What Microsoft permissions does Deskhero ask for when I connect a mailbox, and why?

Five permissions are requested: 1) "Read & manage your mailbox" (Mail.ReadWrite) to import messages, mark them read or archived, and keep ticket status in sync. 2) "Send email from your address" (Mail.Send) so users can reply or send messages directly from your address. 3) "Read & manage shared mailboxes" (Mail.ReadWrite.Shared) for team addresses such as support@ or info@. 4) "Send email from shared mailboxes" (Mail.Send.Shared) so replies can come from a shared address instead of a personal one. 5) "Stay connected in the background" (offline_access) so syncing continues even if you are signed out.