Hi CDFM,

Let me help you get your email address up as quickly as possible.

You'll need to configure your email service in the preferences to send transactions in QuickBooks Desktop. It could be that Outlook was not selected as the default email client.

Here's how to set up Outlook in QuickBooks Desktop:

1. From the Edit menu, choose Preferences and select Send Forms.
2. Under My Preferences tab, tick the Web mail radio button and click Add.
3. Fill out the Add Email Info screen and click OK.
4. Click OK to save the Preference.

MICROSOFT OUTLOOK 365 uses outlook.office365.com for the Server and 587 for the port (SSL enabled). You can also check out this article for more information: Set up your email service in QuickBooks Desktop

Reach out to me if there's any way I can be of help.