How to check the unsubscribed, bounce and marked spam emails

A guide on how to check for the contacts who have unsubscribed, marked spam or bounced

If your contacts have unsubscribed from your emails, marked your emails as spam or the emails have bounced from the id's, then it is best practice not to send these contacts any emails in the future.

You can check all the contacts who have done so by going to Audience > Contacts