As stated in the email, this email was sent for one of two reasons:
- You were sending to an empty contact list, or a contact list that contained non-employees
- You were sending to an email address that is not set, or was deleted
This email will also specify the workflow that sent the email, the account that workflow is in, and the contact list or email address that caused the error.
In order to set the proper sales list or email for the workflow step to send to, you must navigate to that workflow and edit the properties of that step.
For a contact list:
For an email address:
The next step is to make sure the step is emailing to a valid list or email. This process is explained in the following support articles: