Based on our records, Office 365 delivered your message in less than 5 minutes from the time it was sent. Delivered time: ...

Based on our records, Office 365 delivered your message in less than 5 minutes from the time it was sent.

Delivered time: {DeliveryTime}

If messages are taking longer than 5 minutes to arrive in the recipient's Inbox, the delay might be happening due to a connection problem with their email client.

To see the full log of how Office 365 processed your message, use Message Trace.

Contacting support won't solve this issue if it's due to a problem that's happening outside the Office 365 service.