Hello @DemingLunaCountyChamberofCommerce ,
When entering your contacts, are you uploading them via file, adding them one-by-one, or adding them via the type/paste multiple method?
If you're pasting in the contacts' info, are you right-click pasting or CTRL+V / CMD+V pasting them? Are there any that you've typed / pasted in that contain extra spaces or other erroneous info that might affect the email address?