Can a guest stop receiving WhatsApp messages from me?

The consent responsibility sits with you as the photographer — Snaptide's guidance is to collect guest phone numbers at booking time and confirm WhatsApp consent before adding people. Guests who didn't consent shouldn't be getting messages, full stop. The platform's own best-practice list says exactly this: gather numbers with consent, respect it, and use the album privacy controls so notification links only reach authorized guests. A guest who never agreed to WhatsApp shouldn't receive one — that's on you to manage.