WhatsApp is coming to Instasent. This page will grow into full guides when the channel launches.
WhatsApp is coming to Instasent as another messaging channel, alongside SMS and RCS.
One thing to keep in mind already: WhatsApp only lets you message contacts who have opted in first (it's a Meta requirement), so the channel will use the Opt-in consent policy by default. In the meantime, you can set up your other channels from Channels.