Hi, I have two e-mail both are sent with Gmail (Google Workspace) one was sent with the multi-send feature the other was sent in the normal mode. The content of both e-mails should be the same. An inline image and some text. The mails sent in multi-send mode don't show the image inline - but as attachment in Thunderbird. (see images) Is this a bug in Thunderbird not displaying the content correctly? This is the e-mail source in multi-send mode (metadata removed) - not displaying correctly: MIME-Version: 1.0 From: Redacted <a@b.c> Date: Fri, 17 Mar 2023 19:09:37 +0100 Message-ID: <redacted> Subject: Multisend To: b@b.c Content-Type: multipart/mixed; boundary="000000000000b1385f05f71c7b73" --000000000000b1385f05f71c7b73 Content-Type: multipart/alternative; boundary="000000000000b1385e05f71c7b71" --000000000000b1385e05f71c7b71 Content-Type: text/plain; charset="UTF-8" [image: image.jpg] Some Text --000000000000b1385e05f71c7b71 Content-Type: text/html; charset="UTF-8" <div dir="ltr"><img src="cid:ii_lfcuu0c90" alt="image.jpg" width="200" height="100"><br><div>Some Text</div></div> --000000000000b1385e05f71c7b71-- --000000000000b1385f05f71c7b73 Content-Type: image/jpeg; name="image.jpg" Content-Disposition: attachment; filename="image.jpg" Content-Transfer-Encoding: base64 Content-ID: <ii_lfcuu0c90> X-Attachment-Id: ii_lfcuu0c90 /9j/4AAQSkZJRgABAQAAAQABAAD/4QAqRXhpZgAASUkqAAgAAAABADEBAgAHAAAAGgAAAAAAAABH ..... --000000000000b1385f05f71c7b73-- ------------------------------------------------------- This is the e-mail source in normal mode - displaying correctly: MIME-Version: 1.0 From: Redacted <a@b.c> Date: Fri, 17 Mar 2023 19:08:38 +0100 Message-ID: <Redacted> Subject: NotMultisend To: b@b.c Content-Type: multipart/related; boundary="0000000000002ae31705f71c78c6" --0000000000002ae31705f71c78c6 Content-Type: multipart/alternative; boundary="0000000000002ae31605f71c78c5" --0000000000002ae31605f71c78c5 Content-Type: text/plain; charset="UTF-8" [image: image.jpg] Some Text --0000000000002ae31605f71c78c5 Content-Type: text/html; charset="UTF-8" <div dir="ltr"><img src="cid:ii_lfcusgws0" alt="image.jpg" width="200" height="100"><br>Some Text</div> --0000000000002ae31605f71c78c5-- --0000000000002ae31705f71c78c6 Content-Type: image/jpeg; name="image.jpg" Content-Disposition: inline; filename="image.jpg" Content-Transfer-Encoding: base64 Content-ID: <ii_lfcusgws0> X-Attachment-Id: ii_lfcusgws0 /9j/4AAQSkZJRgABAQEBLAEsAAD/4QBsRXhpZgAASUkqAAgAAAADADEBAgAHAAAAMgAAABICAwAC ... --0000000000002ae31705f71c78c6--