What do we do when we do not speak & read German? Though let me guess, this is about mail account identities, like the Thunderbird has it, right? If yes, then this is close to bug #237917 or bug #321016.

This is about server-side mail aliases, and by using an account with
 Receiving=None
and
 Sending=Use the same settings as for the main account
you can send mail from the alias address without having to change settings.
Maybe not important enough for the docs though now that I think about it.
Not on my list for 3.4.

I'm going to try to do away with these types of accounts for 3.6 and allow users to manage storage configuration, identity configuration and transport configuration and individual entities.

*as individual entities

https://fedoraproject.org/wiki/EmailAliases#Evolution_Client

Also see bug #605416.

*** Bug 784662 has been marked as a duplicate of this bug. ***

Worth noting that https://bugzilla.gnome.org/show_bug.cgi?id=784662 is about the new aliases feature in 3.24, which doesn't have its expected format documented except in the implemenation bug for that feature.

So it's not a duplicate exactly; more a bug to document the new feature that replaces the use case mentioned here.

Your patch to improve the documentation is welcome. :) See https://wiki.gnome.org/Git/Developers and https://git.gnome.org/browse/evolution/tree/help/C/

Also see bug 772572 which got fixed for 3.26

Doesn't feel like a common request hence boldly declining