On Tue, 1 Mar 2022, Jan Bramkamp wrote:

...

One of my Apple Mail users recently complained his mail reader couldn't create sub-folders -- he could only create top-level folders. Playing around with this, I discovered that I could create folders ( as opposed to mialboxes) *if* I specified mailbox name with a trailing slash.

Has anyone come across this? Is this related to

https://doc.dovecot.org/configuration_manual/mail_location/mbox/mboxchildfolders/ 

Which path separators did were used?

'/' (maps directly to filesystem pathname).

The user stated that it behaved "normally" before where folders and mailboxes were handled without fuss. Thunderbird also has a setting which hints the client as to whether whether Maildir or MBOX was being used by forbidding creating mailboxes that also contained other mailboxes.

I guess I'm asking whether the Apple mail client now has a similar control or it's up to the user to figure it all out.

Joseph Tam <jtam.home@gmail.com>