Mail Header mailformed
Steps to reproduce
- Create a new mail with the sender address as "To" recipient and another address as "Bcc"
- Send it with nextcloud mail
- check the source code of the sent message
Expected behavior
"To" and "Bcc" fields should be filled accordingly in the source code of the sent message
When the same is done by the hosting (all-inkl) Webmailer, the header fields are as expected (see below)

Actual behavior
"To" field is empty, "Bcc" field is not visible at all

Mail app version
1.11.7
Mailserver or service
No response
Operating system
No response
PHP engine version
No response
Web server
No response
Database
No response
Additional info
No response
Hey,
1.11.7 is kinda old. Would you mind to try a newer version?
Hi, thanks for that feedback. The NC update is currently ongoing but the update procedure will not work as expected. I need to investigate there. As soon as there are news, I'll report back
Update to NC 24.0.5 (mail: 1.13.8) done, but the behavior did not change. The source code of the sent message looks still the same as with 1.11.7.
it looks like on stable4.0 works as expected. @florian140807 do you mind testing it again?
Hi there! It looks like this issue hasn’t seen much activity for a while and might need a bit more information to move forward. If we don’t hear back soon, we may close it to keep things organized. Thanks again for your contributions – we really appreciate it!