User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 Build Identifier: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.5) Gecko/20041107 Firefox/1.0 If I compose an email in Thunderbird, attach a plain text file (extension does not necessarily have to be .txt), the recipient will receive the email with the attachment inline with no indication of an attachment in the message. This has been tested with the recipient using Eudora 6.1, Apple Mail 1.3.9, MailSmith. When I look in my sent folder in Thunderbird, I see the message formatted as I have configured my Thunderbird, which is do not show attachments inline, and I do see the message has my attachment. I have worked with the users of Eudora and Apple Mail to see if we can adjust their settings to not view the attachments inline, but the problem is that they get the message with no information of there being an attachment, so this I presume is a problem with the header of the email when created in Thunderbird. It's very inconvenient if this is meant to be a feature because: 1) If I want to send inline text, then I will simply copy and paste it into my message. 2) If I want to send a text file as an attachment, then there's probably a pretty good reason for that, such as needing to keep that attachment as seperate file. Of course, I could zip the attachment, then send it, but... sometimes the files are small, and it takes time. It's just not very efficient. Is there a way for me to tell Thunderbird to send attachments as attachments always and not send my messages as a mixed content type? Reproducible: Always Steps to Reproduce: 1.Compose new message 2.Attach plain text file 3.Send 4.Receive message in either Eudora or Apple Mail 5.Received message has no indication of an attachment.. everything's inline. Actual Results: Intended attachments appear inline. Expected Results: If I attach a file to a message, Thunderbird should keep the attachment an attachment and not send it inline. I think Thunderbird currently accomplishes this by setting the content type to a mixed content type. If I set all messages to be composed as plain text, then the content type should b plain text-flowed with a flag in the header of there being an attachment.
Please note that this is NOT about forwarding messages, which Thunderbird has a configuration to allow for the forwarded message to either be inline or as an attachment.
See workaround at bug 65794 comment 11. *** This bug has been marked as a duplicate of 65794 ***