Event updates and reminders

When a host changes the time, updates details, or cancels, everyone on the guest list is notified. Members get it in-app (and by push, email, or text, depending on their notification settings). Link guests who left a phone number get a text; those who left an email get it by email.

Hosts can also send an announcement as a text blast, for the day-of logistics that can't wait (a gate code, a room change). Blasts are capped at three per event, and replying STOP always opts you out.

Everyone who's going also gets a reminder as the event approaches, so nothing sneaks up on you.

On an event that runs several nights, each night reminds its own people, at that night's time. Answer for the Saturday and you hear about the Saturday.