Cl. BERNARD

Email: nonpub57@gmail.com

Hallo. Ich habe das E-Mail Programm aufgerufen. Es hat 2 Hauptordner. Allgemeines und Sonstiges. Ich habe aus Versehen "Allgemein" gelöscht. Darunter sind alle meine persönlichen Mails. Oh Gott. Wie komme ich wieder an diese wohl ran? Danke für Ihre Hilfe.

I've been using TB for years. Lately I can be browsing the Inbox when the contents will disappear and I get a message saying something like no messages found. After about 30 seconds the Inbox is displayed again.

TB never used to do this and it is similar to Firefox refreshing the screen which it also never used to do this.

Also how do I get from the Beta version to the standard version?

Hi, The goal is download attachments from a RSS feed. I set a specific folder so i don't have to select path for every single file. Then clicking on the file link and it should start to download but it is very unreliable especially when used on many files in sequence it silently fails. Related big problem is absence on any useful file transfer indicator like Firefox has. There is a "download manager" tab but it is completely useless. It does not show any progress and the view has no scroll bar so nothing useful can actually be seen there. Downloading using "save as" button works. So you should either fix the direct link download or disable the feature completely until it does work, to avid missing files, because that is the worst outcome.

When transferring Thunderbird Profile between PCs passwords are not transferred. Transferring Profiles between two Windows 11 PCs ( both are the same version ) the email details are transferred but no passwords are. I followed the instructions found on the forums to transfer profile between PCs

Hello! After I was on vacation for about 2 months, I suddenly couldn't receive any more emails. "Login to the server imap... failed." Why this - and what can I do? Thanks!

hi all. if i create a new blank Task it automatically pre-selects today's date as the start date, and if i create a Task from an email it sets the date the email was received as the start date. i know can filter tasks lists, and hide columns, but the real issue is how it looks on the calendar; with the fixed start date, setting a due date in a month's time results in a fixed, ongoing task for a month. is there any plugin or setting that will just stop TB setting a start date that i can't change, or letting me explicitly set it myself?

Starting yesterday, Thunderbird will not let me delete all the junk from my Junk folder. When I right click on it and select Delete, T-bird freezes with NotResponding and I have to restart it. Once I went through and used Delete on the individual files within the Junk Folder. When I restarted T-bird, it had moved all those files to my Inbox - several thousand of them.

Can I simply delete the Junk file at \AppData\Roaming\Thunderbird\Profiles\hxza0a1k.default-release\Mail\mail.aircraftdesign.com? Or would that kill the whole thing?

Any other workaround? I spent 4 hours talking to Network Solutions, they checked all my account settings and said it is all correct.

I Updated to Your Latest Thunderbird (Default) Update: And Now I Can't Open Addresses in A-Separate Window.... So I went Back to Previous Installation: And Now It Can't Find my Original Histrionic Emails on my D:Drive... I'm Trying to Reinstall my Original Version: And It's now Looking for mt Emails (which Don't Exist) On my C:Drive... It's Now Midnight Here and I'm Going To-Bed: I have Other Actives Saturday and Sunday Morning.... Can You Help Me Via my Email???? Lawrence W Emark X@verizon,net> Thank You!!!!

(PII redacted by moderator)

Can get(POP3), but can not send emails to a newly created personal outlook.com account.

the following error occurs when trying to send mail: Unable to authenticate to Outgoing server (SMTP) . Please check the password and verify the 'Authentication method' in 'Account Settings | Outgoing server (SMTP)

all my setting are correct per thunderbird and microsoft:

  (smtp-mail.outlook.com, port 587,  STARTTLS, OAUTH2, xxxxx@outlook.com)

thunderbird error log file contains the following: . . . mailnews.smtp: S: 535 5.7.139 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]

SmtpClient.sys.mjs:452:17 mailnews.smtp: Command failed: 535 Authentication unsuccessful, SmtpClientAuthentication is disabled for the Mailbox. Visit https://aka.ms/smtp_auth_disabled for more information. [CH5P220CA0005.NAMP220.PROD.OUTLOOK.COM 2026-02-28T23:29:21.878Z 08DE7703D4D1982A]; currentAction=_actionAUTH_XOAUTH2 SmtpClient.sys.mjs:578:19 mailnews.smtp: Error during AUTH XOAUTH2, sending empty response . . .

Based on my understanding its seems thunderbird is using SMTP AUTH instead of OAUTH2 as required for newer personal outlook.com accounts. Is my assessment correct? If so, is there a fix?

Last night Thunderbird deleted all my sent e mails. I had 7000 items in my sent mailbox. This morning they all were gone, except for things sent since 10:00 pm last night. Our server provider said they were deleted by Thunderbird.

Does anyone know why this happened and can they be recovered.?

We do a back up on an external drive. Can we go back two days and get them reloaded?

Is there a way to prevent this happening in the future?

I am using an old PC running Windows 7...yes, I know we are beyond support.

Thanks, Nancy