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The Add or Remove a Reaction block lives in the Messages palette category. Add or remove an emoji reaction on a message.

What it does

Adds or removes an emoji reaction on a message.

Configuration

Open the block in the builder sidebar to configure these fields.

action

Type: string. Required. Accepted values: add, remove.

emoji

Type: string. Required. Unicode emoji or custom emoji syntax.

message_id

Type: block-reference. Required. Target message.

See also

  • Messages — Browse all blocks in the Messages category.
Last modified on June 6, 2026