Set up Apple Mail on iOS devices

The use of Apple Mail and Calendar with Exchange Online often leads to unpredictable bugs and unintended behaviour. For this reason, we strongly recommend using iOS Outlook or Outlook Web Access.

If you are not going to use Outlook, where possible, please upgrade iOS to the latest version to minimise any unexpected behaviour when using Exchange Online email.

Basic Exchange Online productivity and collaboration functionality is provided natively by iOS, but please be aware that:

1. Mail may take a long time to index emails for large mailboxes after migration or to complete bulk email moves between mailboxes.
2. Shared Mailboxes are not supported by iOS Mail.
3. Editing Calendar entries may lead to duplicated events.
4. Calendar may not exhibit the correct behaviour when cancelling an event in a series.
5. There is minimal integration with other Microsoft 365 services such as Teams.
6. Additional functionality provided by Microsoft 365 may not be available in iOS native applications.