Sending one approved template to many opted-in contacts at once, either immediately or at a scheduled time.
A broadcast, also called a campaign, sends the same approved template to a list of contacts, with each person's variables filled in. Unlike a group chat, every recipient gets a private message and their reply comes back only to you.
Broadcasts are how most businesses use WhatsApp for reminders, announcements and offers. They are also where most quality problems start: sending to people who never opted in, or sending too often, leads to blocks and reports.
Start with a clear audience segment, send a test to yourself, schedule for a sensible local time, and watch the results. Have someone ready to answer replies, because a broadcast usually produces a wave of them. In Marichi Talks you send approved templates to opted-in contacts, schedule campaigns, and see sent, delivered, read, replied and failed counts for each one.
A pharmacy in Kitwe sends a monthly refill reminder to contacts tagged 'repeat prescription', scheduled for 9am on the first working day.