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Send a URL as a link part and iMessage shows it as a preview card. Over RCS and SMS, how the link looks depends on the recipient’s phone.

Constraints

  • https:// only, up to 2,048 characters.
  • The link goes alone. A link part must be the only part in its message. Send any text as a separate message.
  • Not before the contact replies. Until the person replies to your number, links are rejected, in a link part or inside text. See Sending Rules.
  • Follow-ups only. POST /v1/chats never accepts a link part (FIRST_MESSAGE_LINK_NOT_ALLOWED). Send it into the chat.

Sending Messages

Every part type and how to send it.

Sending Rules

What you can send before the contact replies.