In detail
WhatsApp messaging limits govern how many unique customers your business number can proactively message — start a business-initiated conversation with — in a rolling 24-hour period. They exist to protect users from spam and to reward businesses that message responsibly.
A new, unverified number starts at 250 unique customers per day. Once you complete business verification and start sending quality messages, your number can move up the tiers: 2,000, then 10,000, then 100,000, and finally unlimited unique customers per rolling 24 hours. Meta raises your tier automatically when you message enough people at good quality; it can also lower it if quality drops.
Two things drive advancement: volume and quality. To reach the next tier you generally need to message toward your current limit and maintain a healthy quality rating (green/medium, not red). Low quality — from blocks, reports or poor opt-in — can stall or reverse your climb.
Crucially, only business-initiated conversations count against the limit. Replies you send inside an open 24-hour customer service window, and messages to customers who messaged you first, do not consume your daily cap. So a support-heavy account rarely hits limits; a broadcast-heavy account should plan tier growth before big campaigns.
If you expect to send to more customers than your tier allows, warm up gradually, keep opt-in clean, and let quality carry you upward rather than trying to blast at once.
Key points
- Limits cap unique customers you can start conversations with per rolling 24h.
- Tiers: 250 (unverified) → 2K → 10K → 100K → unlimited.
- Advancement needs both volume toward your cap and a good quality rating.
- Only business-initiated conversations count; replies in open windows do not.
- Verification unlocks tier growth; low quality can stall or reverse it.
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