Thunderbird Community Forum

I can download my Outlook.com incoming mail to Thunderbird, no problem. But when I try to send mail from Thunderbird (version 128.3.3esr (32-bit) - earlier versions same problem) I get the following error message:

"Sending of the message failed. The message could not be sent because connecting to Outgoing server (SMTP) smtp-mail.office365.com failed. The server may be unavailable or is refusing SMTP connections. Please verify that your Outgoing server (SMTP) settings are correct and try again."

Microsoft provides settings requiring 0auth2/Modern Auth for SMTP mail: (screenshot)

Checking account settings in Thunderbird reveals that Oauth2/Modern Auth, as specified by Microsoft, is not among the options given for SMTP authentication: (screenshot)

I know there has been quite a bit of discussion on this topic but I haven't found anything specific to help; I've been circling around the problem to no avail and I'm sure you clever people will have an answer!

Have I missed or misinterpreted something here, or is Thunderbird no longer able to send Outlook.com mail?

Suddenly Thunderbird will not send emails from one of my computers. Nothing in my configuration has changed. I compose an email, and when I click 'Send' nothing happens except that the menu bar and button strip at the top of the 'Write:' window turn gray.

I can receive emails with no problem. I have another computer with Thunderbird installed and the same accounts on it, and that PC is able to send without any problem. Today is the first day that I have noticed this issue.

When I then close the 'Write:' window I am asked if I want to save the email as a Draft.

Windows 10 Home Version 22HS Build 19045.5011 Thunderbird Version 128.3.3esr (64-bit)

Since updating Thunderbird lately to 128.3.3esr (64-bit), "Open in conversation" is grayed out, SHIFT+CTRL+O shortcut also doesn't work. There is a small chance it happened on a previous update, I'm not sure. This function is something I use regularly so this bothers me greatly. I tried rebuilding the global database according to https://support.mozilla.org/en-US/kb/rebuilding-global-database with no luck - the problem persists. The file now has 1,18 MB, I'm quite certain it was significantly larger before. The problem occurs in all accounts I have and it worked on all of them before. Threading itself works properly if I go to View>Sort by>Threaded so the messages are recognized as threads properly.

Hello everyone,

I'm experiencing problems using mailing lists in Thunderbird 128.3.3esr (64-bit).

When the mailing list is not expandend i got the error in attachment, it only work if I expand the list.

Any advice ?

Thanks for your time :)

Hi, I have an email account with GMX which I access using the GMX client on Android and Thunderbird via IMAP on my PC (Win10). I created a new sub-folder which I can see on the phone and also if I access GMX using the web client, but it is not displayed in the folder list when using Thunderbird. I have deleted the app and profile data and re-installed but the folder is still not displayed. Any idea of what is going on here? Regards Richard

I either can't view contents of any of my older emails in Thunderbird at all (see accompanying picture), or in some cases, they just show html text code. (Both the inbox and sent directories are affected.) I have followed the Thunderbird troubleshooting suggestions (e.g. disabling add-ons), and clearing the cache, but the problem remains.

My Thunderbird mail directory on the PC is D:\All Users\Thunderbird\Profiles\Macdonald\Mail\pop.broadband.rogers.com\inbox.sbd

FYI - The inbox contains ~7600 messages, while Sent has ~2180 messages.

Hope you can help me out with this issue. Thanks!

... Paul Macdonald

When I search for all email from a particular sender, I get conversations with what looks like the items I want, but upon opening many entries look something like this:

The actual content of the message can not be opened. How do I fix this? Thanks.

It often happens that i get incoming emails that i can not read. it are strings of letters and code and no text. After some time it is again normal until it happens again. When I open these emails in my provider webmail application I can read them. What happens here?

The app can be opened and used, but it has to load for about 2 minuter between each input. The error first appeared after the 7th August update. When I try and click on the app, it starts using about 125 MB of RAM memory and the "Not responding" text appears.

Hi there - been using Thunderbird for donkeys (since it was Eudora!). A few weeks back I started to get messages from Microsoft that I needed to change security settings as they were no longer supported on 3rd party email handlers like Thunderbird. So I re-created the three accounts I had there and it seemed to be OK, though SMTP did not have the OAUTH2 option available ... and when I tried to use the new SMTPs they wouldn't work. So I reverted to the old settings there and it worked again.

But this morning, with the big update to Thunderbird Nebula, I can no longer send emails from the MS accounts. My Gmail one is still OK ... but whatever I try, I cannot get the MS ones to send emails - I get a failure connecting.

Login to server smtp-mail.outlook.com with username xxxxx@hotmail.com failed.

I checked on MS and the details shown there:

SMTP server name smtp-mail.outlook.com SMTP port 587 SMTP encryption STARTTLS Authentication Method OAuth2/Modern Auth

Are what I have (I did have a different SMTP Server name came up - smtp.office365.com - but that doesn't work either)

So ... where is the issue? Is this a bug in the new Thunderbird setup? Something else? I don't know where to go ...

David

Since the latest update a lot of my emails are coming in to my inbox with only numbers in the body of the message ie.

Also with: No from No subject

This particular message is from news .com . au

I tried closing and opening the program but messages like this remain the same

Help!

TIA

This must have been posted about before but I couldn't find anything. And in fact I asked here over a year ago and no one replied. Odd if I'm the only one with this issue.

For a year and few months now, I think since the recipient dropdown started showing grey on some listed entries and white for others, thunderbird seems to be often selecting contacts based on some weird criteria that doesn't work well at all.

For example if I type in Julie, yes I see Julie down the suggested list at position 3 or 4, but positions 1 2 3 seem to be completely random selections from my contacts. Since this change happened I've been trying to be super careful with trusting the position 1 offering, which used to almost always be what I was after, but yesterday I sent and email to the wrong person because I didn't check.

If this is supposed to be some great new feature of tbird (which in itself is great), can someone tell me how to turn if off?

Periodically, groups of emails preview this same message. Why?

--Apple-Mail- Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit

<meta http-equiv="content-type" content="text/html; charset=us-ascii">

--Apple-Mail---

Using Thunderbird 128.3.1esr (64-bit) [snap] Ubuntu 24.04 does not allow editing SMTP server.

Is there an alternate method to edit the SMTP Server information? If so, how?

When in Account Settings, pressing the Edit SMTP Server button generates the following errors in the Error Console:

XML Parsing Error: undefined entity Location: chrome://messenger/content/SmtpServerEdit.xhtml Line Number 155, Column 21: SmtpServerEdit.xhtml:155:21

TypeError: docEl.style is undefined SubDialog.sys.mjs:534:20

Hello,

I have a very very strange behaviour in Thunderbird. For SOME e-mails, the next does not appear and also the message information (like the To:, From:, they also don't appear.

Can you please help me? It only happens in this Thunderbird instance.

Kind regards, Nikos

Hello,

Recently, some emails received have not been displayed, although I cannot understand why. When I click on the received email, I have a series of characters that appear: --_006_PR0P264MB07643BF185E2E2D737CAF999C6B79PR0P264MB0764FRAP_--

I use ThunderBird from my computer. However, when I check my emails via my smartphone and Samsung Email, but emails appear normally.

Thank you in advance for your help