Hello, @NHM.

There are several reasons why you're QuickBooks is not responding while sending an email. Let's perform some troubleshooting steps to fix this error.

1. Make sure that QuickBooks isn’t running as administrator.
2. Verify if your email preference is set correctly in QuickBooks.
3. Set your email preference in Internet Explorer correctly.
4. Test and repair your MAP132.dll by emailing a document from Microsoft Word.
5. Reinstall QuickBooks using Clean Install.
6.  Lastly, you may consult with your IT professional so you'll be guided properly in repairing Outlook.

For more detailed instructions, you may refer to this article: QuickBooks is unable to send your emails to Outlook.

Let's do the following steps to isolate this concern for any possible data damage:

1. Create a backup of the QuickBooks Desktop company file
2. Repair QuickBooks Desktop.
   1. Click Start.
   2. Select Control Panel.
   3. Go to Programs and Features.
   4. Choose QuickBooks.
      1. Click Uninstall/Change.
      2. Choose Continue, then Next.
      3. Select Repair, then click Next.
3. Once completed, ensure to download the latest QuickBooks release when opening the program.

For more insights, you may check these articles:

• QuickBooks will not accept my web mail password.

• QuickBooks Will Not Accept My WebMail Password.

• Resolve QuickBooks Desktop performance issues: Manage your data file

Keep me posted if you have other questions. I'm just a few clicks away.