CRM/Mailing/EventMailingEventBouncecivicrm_mailing_event_bounceTracks when and why an email bounced.trueCiviMailMailings that failed to reach the inbox of the recipient. id int unsigned true ID Number id true event_queue_id int unsigned true FK to EventQueue Recipient event_queue_id civicrm_mailing_event_queue id CASCADE bounce_type_id int unsigned What type of bounce was it? civicrm_mailing_bounce_type id name Bounce Type Select bounce_reason varchar 255 The reason the email bounced. time_stamp timestamp CURRENT_TIMESTAMP true When this bounce event occurred.