Using Outlook for iOS in business environments for email and scheduling
same here with 2 separate Gmail accounts. i noticed to day after deleting the ap and reinstalling AGAIN that it seems to work fine until I open Outlook on my computer. then the mobile sent messages change back to drafts.
both of my Gmail accounts sync differently (one uses GSync and is a work account, and one is a basic free gmail account using IMAP).
both addresses have the same result.