I am using my regular mail address for DC as well. To make it more convenient all the DC mails should be transferred to a dedicated DeltaChat directory residing within the Maildir folder.
Up to now even though I chose the option “Move to DeltaChat folder automatically” the messages were stuck in the general INBOX folder.
Using Thunderbird I created the DeltaChat folder by hand, and after that the DC mails are sent there automatically.
Now I wonder, will DC (normally!) create a folder DeltaChat in Maildir?
BTW the mail server is a combination of postfix+dovecot.