Hi all,
Two things:
1. Microsoft is retiring/blocking EWS for Microsoft 365 and requiring modern OAuth access through Microsoft Graph. Aqua Mail must use Graph to keep mail sync working securely. Admin approval is controlled by your company tenant, and Aqua Mail cannot bypass it.
2. At the moment we do not have a confirmed timeframe for shared mailbox support in the new Microsoft Graph implementation. We are aware of the issue, and it is something we want to add in the next update, but I don’t want to give you an unreliable date.
Main Microsoft 365 mailbox support is being maintained. The reason for the recent change is exactly because Microsoft is moving away from the older EWS method and toward Microsoft Graph. Aqua Mail’s new Microsoft 365 setup is intended to keep normal/licensed mailboxes working with Microsoft’s newer requirements.
For your shared mailboxes, converting them to normal licensed mailboxes may work, because they would then have their own Microsoft 365 login and could be added as separate main accounts in Aqua Mail. Your IT admin would need to confirm the licensing, permissions, and any effect on sending/receiving rules before changing them.
