File attachments not working

I changed the logic to add the attachments conform to what the webform module returns and also what the symfony_mailer module uses. Here also a patch file.

I also uploaded attachments larger than 3MB without a problem. Maybe the Graph mail documentation isn't accurate?

Tested and confirm it works now. See screenshot of a testmail submitted through a webform submission handler.

It seems drupal.org suddenly got commit issues. I will try again in 40 minutes.

Automatically closed - issue fixed for 2 weeks with no activity.