CRM/Mailing/EventMailingEventSubscribecivicrm_mailing_event_subscribeTracks when a (new) contact subscribes to a group by emailtrueCiviMailMailing Opt-In id Mailing Subscribe ID int unsigned true Number id true group_id Group ID int unsigned true FK to Group
civicrm_group
id title Select group_id civicrm_group
id CASCADE contact_id Contact ID int unsigned true FK to Contact contact_id civicrm_contact
id CASCADE hash Mailing Subscribe Hash varchar 255 true Security hash time_stamp Mailing Subscribe Timestamp timestamp CURRENT_TIMESTAMP true When this subscription event occurred.