IMAP Mailbox Name Attributes

Created

  • 2018-06-14

Last Updated

  • 2026-06-01

Available Formats


IMAP Mailbox Name Attributes

Registration Procedure(s)

  • IETF Review or Expert Review

Expert(s)

  • Barry Leiba, Bron Gondwana

Reference

Available Formats

Attribute Name Description Reference Usage Notes
All All messages RFC 6154
Archive Archived messages RFC 6154
Drafts Messages that are working drafts RFC 6154
Flagged Messages with the \Flagged flag RFC 6154
HasChildren Has accessible child mailboxes RFC 5258 not used by JMAP
HasNoChildren Has no accessible child mailboxes RFC 5258 not used by JMAP
Important Messages deemed important to user RFC 8457
Inbox New mail is delivered here by default. RFC 8621, Section 10.5.1 JMAP only
Junk Messages identified as Spam/Junk RFC 6154
Marked Server has marked the mailbox as "interesting" RFC 3501; RFC 9051 not used by JMAP
Memos Identifies the mailbox where user-created memo messages are stored. RFC 9979
NoInferiors No hierarchy under this name RFC 3501; RFC 9051 not used by JMAP
NonExistent The mailbox name doesn't actually exist RFC 5258 not used by JMAP
Noselect The mailbox is not selectable RFC 3501; RFC 9051 not used by JMAP
Remote The mailbox exists on a remote server RFC 5258 not used by JMAP
Scheduled Identifies the mailbox where messages scheduled to be sent at a later time are stored. RFC 9979
Sent Sent mail RFC 6154
Snoozed Identifies the mailbox where temporarily snoozed messages are stored. RFC 9979
Subscribed The mailbox is subscribed to RFC 5258
Trash Messages the user has discarded RFC 6154
Unmarked No new messages since last select RFC 3501; RFC 9051 not used by JMAP