Channel Direct Messages

Bots can reply to messages sent through a channel’s direct messages.

Replying to a Direct Message

Incoming direct messages have a directMessagesTopicId. Context reply methods reuse it automatically.

client.on("message", async (ctx) => {
  if (ctx.msg.directMessagesTopicId === undefined) {
    return;
  }

  await ctx.reply("Thanks for contacting us.");
});

When sending outside an update handler, pass the topic ID explicitly.

await client.sendMessage(chatId, "Thanks for contacting us.", {
  directMessagesTopicId,
});