Thunderbird Community Forum

After my Thunderbird were upated to 128.3.0ESR (64 Bit), some received email have became some messy code. but some email are ok. but in my another computer whose Thunerbird is the old version, that email is ok.

I am testing sending emails to a mailing list sending them all as BCC.

All of the emails when received show "Undisclosed Recipient" as the Sender instead of Displaying my name as the sender.

Another thread said this might be a Google thing. I am sending the emails from a work email not Google though I do not know if Google is the underlying sender for my work domain.

Any ideas of how to fix this?

I want my recipients to know the email is coming from me so they don't think it is spam.

When I open Thunderbird (Mozilla), my files are not current. In other words, the most recent emails, probably since the last time I used Thunderbird, in my file folders are missing. I have tried changing the server settings but I think they are correct. Please be patient with me, I am unfamiliar with all the terminology, etc. Also, when I first enter Thunderbird, it does not recognize my password. A window opens with the message "Login to server imap.postoffice.net with username john.fn@usa.net failed." That message also appears when I click on Get Messages. Thanks for any help.

I have received several emails on my laptop Tunderbird account with content like this:

I can read these emails using BlueMail on my phone. Can you assist in resolving this issue please? Thank you

Why is changing column width so complicated and buggy under 128.3. Nebula on Mac?

simply want to enlarge From column - before Nebula - just do it. Now, pain in the back - only lets you do a bit and moves everything else and still doesn't let me do what I used to do. What a mess they made out of a great program !

I tried to get a copy from timemachine (backup) and it complained that the profile is from a newer version. TB is full of bugs and horrible UI "features" that suck - simple things like changing column width for example.

When I opened Thunderbird today, I was greeted by a giant red message warning, "This is an unsupported version of Thunderbird!! Thunderbird monthly releases are not considered stable for general use." By following a provided link to the "latest stable version of Thunderbird," I found that was version 128.3.0esr.

I did not request an update. I did have Settings> General> Updates set to "Automatically install updates", so I suppose that is how I got this version. But how was I pushed to an unsupported version? Do I need to turn off automatic installs to be protected from this in the future?

Starting on 10/01/2024 Thunderbird no longer allows me to send or receive email.

When I try to read messages using Thunderbird, I get the following: Sending of password for user XX@msn.com did not succeed. Mail server outlook.office365.com responded: Logon failure: unknown user name or bad password.

When I try to send messages using Thunderbird, I get the following: Enter your password for XX on smtp.office365.com:

I have tried redoing the password and it does not help.

This is on a WIN/10 system. I updated to the latest version of Thunderbird and it did not help.

I checked out Thunderbird on my WIN/XP and get the same results as with WIN/10.

When I use Firefox and login to https://outlook.live.com/mail/0/, I can send and receive email as before. The same is also true with my Mobile Phone.

Here's what I've done to try to resolve my issue: - Looked up this help article on support.mozilla.org - My precise problem matches "IMAP/POP3 work, but SMTP does not work" and it's for a personal account so I go visit this article on the hellish ever-changing landscape that is The Microsoft Knowledgebase - All of the server connection settings (address, port, TLS flavor) match - ... but Microsoft wants me to use either "Modern Auth / OAuth2" (other methods are being depreciated), neither of which seem to be available in Thunderbird. - This seems strange since the account itself is using Oauth for the IMAP connection. Why isn't it an option for SMTP? - I try to work around it by creating a new app password on my Microsoft account... - I still get an error telling me to enter a new password (with the checkbox to save in password manager)

Hi, tbird 128.3.0 esr 64b w11p. A prob new to me. Only for MS outlook mail (aka office365 email, but no ofc365 on my laptop, just the email in tbird). -in unified folder view, my MS mail acct (it still has the "hotmail.com" address, but works), is not present -- that's the problem. A workaround is that I can choose both "unified" and "all" views together -- but while the MS mail acct now appears in the folder pane at the top, as well as in its own "place" at the "accounts" area below, that MS mail acct not longer has its messages appearing in the "message list" pane. I have to go to MS Mail's own place below, in the folder pane (as stated above),to see its msgs. in msg pane.

 I could use the "all" view, but it's not as nice & I never have had to choose that before this prob.

- I did run "repair folder" for MS mail's own inbox (again, below, in its own place below, in folder pane, accts). And I restarted t-bird.No change in behavior, unified view does NOT list my hotmail emails.

I have used & am comfortable w/config ed, but only when I have the proper instructions you may post in your potential reply (I am not a coder).

Please advise, thank you.

missing Thunderbird profiles: Thunderbird works on my windows 11 box but, ]\AppData\Roaming\Thunderbird\Profiles can't be found. I see others have the same issue, all recently uploaded as I am doing now, so something must have happened. None of the suggested fixes have helped. Has anyone come up with a strategy that works? Thanks for any help or direction.

thunderbird did a upgrade again... now my 4 email account works great. but now my IMAP account will not let me send emails. i can receive them great... what gives? why does this happen? how can I fix this?

I have Thunderbird 102.15.1. I can receive emails from my Hotmail account (set up as POP3), and up until 22/09/2024 I could also send emails through Hotmail.

At some point after 22/09/2024 I am no longer able to send emails through Hotmail.

I have the following setting for the outgoing server (SMTP) (which worked fine until 22/09/2024):

Description: hotmail server name: smtp.office365.com Port: 587 Connection security: STARTTLS Authentication method: Normal password

When I try to send an email I get the following message:

 "Enter your password for adriharp@hotmail.com on smtp.office365.com:"

with the password dialog box underneath.

If I change the authentication method to OAUTH2 for the outgoing SMTP server, I very briefly see the "enter credentials" screen flash up, then the Sending message box appears and Thunderbird hangs until I hit the Cancel button. If I leave it to run, I get this message:

 "Sending of the message failed. The message could not be sent because the connection to Outgoing server (SMTP) smtp.office365.com timed out. Try again."

If I try to generate a new app password in my Microsoft account and enter this with the outgoing SMTP server authentication set to Normal Password, I get this message:

 "Login to server smtp.office365.com with username adriharp@hotmail.com failed."

I use OAUTH2 authentication for the incoming Hotmail server (SSL/TLS on outlook.office365.com). This works fine.

My questions are: - does anyone know why this change happened in the last few weeks ? - how can I change my settings in Thunderbird (and/or Microsoft Hotmail a/c) to send emails via my Hotmail account ? - do I need to upgrade Thunderbird to send emails via my Hotmail account ?

I am running Windows 7 on this laptop so I think my options to upgrade are limited to 115.10.01.

Thanks for your help.

Dear Thunderbird team I am an avid user of TB (home desktop Windows PCs), but I have been resting on my laurels on v78 for a few years now. I know, shame on me. I would like to upgrade to a stable "modern" release (emphasis on "stable" please). Can you please advise if I should aspire to end up on 115 or 128, and how I might get there ? From reading some older blogs, there is advice that says.... first go to v91, then v102, then v115, and so. That seems a bit tortuous, but I am happy to do so if that is still the recommended approach.

Also, can you advise on how I manage my Profile through all this, do I need to do various exports/imports as I move through these different versions, etc.

Many Thanks