Application

Permission ID Purpose Description
MailboxSettings.Read 40f97065-369a-49f4-947c-6a255697ae91 Read all user mailbox settings Allows the app to read user’s mailbox settings without a signed-in user. Does not include permission to send mail.
MailboxSettings.ReadWrite 6931bccd-447a-43d1-b442-00a195474933 Read and write all user mailbox settings Allows the app to create, read, update, and delete user’s mailbox settings without a signed-in user. Does not include permission to send mail.

Delegated

Permission ID Purpose Description
MailboxSettings.Read 87f447af-9fa4-4c32-9dfa-4a57a73d18ce Read user mailbox settings Allows the app to the read user’s mailbox settings. Does not include permission to send mail.
MailboxSettings.ReadWrite 818c620a-27a9-40bd-a6a5-d96f7d610b4b Read and write user mailbox settings Allows the app to create, read, update, and delete user’s mailbox settings. Does not include permission to send mail.