Guests can end up on the unsubscribe list in multiple ways, but the most common is by unsubscribing from Event Farm emails. To be CAN-SPAM compliant - the laws which regulate mass mailers like Event Farm - only the recipient can request to be removed from the unsubscribe list. Our clients cannot request their guests be removed from the unsubscribe list.
In order to be removed from the unsubscribe list, the affected recipient must send an email from their unsubscribed email address to support@eventfarm.com - the request should ask us to confirm they are on the unsubscribe list, and if so, to please remove them. This process typically takes a few business days, and we will notify the recipient when they have been removed from the unsubscribe list.