Channels

WhatsApp Channels are one-way broadcast feeds. Admins post updates and followers receive them without being able to reply.

Get All Channels

const channels = await client.getChannels()
channels.forEach(ch => console.log(ch.name, ch.id._serialized))

Create a Channel

const channel = await client.createChannel('My app Updates')
console.log('Channel created:', channel.id._serialized)

Create a Channel with a Description

const channel = await client.createChannel('My app Updates', {
  description: 'Official updates from my app.',
})

Get a Channel by ID

const channel = await client.getChatById('channel-id@newsletter')

Follow a channel so the app receives its posts:

await client.subscribeToChannel('channel-id@newsletter')

Unsubscribe from a Channel

await client.unsubscribeFromChannel('channel-id@newsletter')

Send a Message to a Channel

Once you have the channel chat object, send to it like any other chat:

const channel = await client.getChatById('channel-id@newsletter')
await channel.sendMessage('Hello, followers!')

Channel publishing workflow

Use a simple publishing pipeline for reliability:

validate target channel ID,
build content payload,
publish,
log success or failure with channel context.

async function publishUpdate(client, channelId, text) {
  const channel = await client.getChatById(channelId)
  await channel.sendMessage(text)
  console.log('Published update to', channelId)
}

Delete a Channel

const channel = await client.getChatById('channel-id@newsletter')
await client.deleteChannel(channel.id._serialized)