Send & Receive Issues

Fix Apple Mail Messages Disappearing When Sent to Office 365

Nimra MalikNimra Malik Oct 12, 2026 868 views

Question details

Users experience emails sent from the Apple Mail app to Microsoft 365 recipients failing to arrive and vanishing from both Sent and Drafts folders.

How to Fix Apple Mail Messages Disappearing When Sent to Office 365
Product
Microsoft 365 / Apple Mail
Device & OS
not provided
Scenario
Sending emails from Apple's native Mail app to Microsoft 365 recipients.
Observed behavior
Messages appear to be sent but do not reach the recipient's server and disappear completely without being saved in the Sent or Drafts folders.
Before you start

Ensure you have a stable internet connection and verify the recipient's email address. If you are an IT administrator, ensure you have access to the Exchange Admin Center before proceeding.

Solution 1Recommended

Run a Message Trace in Exchange Admin Center

Use the Microsoft 365 admin center to determine if the message ever reached the recipient's server.

This method requires administrator privileges. It allows you to track the exact mail flow and pinpoint whether the email was dropped by the server, rejected, or delivered successfully.

1
Access the Exchange Admin Center

Log in to the Microsoft 365 admin center with administrator credentials and navigate to the Exchange admin center.

2
Navigate to Message Trace

In the left-hand menu, go to Mail flow, then select Message trace.

3
Start a Trace

Click on 'Start a trace'. Enter the sender's email address or the recipient's address in the respective fields.

4
Search and Review

Set the appropriate time range for when the email was sent, and click search to view the detailed routing results.

Run a Message Trace in Exchange Admin Center
Administrator Access Required: Only Microsoft 365 administrators can access the Exchange admin center to run a message trace. If you are a standard user, you will need to contact your IT department.
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Frequently Asked Questions

Why do emails disappear from Apple Mail without going to the Sent folder?

This usually happens due to synchronization issues between the native Apple Mail app and the Exchange server. If the server drops the connection before the sync completes, the email may fail to send and fail to save locally.

Can standard users run a message trace in Microsoft 365?

No, running a message trace requires administrator privileges. You must contact your Microsoft 365 IT administrator to perform this action in the Exchange Admin Center.

How can I fix Apple Mail not syncing with my Office 365 account?

Try removing the email account from your Apple device settings and re-adding it using the 'Microsoft Exchange' option. Alternatively, use the official Outlook mobile app for a more reliable connection.