GatorLeads allows you to delete a contact and it's history from it's system. This conforms to the GDPR Right To Be Forgotten (RTBF) process.
NB Be aware that GatorMail and GatorLeads both have a delete function, if your accounts are integrated then a contact delete in GatorMail will cascade a delete automatically to GatorLeads for you.
For standalone function in GatorLeads, go to the menu option:
Reporting/Reports/Contact Search (GDPR)
The Delete or RTBF button will delete all the contacts history in GatorLeads.
NB Be aware that if you send that person another email through GatorMail, then the contact will come back as a named contact in any website tracking.