Support for JMAP mailbox roles

[EliRibble]

The JMAP mail spec talks about mailboxes having "roles". As far as I can tell, Stalwart does provide a mailbox with an inbox role, which is one of the several supported roles. From my reading of the JMAP spec I don't see an explicit way to support either creating mailboxes with a specific role, nor a way to modify mailboxes to set a role.

I assume this means that the mail server itself is supposed to provide special mailboxes for each supported role, then rely on the user software to rename them to have a localized name.

First, thoughts? Am I missing something from the spec?
Second, if y'all agree with my take on it, would you accept a PR to create these special role-based mailboxes?

[EliRibble]

Okay, to be clear, looks like at least in my install I have the following mailbox roles represented:

• inbox
• trash
• junk
• drafts
• sent

There are still quite a few others, like archive (that I'm specifically interested in).

[mdecimus]

You can assign roles to mailboxes using a Mailbox/set request. However note that any given role can be assigned only to a single mailbox. Additionally you can only use IANA assigned role names as per the JMAP specs.

[EliRibble]

I see, so I've misread the standard. I hadn't realized that the "Mailbox/set" method permitted all of the data fields in section 2 as well as the data fields in section 2.5. I was able to test creating a mailbox in Stalwart with jmapc, the Python library I'm using, and set the role at creation time to archive and it worked just fine.

[bcspragu]

A related thought: It would be nice to be able to configure the set of mailboxes/roles that get created at account creation. As Eli noted, I'd like to have the archive mailbox created at account creation as well, instead of checking for it in the client and creating it on-demand

[mdecimus]

Feel free to open an enhancement request for this.

[bcspragu]

Good call, done: #290