If you have Marketing Cloud Connect for Sales or Service Cloud, you likely are syncing individual email results back to your CRM after an email

Help from one SFMC Admin to Another
If you have Marketing Cloud Connect for Sales or Service Cloud, you likely are syncing individual email results back to your CRM after an email
Log when they entered and when they exited using Update Contact inside of Journey Builder
Find out about all the data you can access on your Journeys.
Learn how to swap one email for another in a live journey
Keep your Journey Builder Instance clean with this quick and easy tip.
Learn how to use Update Contact to control the number of times a user can get an email.