I use Salesforce Data in all my Journeys and today I have realized that although in the tracking information there is no fail in History even though there are some failed emails.
I have different contacts from Salesforce which have received single emails but each time they access to a journey and the system tried to send them an email, it fails. I have tried to Preview and Test the email with Journey Data Extension (selecting the contact) and all Personalizations Strings are working properly so I don't know why the email fails.
Can somebody help me to understand why the email failed? Is there a way to know why the email send is failed?