Blasts let event hosts send targeted messages to selected guests by email and SMS.

Before or during the event, filters are RSVP-based:
After the event ends, filters switch to attendance-based:
Note: In a recurring series, once at least one date has been held, Attended and Did Not Attend appear alongside the RSVP filters, based on the dates already held. The filters switch fully to attendance-based after the final date ends.
Note: For in-person events, once you begin marking guests as attended from the Guest List, blasts can target Attended and Did Not Attend guests based on that manual attendance tracking.