2026-06-18 Email Settings API
POST /v2/outlook/mailbox/connectnow accepts new optional fields:name(sender name for the mailbox),user_idsandgroup_ids(users and groups the mailbox is available to by default), anddefault_signature_id
POST /v2/outlook/mailbox/connect now accepts new optional fields: name (sender name for the mailbox), user_ids and group_ids (users and groups the mailbox is available to by default), and default_signature_id