WhatsApp reactions in Public API v1
Released: September 8, 2026
Outbound reactions Added
Section titled “Outbound reactions ”POST /v1/{phone_number_id}/messages now accepts Meta-native reaction
payloads with type: "reaction", a target wamid at
reaction.message_id, and an emoji. Send an empty emoji to remove the
business reaction.
The existing TypeScript SDK messages.send() method includes the reaction
variant in its generated request type.
Inbound reaction webhooks Fixed
Section titled “Inbound reaction webhooks ”Inbound WhatsApp reactions now reach subscribed message.received webhooks.
The payload retains Meta’s reaction.message_id and reaction.emoji shape,
including an empty emoji when the customer removes a reaction.