"Send HTML mail" is sending allways attachment.dat empty file (even when no attachment is provided in the form)

I have two very similar sites.
One site has the problem but another site is fine.
Can't understand the problem yet.

Patch works for me. Thanks.

This works as expected
3rd report that patch works (together with akalam)
should be committed

This issue may be related to #2553815: mail.css imported font generates empty attachment.

The related issue solves this in a different way (mail.css imported font generates empty attachment).
The fix in the related issue is committed on 7.x-1.x branch (develop).

Moved the status of this issue back to "Needs Review".

Now this should be tested again:
- Is the issue fixed when switching to 7.x-1.x -> if that's the case, this issue should go to "Closed (duplicate)" or "Closed (outdated)".
- If the issue is only fixed with the patch in this issue, then we should move it back to RTBC.

This patch fixed the issue for me in '7.x-1.0-beta4'.
Below is my use case.
- I have a simplenews node to which more than one view is attached as eva
- Use mail-system -- mimemail to send the above node as an email to subscribers
- Use a simplenews scheduler to make revisions of the above node and carry on sending emails
at regular (preset) intervals.

I too faced the same issue, but by creating mail.css file in theme folder resolved my issue.

This is not related to the mail.css issue. Can confirm that this patched fixed the problem for me with the latest version.

For me, Webform + Mimemail (with or without image/attachments) always sends a empty .dat file.

I attempted the mail.css fix, changing settings within webform/mimemail/mailsystem to match other resolved issues and it didn't work. Finally came back around to trying this patch (last ditch effort) and it worked. No errors other problems have come up.

I think the issue should be reopened and patch applied.

Can someone maintainer reopen the issue and push the commit?

The #2 patch given by akalam works like a charm. It would be great if it is committed to the mimemail module.

Re-opening for discussion. If this is to be committed we'd also need a test written.

Setting to "Needs work" as a test needs to be provided.

Marked #2759923: How to remove dat file in email? as a duplicate.

Marked #3021000: Import font generates attachment when url starts with // as a duplicate.

We need a re-roll of the patch to apply to current HEAD and to fix the coding standards violations, and we really do need a test to both demonstrate the problem and prove the solution.

I have tried the patch but it did not solve this issue which I am also having. I wonder whether anyone has any more advice on a way forward?