[QUESTION] Per-user altnamespace

[Jason Fesler]

> Does anybody see the need or usefulness for allowing users to select
> their own namespace (altnamespace on/off)?  I can implement this pretty
> trivially in v2.2 with a private mailbox annotation on the user's INBOX,
> but I'm not going to bother unless people will use it.

I'd like to see it!  Right now I have to run imapd on an alternate port
for the Mac "mail.app" users.  I'll live without it, but I'd love to see
it come out.