Service Alert: Microsoft Email Delivery Delays — November 12-13, 2026

Microsoft is currently experiencing a widespread outage affecting Outlook, Exchange Online, and other Microsoft 365 services. As a result, emails sent to recipients using these services may be delayed until Microsoft resolves the issue.

If your mailing list includes a significant number of Microsoft email users, you may notice temporarily lower open and click rates while deliveries are delayed.

There is no need to resend your campaign. Direct Mail will automatically retry temporarily delayed deliveries until Microsoft's servers are accepting mail again. No action is required on your part.

For updates, visit Microsoft's Service Status page or Microsoft 365 Status on X. We'll also update this notice as more information becomes available.

Documentation d'aide 〉Anciennes versions de Direct Mail 〉Tests de rendu 〉

Flagging and re-testing email clients

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Cet article d'aide concerne une ancienne version de Direct Mail.

The flag icon is a button you can click to mark a design test screenshot as "flagged." The flag icon does not have special meaning to Direct Mail, but you can use it to call attention to a screenshot that you may want to review or re-test later.

flag.jpg flag-item.jpg

Direct Mail does provide an easy way to re-test email clients that you have flagged. You can re-test flagged email clients by clicking the re-test button in the design test window toolbar.

dt-retest.jpg

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