Emails that are sent to your Users from within the Dashboard come from an email address that has been agreed with you during the onboarding process. This is typically an address on your company's domain. However, if no email address has been set during preparations for going live for any reason, the default email address is: email@example.com
To change this email address, please contact your Customer Success Manager or submit a submit a Support Request.
When sending out emails, it's good practice to always suggest that users either check their junk mail/spam or to add the sending address to their safe list.