This article explains what Non-Delivery Reports (NDRs) are, why they occur, and how to understand and resolve common email delivery errors at USNH.

This article provides answers to frequently asked questions about your USNH Outlook email account and associated email addresses.

This article details how to find, view, and copy email headers in Microsoft Outlook on the Web.

If your Outlook is behaving oddly, turning Cached Exchange Mode off and then back on can sometimes fix the problem. This article details how to turn off Cached Exchange Mode in the Microsoft Outlook Desktop App for Windows as a way to clear the Outlook cache.

This article describes steps to try if your conditional formatting rules in the Microsoft Outlook Desktop App for Windows suddenly stop working.

This article explains how to update your Mac Desktop Outlook App for the USNH unified M365 environment. There are two parts to the process, the first is removing your old campus-based account, and the second is adding your account to the M365 environment.

This article details how to import, export, or open an Outlook Data File (.pst file).

This article provides some common fixes for Outlook Desktop App for both Windows and Mac users.

This article details the troubleshooting steps to use if any features are unexpectedly grayed out in the Outlook Desktop App for MacOS.

This article will cover the Frequently Asked Questions with syncing your Outlook calendar with Navigate.

As you prepare to send an email message in Outlook, you may see a warning that "The following recipient is outside your organization".

This warning helps to prevent accidental sharing of sensitive information and encourages a quick review of your message and recipient email address(es) before hitting Send. In August 2024, ET&S enabled the External Recipient MailTip feature in Outlook for enhanced security and visibility of external mail recipients.

Information about the warning bar at the top of external email coming into USNH mailboxes - "CAUTION: This email originated from outside of the University System. Do not click links or open attachments unless you recognize the sender and know the content is safe."

This article describes how to send an email from a Proxy Address in Microsoft 365.

This article contains a links leading to Outlook support pages, training, and documentation from Microsoft.

This article explains how to set your default email response in the Outlook Web App to reply only to the sender of the original email (Reply), or to everyone listed in the To and Cc fields (Reply all). Your selected default setting appears on the top of the drop-down response menu in the email message window.