subChannelId. Text and custom messages send structured data directly. Media messages send an uploaded file ID, attachment object, or file URI depending on platform.
Text
Send plain text with optional tags, metadata, mentions, and reply parent IDs.
Image
Send image messages with platform-specific file ID, attachment, or URI input.
File
Send generic file attachments.
Video
Send video attachments where the platform SDK supports video message creation.
Audio
Send audio attachments on TypeScript, iOS, and Android.
Custom
Send app-defined JSON-style message payloads.
Parameters
Send A Text Message
Create a text message after resolving the targetsubChannelId.
Return Shapes
Related Topics
Text Message
Add text, tags, metadata, mentions, and replies.
Reply to a Message
Use
parentId to create message replies.Query Messages
Observe sent messages in the target subchannel.
Message Flagging
Add report actions to sent or received messages.