WhatsApp messaging limits: how the tiers actually work

WhatsApp Business messaging limits cap the number of unique customers a business can initiate conversations with during a rolling 24-hour period, primarily affecting outbound marketing and notification messages rather than replies within active service windows. Limits commonly progress through tiers from 250 to 100,000 customers and beyond, but advancement depends on both meaningful use of the current allowance and a strong quality rating driven by customer feedback such as blocks, spam reports, and engagement; higher spending cannot purchase greater capacity. Since October 2025, limits are shared across all WhatsApp numbers in a Meta Business Portfolio, requiring businesses to plan capacity across marketing and transactional use cases rather than adding numbers to increase it. The text distinguishes daily conversation limits from throughput limits, which restrict messages per second and require paced sending and backoff strategies for rate errors. It recommends early business verification, gradual warming with expected and requested messages, audience segmentation, continuous monitoring of quality and consumption, automated queuing and retries for rejected sends, and fallback channels for critical communications.

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