Do you still see this when using a newer versION?
If you do, please email me a sample.

Your participation is needed for progress to be made, so please do not abandon your bug report(s). In particular, we need a testcase/sample

In response to your reply 16 days ago I've already mailed you an EML file. What else do you need? I could set you on the recipient list and let the server generate a report. That's as close as you can get to real life.

Wayne forwarded me the e-mail, sorry about the delay. The message has an incorrect MIME structure. TB shows all the images as attachments since the message is Content-Type: multipart/mixed; - Use an editor to change this to Content-Type: multipart/related; and all is well.

Usually we have it the other way around: Attachments sit in a multipart/related part, here we have an embedded image in a multipart/mixed. Sigh, maybe one day Micro$oft will start reading the international specs :-(

One day we'll rework our MIME parser and then we won't pay any attention to any content type but just piece the puzzle together.

Hi!

I have the same issue. I will try to transmit this bug to Microsoft too, but I don't have big hopes it will get through - is where anyway one could help out with this issue?

Thanks!

Philipp

Not sure if it helps, but here is a relevant forums thread:
https://www.thunderbird-mail.de/forum/thread/84115

The mails from Windows Server have the main HTML part attached as the first attachment. All grafics were attached as the following attachments. The correct multipart declaration should be "multipart/related", but the generated mails use the false "multipart/mixed" declaration.

Hi Alex, the link you posted has been started by me actualy.
Here you find the issue also started be me and replyed by someone called "Thunderbird Mail DE":
https://social.technet.microsoft.com/Forums/en-US/42307afc-6dde-4d5b-832f-f8db8ed6e39b/windows-server-2016-heath-report-email-formating-on-thunderbird?forum=ws2016

I think now we have cros referenced all 3 topics here, in the german TB Forum and the MS Forum...

Lets see who is the fastest to find a solution...

I am seeing something similar in replies from a Microsoft server, only for embedded images which are not displayed, only a link like [cid:image002.png@01D7CC20.8025CE20] which actually links to the image, so it's still there. The link: mailbox:///archive/.thunderbird/i3dh11n1.default/Mail/Local%20Folders/archive?number=49&part=1.3&filename=image002.png

This was already reported as bug 61815.