How to Use GreenTick WhatsApp API for Bulk Messaging?
Introduction
A boutique owner in Pune writes a festive offer, pastes 800 numbers into a bulk sender on her personal WhatsApp, and hits send. By message 300, the account is restricted. A gym in Dubai and a caterer in Lagos have lived the same story. The offer was fine. The channel was the problem, because WhatsApp never agreed to let that number message people at scale.
The fix is the official route. The GreenTick WhatsApp API for Bulk Messaging runs on Meta’s WhatsApp Cloud API, so every broadcast goes out from a verified business number, using a template Meta has approved, to contacts who agreed to hear from you. No coding, and no personal number at risk.
This guide covers what you need, the exact steps inside GreenTick, how many messages you can send per day, and the mistakes that still get businesses flagged on the official API.
What Is GreenTick WhatsApp API?
GreenTick is an official Meta WhatsApp Business Solution Provider (BSP). It connects your business number to the WhatsApp Cloud API and gives you one dashboard to run it: contacts, templates, broadcasts, automations, and a shared team inbox.
Bulk messaging through the API works differently from bulk sending on the regular WhatsApp app:
- Messages go out through Meta’s infrastructure, not a phone or browser tab.
- Every business-initiated message uses a template Meta has approved.
- Recipients see your business profile, not an unknown number.
- Replies land in one inbox your whole team can work from.
Meta’s Cloud API is the engine. GreenTick is the steering wheel.
Why Use the Official GreenTick WhatsApp API for Bulk Messaging?
Unofficial bulk tools automate the WhatsApp app or WhatsApp Web, which WhatsApp’s terms do not allow. Once the sending pattern looks automated, the number gets restricted or banned, often with its chat history.
The official API removes that risk at the source.
| Official API via GreenTick | Personal Number + Bulk Tool | |
|---|---|---|
| Allowed by Meta | Yes | No |
| Ban risk | Low when opt-in and template rules are followed | High |
| Daily reach | Starts at 250 contacts, grows with verification and quality | No official limit, enforced through bans |
| Sender identity | Verified business profile | Personal or unverified number |
| Team access | Shared inbox, multiple agents | One phone |
| Cost | Meta message fees + platform plan | “Free” until the number is lost |
If bans have already hit you, read our guide on how to send bulk WhatsApp messages without getting banned.
What You Need Before You Start?
GreenTick requires all four of these before go-live:
1. A Meta Business Account
Create a business portfolio free at business.facebook.com.
2. A Facebook Page
Link a Facebook Page to that business account.
3. A Business Phone Number
The number must be able to receive a verification SMS or call. A number already on WhatsApp can often be connected too, subject to Meta’s eligibility rules.
4. Meta Business Verification
Submit a registration document for your country: GST certificate in India, trade licence in the UAE, CNPJ in Brazil, Companies House record in the UK.
Stuck on any of these? Our WhatsApp API setup guide walks through each one.
How to Use GreenTick WhatsApp API for Bulk Messaging?
Step 1: Connect Your Number
Log in at dashboard.greentick.ai, open WhatsApp Connections, and complete Meta’s signup flow.
Step 2: Import Your Contacts
Go to Contacts and upload a CSV with full country codes (+91, +971, +55, +44). Include only people who opted in. Keep segments separate: new leads, repeat buyers, inactive customers.
Step 3: Create a Template
Open Templates, pick a category (Marketing, Utility, or Authentication), and write your message. Add variables like {{1}} for the customer’s name, plus an image and buttons if needed.
Step 4: Submit for Approval
Meta reviews every template. If it is rejected, edit the flagged part and resubmit.
Step 5: Build the Broadcast
Open Broadcast, choose the approved template, select your audience, and map each variable to a contact field.
Step 6: Send It
Launch the broadcast, keeping your recipients’ local time in mind. A list split across India and the UK should not get one 9 AM blast.
Step 7: Handle Replies
Responses arrive in the Shared Team Inbox. Set up Automations so button taps like “Price?” get an instant answer.
A template that tends to perform well:
Hi {{1}}, our festive sale is live: 20% off everything until Sunday. Tap below to shop.
[Shop Now] [Stop Offers]
The “Stop Offers” button matters. It lets people leave quietly instead of blocking you.
