WhatsApp broadcast messages: rules, limits and best practices

Broadcasting on the WhatsApp Business API is powerful — and easy to get wrong in ways that get your number throttled or flagged. Done right, it's one of the highest-engagement channels there is. Here are the rules and the habits that keep it that way.

Broadcasts are template messages

A broadcast is business-initiated, so each message is an approved template — usually a marketing or utility one. You cannot broadcast free-form text. Write the template, get it approved, then send it to your list.

Only message people who opted in

This is non-negotiable, both for policy and for results. Sending to people who didn't agree to hear from you tanks your quality rating and invites blocks and reports. Collect clear opt-in, and honour opt-out immediately — see our opt-in / opt-out compliance guide.

Quality rating and messaging limits

Meta scores each number's quality rating (green/yellow/red) based on how recipients react — blocks and “report” taps drag it down. Your rating and history set your messaging limit (how many unique customers you can message per day), which grows as you send responsibly. Blast bad lists and you'll be throttled; send relevant messages to opted-in people and your limit climbs.

Best practices that actually move the needle

• Segment. Relevance beats reach. A smaller, well-targeted send outperforms a spray.
• Lead with value. Utility and genuinely useful offers get engagement; pure hype gets blocks.
• Make opting out easy. It protects your quality rating far more than it costs you.
• Warm up. Ramp volume gradually on a new number rather than a day-one blast.
• Mind pacing. Respect your per-minute send rate so you don't hit limits mid-campaign.

How walpio makes broadcasts safe

In walpio, a broadcast sends your approved template to a list from your dashboard — and it automatically skips contacts who've opted out (enforced server-side, across all your numbers), respects your per-minute rate, and reports exactly who received it and who didn't. You get the reach without the foot-guns.