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.

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Getting Started

A guide to sending your first email campaign
Key Concepts

A brief overview of key concepts in Direct Mail
Mailing List Requirements

Make sure your list can be used with Direct Mail

Help Documentation

Messages

How to create and edit your email content
Contacts

How to manage your mailing list
Sending Campaigns

How to send your email campaign
Campaign Reports

How to review and interpret your campaign reports
Forms

How to create email signup and other web forms
Cloud Sync and Collaboration

How to access your project from other devices and collaborate with colleagues
Automation

How to create automated email campaigns that send themselves
Integrations

How to connect Direct Mail to other apps and services you use
Managing Your Accounts and Data

How to manage your Direct Mail account, link to other accounts, and manage your data
Purchasing and Billing

How to change your plan, update billing information, and answers to related questions
Compliance

How to respond to data requests and other compliance information
Troubleshooting

Suggestions for resolving issues
API

Use the API to programmatically access and update your Direct Mail projects
Old Versions of Direct Mail

Documentation for Direct Mail 6 and older