How Many Messages Can You Send Per Day?
Meta limits how many unique contacts you can start conversations with, not how many messages you send in total. These limits cap new conversations per unique user within a rolling 24-hour window.
1. Starting Limit
When you go live on the WhatsApp API, your limit is 250 unique users a day.
2. Scaling Up
Business verification and consistent quality unlock higher limits, up to unlimited.
3. Shared Pool
Since October 2025, Meta applies the limit at the business portfolio level, so all numbers in the same portfolio share one limit.
4. Tier Changes
Meta announced plans to remove the 2K and 10K tiers, moving verified businesses straight to a 100K daily limit. Check your live limit in WhatsApp Manager instead of planning around an old tier ladder.
Replies inside the 24-hour customer service window do not count against your limit.
On cost, Meta charges per delivered template, and the rate depends on category and recipient country. Marketing costs the most, utility less, and service replies inside the 24-hour window are free. See Meta’s official pricing page for current rates and our WhatsApp Business API pricing breakdown. GreenTick adds a comparatively lower markup than most BSP competitors (industry range: 5-20%).
What Most People Get Wrong About Bulk WhatsApp Messaging?
The biggest myth: “Official API means I can message anyone without consequences.”
The API removes the automation risk. It does not remove the spam risk. Meta tracks a quality rating based on how people react to your messages. Blocks and reports drag it down, which can freeze your limit and pause your templates.
Three rules keep your quality high:
1. Opt-In First
Bought lists and scraped numbers produce blocks, whatever the platform.
2. Relevance Over Volume
Five hundred targeted messages beat five thousand generic ones.
3. Always Offer an Exit
A stop button costs nothing and protects your rating.
GreenTick is built around these rules: segmented contacts, template guidance, and automations that answer replies while interest is still warm. You can try it free for 7 days at dashboard.greentick.ai or book a demo to see a live broadcast.
What Most People Get Wrong About Bulk WhatsApp Messaging?
The biggest myth: “Official API means I can message anyone without consequences.”
The API removes the automation risk. It does not remove the spam risk. Meta tracks a quality rating based on how people react to your messages. Blocks and reports drag it down, which can freeze your limit and pause your templates.
Three rules keep your quality high:
1. Opt-In First
Bought lists and scraped numbers produce blocks, whatever the platform.
2. Relevance Over Volume
Five hundred targeted messages beat five thousand generic ones.
3. Always Offer an Exit
A stop button costs nothing and protects your rating.
GreenTick is built around these rules: segmented contacts, template guidance, and automations that answer replies while interest is still warm. You can try it free for 7 days at dashboard.greentick.ai or book a demo to see a live broadcast.
Conclusion
Bulk WhatsApp messaging works when the channel is official, the list is opted in, and every message earns its place. Set up your Meta business account, get verified, build one strong template, and send to a segment that wants to hear from you.
Bulk messaging was never the risk. Sending it from a number Meta did not recognise was.
Frequently Asked Questions
Can I send bulk WhatsApp messages without getting banned?
Yes, through the official WhatsApp Business API. Messages go through Meta’s approved infrastructure, so automation alone will not get you banned. You still need opted-in contacts and approved templates to keep your quality rating healthy. You can aslo use Premium SEnder for bulk messaging.
How many messages can I send per day with WhatsApp API?
New accounts start at 250 unique contacts per rolling 24 hours. Business verification and good quality scores raise that limit, up to unlimited. The limit is shared across all numbers in your business portfolio.
Do I need a developer to use GreenTick?
No. GreenTick handles the API connection. You manage contacts, templates, and broadcasts from a no-code dashboard.
How much does bulk messaging on WhatsApp API cost?
You pay Meta’s per-message fee, which varies by message category and recipient country, plus your GreenTick plan. Check Meta’s official pricing page for current rates.
Is it safe to message customers who haven't messaged me first?
It’s higher risk. WhatsApp is a personal channel, so messages from numbers a recipient doesn’t recognize are more likely to be reported. Whenever possible, build your list from people who have opted in, inquired first, or saved your number.
Can I send bulk messages without a template?
No. Any message you start outside a 24-hour customer service window must use a Meta-approved template. Once a customer replies, you can send free-form messages for 24 hours.