[Evolution] Explanation of editor settings

["@web.de" <pfeifer_s web de>]

Dear members,

Unfortunately, the explanation in the help content is too general:

I do not understand what the setting "folder preferred to sending
account" in EDITOR PREFERENCES/SENDING ACCOUT is exactly doing or not
(if unselected).

Could you describe the mechanism how the sending account is detected in
comparison to these settings. Especially 'Use as folder' seems
confusing to me.

By the way, what's the standard settings here?

Best regards,
Sebastian