How are they handled in Mindmatrix?
Hard & Soft bounces: As soon as your email is sent, if Mindmatrix receives a bounce back, it is marked with the bounce type on the contact record.
Unsubscribes: There is an unsubscribe link in the footer of every email that is sent, in accordance with spam policies. When a contact clicks to unsubscribe, they are marked in Mindmatrix as unsubscribe. You can view their subscription status in their report.
Email unsubscribe automatic footer
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Contact card subscription status