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Meta caps how many unique recipients each WhatsApp phone number can message in a rolling 24-hour window. The cap depends on the messaging tier assigned to that number, ranging from 250 unique recipients per day at Tier 1 up to unlimited at Tier 4. This page explains how the tiers work, what triggers a tier change, and how to avoid being capped mid-campaign.

The four tiers

TierUnique recipients per 24hWhen you get it
Tier 1250Default for every new phone number
Tier 21,000Automatic graduation when criteria are met
Tier 310,000Automatic graduation when criteria are met
Tier 4100,000Automatic graduation when criteria are met
UnlimitedUnlimitedAvailable to verified accounts in good standing
“Unique recipients per 24 hours” means: if you message 250 different contacts in a day at Tier 1, you cannot message a 251st until 24 hours after the first message. Messaging the same contact twice in the window does not count as two recipients, just one.

What counts toward the limit

Only business-initiated template messages count. Replies inside the 24-hour customer service window (where the customer has messaged you first) do not count toward the tier limit — those are essentially unlimited. This matters for campaign planning: a typical outbound nurture pulse counts, but the follow-up Q&A conversation that happens after a customer replies does not.

How to graduate to the next tier

Meta evaluates each phone number daily. To graduate from your current tier to the next, the number must:
  1. Have sent template messages to at least 1,000 unique users in the last 7 days if you’re on Tier 1, or higher counts for higher tiers
  2. Hold a Green or Yellow quality rating — a Red rating blocks tier upgrades and can trigger a downgrade
  3. Not be flagged for policy violations in the same period
Meta usually upgrades automatically within 24 hours of meeting all three. There is no manual request to graduate; the system handles it.

Why graduation is sometimes slow

New accounts often graduate Tier 1 → Tier 2 within days of starting consistent outreach, then stall before Tier 3 because:
  • Block rate is too high. Even at Tier 2, sending 1,000 messages a day to a list with even 1% block rate causes Meta to pause graduation. See quality score.
  • Volume isn’t consistent. Sending 1,000 messages in one day and zero for six days won’t graduate you the way 200 per day for seven days will.
  • Recipient mix is too narrow. Repeatedly messaging the same small audience doesn’t show Meta you can reach unique users at higher volumes.

How to avoid hitting the limit mid-campaign

Before you launch, check Settings → Meta in Flowella for your current tier. If your list is bigger than the tier allows, either:
  • Spread the campaign over multiple days. A 5,000-recipient campaign on Tier 2 needs at least 5 days at 1,000 per day.
  • Use a higher-tier number. If you have multiple phone numbers, send from the one with the highest tier.
  • Trim the list to fit the tier. Better to land cleanly with 1,000 well-targeted recipients than queue 5,000 and have 4,000 sit waiting.
A brand-new phone number starts at Tier 1 with no quality history. Don’t immediately blast 250 messages on day one to a cold list — if the response is poor, you’ll get a Yellow rating and graduation stalls.Start small: 50–100 messages a day to engaged contacts (people who’ve opted in recently and know your brand), then increase as you build quality history.
Tier downgrades happen when quality drops or block rates spike. Meta usually flashes a warning in WhatsApp Manager a few days before downgrading, but you can also watch Flowella’s Analytics page for spikes in block rate or template rejection.
Each phone number has its own tier limit. Two Tier 2 numbers give you 2,000 unique recipients per 24 hours total, which is often easier than waiting to get a single number to Tier 3.

Reading your current tier in Flowella

Flowella surfaces the current tier and approximate remaining capacity on Settings → Meta (under the phone number details) and on the Dashboard → Channels widget. The number you see is the cap; what you’re using is shown as a percentage. If the percentage is climbing fast during a campaign, throttle the send rate or split it across multiple numbers. Flowella does not automatically pause sends to stay under the cap — you’ll see errors from Meta once you’ve hit it, and the remaining messages get queued for the next 24-hour window.

Service window messages and the 24-hour rule

A reminder about the customer service window: any free-form (non-template) message must be sent within 24 hours of the customer’s last message to you. Outside that window, you can only send template messages, which are what the tier limits apply to. This means Flowella’s two-way conversation features (Inbox replies, AI agent handoffs, Form fills) are essentially unlimited as long as the customer initiated the conversation. The tier limit only constrains outbound nurture, broadcasts, and re-engagement campaigns.