When testing a campaign email, you may receive a popup notification with an error message that states "An error occurred, please try again." The message will look like this:
Check the following to ensure your email test can be sent:
Ensure the custom values being used are valid. Be sure that custom values have proper brackets ###{{ }} (not just 1 {} or more than 2 ##{##{{}}}). For example, ###{{contact.name}} or ###{{contact.city}}.
Check the email address to ensure it follows the proper format such as [email protected]
NOTE: Check out our other article "How to Send a Test Email and SMS" for our best practice recommendations for testing emails in a campaign.