Your WhatsApp Business API number is only as useful as its reputation with Meta. Send messages people did not ask for, and they block or report you. Enough of that and your WhatsApp quality rating drops, your sending limits stop growing, templates get paused and, in the worst case, the number is restricted. This guide explains how opt-in, the quality rating and messaging limits fit together, and what to do to keep your number in good health.
Start with opt-in
Meta requires businesses to get a customer’s opt-in before sending them WhatsApp messages first. Opt-in means the customer has agreed to receive messages from your business on WhatsApp. Good opt-in has three qualities:
- Clear: the customer knows it is WhatsApp, and knows it is your business.
- Specific: they know roughly what they will get, such as order updates, appointment reminders or offers.
- Recorded: you can show when and where they agreed.
Practical ways to collect opt-in in India
- Website and app forms: a line next to the phone field, such as “Send me order updates on WhatsApp”, with a tick box the customer selects.
- At the counter: a QR code at reception, a hotel front desk or a dealer counter that opens a chat with your number. When the customer messages first, you have a natural starting point.
- On a phone call: agents ask “Can we send the details on WhatsApp?” and note the answer against the contact.
- Click-to-chat links: links in your email signature, invoices or Instagram profile that open a chat.
- Admission and registration forms: schools, colleges and hospitals can include a WhatsApp consent line on the form.
Store the opt-in with the contact, and honour opt-outs quickly. A customer who replies “STOP” and still gets offers will press block next time.
What is the WhatsApp quality rating?
Meta gives every business phone number a quality rating based on how recipients react to your messages over recent days. The main negative signals are customers blocking your number and reporting it as spam. Low read rates and customers marking messages as unwanted also hurt.
The rating is shown as a colour in WhatsApp Manager:
| Rating | Meaning | What to do |
|---|---|---|
| Green (high) | Recipients are happy with your messages | Keep doing what you are doing |
| Yellow (medium) | More blocks or reports than usual | Review recent templates and lists now |
| Red (low) | Many recipients are blocking or reporting you | Stop marketing sends and fix the cause |
Templates also have their own quality. A template that many people block can be paused by Meta, even if the number overall is still green. Repeated problems can lead to a template being disabled.
How messaging limits work
Meta also sets a messaging limit: how many unique customers you can start conversations with in a rolling 24-hour period using templates. Replies inside an open customer service window do not count the same way, because the customer messaged first.
New numbers start with a lower limit. Meta raises it in steps, or tiers, as you send more messages to more people while keeping a good quality rating. If the rating stays low, Meta does not raise your limit and may lower it. Meta updates the exact tier sizes and rules from time to time, so check the current figures in WhatsApp Manager rather than relying on a number you read somewhere.
The practical lesson is simple: quality comes first, and volume follows.
Why WhatsApp numbers get blocked or restricted
The most common causes are:
- Bought or old lists. Numbers collected years ago, or bought from a vendor, produce blocks fast.
- Marketing to people who only expected updates. A customer who agreed to delivery updates did not agree to daily offers.
- Too many messages too quickly. Large sends with no pacing look like spam and trigger rate limits.
- Irrelevant content. One offer for everyone, in a language the customer does not use.
- No easy way out. If customers cannot opt out, they block.
- Sending at odd hours. A promotion at 11 pm earns a block.
How to keep your quality rating green
- Send to people who agreed. Use your own opted-in contacts, not purchased data.
- Segment. Send each message only to the customers it applies to: a fee reminder to parents with pending fees, a service reminder to owners due for service.
- Prefer utility over marketing. Order, appointment and payment updates are useful and rarely blocked.
- Use the customer’s language. A Tamil template for Tamil-speaking customers reads as a service, not an advert.
- Add an opt-out line in the footer, such as “Reply STOP to unsubscribe”, and act on it.
- Pace your campaigns. Send in batches with gaps between them, and test new templates on a small group first.
- Watch the signals. Check quality rating changes and failed messages after every campaign, and pause if blocks rise.
- Answer replies. A campaign that gets replies nobody answers creates angry customers. Make sure agents are ready.
For campaign set-up, list preparation and pacing in detail, see WhatsApp bulk message campaigns. For writing templates that pass review, see WhatsApp template messages.
How the BitVoice Social Media Platform helps
The BitVoice Social Media Platform is built on the official WhatsApp Cloud API and includes several features that protect your number:
- Paced campaigns: sends go out in batches, with the batch size, the delay between messages and the delay between batches set by the admin. The defaults are cautious and suit most numbers.
- Delivery tracking: each campaign shows pending, sent, delivered, read and failed counts, and a report at the end.
- Failure reasons: failed messages show why they failed, such as a number without WhatsApp, a closed 24-hour window or a rate limit.
- Alerts from Meta: when the webhook fields are subscribed, number quality rating changes, template status changes and account updates appear in the activity log and notifications.
- Tags and customer profiles: contacts can be tagged so that each campaign goes only to the right group.
Customers who reply land in a shared inbox, where agents can answer and a chatbot can handle routine questions, with a hand-over to a person whenever needed.
Planning your first WhatsApp campaigns and want to start safely? Talk to BitVoice.
FAQs
What is the WhatsApp quality rating?
It is Meta’s rating of your business number, based on how recipients react to your messages, mainly blocks and spam reports. It is shown as green (high), yellow (medium) or red (low) in WhatsApp Manager.
Why is my WhatsApp Business number blocked or restricted?
Usually because many recipients blocked or reported it. Common causes are bought lists, marketing to people who did not opt in, sending too much too fast and offering no way to opt out.
How do I increase my WhatsApp messaging limit?
Meta raises limits in tiers as you message more unique customers while keeping a good quality rating. Send relevant messages to opted-in contacts and avoid spikes of blocks.
Is opt-in required for WhatsApp Business API messages?
Yes. Meta requires businesses to get opt-in before sending messages first. The customer should know the messages come from your business on WhatsApp and what kind of messages to expect.
