Confirmation emails go to spam. SMS costs per message and looks like marketing. In much of the world the app a guest already has open is WhatsApp, and a message there gets read within minutes.
Vestibel routes catalogue events — a confirmation, a reminder, a request update — to WhatsApp per event, so a property can send booking confirmations there and leave marketing on email.
Messages come from the property's own number, so the guest recognises the sender and can reply to a human.
The copy is the property's own. Every event has an editable template per channel, so the same booking confirmation reads in the property's voice on WhatsApp, email and SMS without being written three times.