An official bulk WhatsApp sender runs on Meta's WhatsApp Business Platform (the Cloud API), using approved templates and opted-in contacts. An unofficial sender automates the normal WhatsApp app, WhatsApp Web or a modified app. WhatsApp's own guidelines list unofficial clients, bulk messaging and auto-messaging among the behaviours that can get an account suspended, so unofficial tools put your number at risk every time you send.
Updated 6 November 2026
- WhatsApp's messaging guidelines name "unofficial clients, bulk messaging, auto-messaging, auto-dialing, or automation" as abuse that can lead to temporary or permanent suspension.
- WhatsApp said in 2019 that it bans about 2 million accounts a month for bulk or automated behaviour, and that it would take legal action against abusers from 7 December 2019.
- The official route uses approved templates, opt-in and messaging limits that start at 250 customers a day and grow with good quality.
- A provider is official if you sign up through Meta's own Embedded Signup window, the WhatsApp account sits in your own Meta business portfolio, and templates go through Meta review. A QR code scan from your phone's Linked Devices screen is a warning sign.
Official vs unofficial: the difference
WhatsApp offers businesses two official ways to message customers. The WhatsApp Business app is a free phone app for one person chatting with customers. The WhatsApp Business Platform, which most providers reach through Meta's Cloud API, is built for sending at scale from software. Anything else that sends in bulk is an unofficial workaround.
An official sender is software from a provider that Meta has approved to connect businesses to the platform. Meta calls these Solution Partners, Tech Providers and Tech Partners. Your messages go through Meta's servers under Meta's rules, and your templates are reviewed before you can send them.
An unofficial sender pretends to be a person using WhatsApp. It types and sends messages through the consumer or Business app, usually through WhatsApp Web, a browser extension or a modified app. It skips template review, opt-in checks and messaging limits, which is exactly why it is cheap and fast at first.
How unofficial bulk senders work
Most unofficial tools sold in Sri Lanka fall into one of four types. They differ in packaging, but they share the same weakness: they use an app that WhatsApp built for people, not for bulk sending.
- WhatsApp Web automation. You scan a QR code from your phone's Linked Devices screen, and the software controls that browser session.
- Browser extensions. A Chrome extension adds a "send to list" button to WhatsApp Web and clicks through contacts for you.
- Modified apps. Clones such as GB WhatsApp or WhatsApp Plus add bulk sending and auto-reply features that the real app does not allow.
- Number rotation. The seller spreads sending across many SIMs or virtual numbers, expecting some to be banned along the way.
Look out for selling points such as "no template approval", "unlimited messages" or "anti-ban mode". They tell you the tool is working around WhatsApp's rules, not within them.
What WhatsApp's rules say
WhatsApp's messaging guidelines, last updated on 23 September 2026, list adversarial behaviour that is not allowed. It includes using "unofficial clients, bulk messaging, auto-messaging, auto-dialing, or automation" to harm WhatsApp or its users, and "repeated unwanted contact" as spam.
The same page lists what WhatsApp may do about it. Actions include warnings, preventing further activity in chats, and "temporarily or permanently suspending an account". Businesses must also follow the WhatsApp Business Messaging Policy.
WhatsApp has also enforced against modified apps directly. In March 2019, Business Today reported that users of unofficial apps such as GB WhatsApp were seeing a "Temporarily banned" message and being told to switch to the official app.
WhatsApp said its 2019 legal action policy could rely on information it found off the platform, such as a company advertising that it can send bulk WhatsApp messages. Advertising "unofficial bulk WhatsApp" is a risk on its own.
What gets a business number banned
WhatsApp does not publish its spam detection rules. Based on its guidelines and Meta's documentation, these are the patterns that put a number at risk.
- Using an unofficial or modified appThe guidelines name unofficial clients directly. A clone app can lead to a temporary ban, and repeat use to a permanent one.
- Sending in bulk from the app or WhatsApp WebHundreds of identical messages from one phone in a short time look like automation, because they are.
- Messaging people who never agreedPeople can block and report you. Many blocks and reports in a short time are a strong spam signal.
- Using bought, scraped or old listsNumbers from a list seller or a three-year-old Excel file will produce high block rates and low reply rates.
- Adding people to groups without askingMass group adds count as unwanted contact, and members can report the group.
- Running a brand-new number at full speedA fresh number that starts sending to thousands of non-contacts on day one has no history to protect it.
On the official platform the same signals usually lower your quality rating first. Meta can then pause a template or slow down how fast your limit grows, so you get warnings in WhatsApp Manager before things get serious.
Side-by-side comparison
| Official (WhatsApp Business Platform) | Unofficial bulk sender | |
|---|---|---|
| Allowed by WhatsApp | Yes, through a Meta-approved provider | No. Named as abuse in WhatsApp's guidelines |
| How it connects | Meta's Cloud API, set up through Meta's Embedded Signup | WhatsApp Web session, extension or modified app |
| Message review | Templates reviewed by Meta, usually within 24 hours | None |
| Who you can message | People who opted in; limit starts at 250 a day and grows with quality | Anyone, until the number is blocked |
| Ban risk | Low if you follow the rules; warnings and quality ratings come first | High; temporary or permanent suspension without warning |
| Buttons, media and catalogues | Quick replies, links, call buttons, images, video and documents | Limited to what the app allows |
| Team inbox and CRM | Many agents on one number, connected to your shop or CRM | Usually one phone or browser |
| Delivery and read reports | Per message, through the API | Unreliable |
| Cost | Platform fee plus Meta's per-message fees | Cheap licence, plus the cost of lost numbers |
The real cost of each option
Unofficial tools look cheaper because there is no per-message fee. The hidden cost is the number itself. If it is suspended, you can lose the chats, the customers who saved it, and every printed flyer and shop sign that shows it.
On the official platform you pay two things: your provider's fee and Meta's per-message fee. These are the Sri Lanka rates shown on our WhatsApp pricing page, converted at LKR 331 to the US dollar.
| Sending 10,000 messages | Meta fee | About in LKR |
|---|---|---|
| Utility templates (order updates, reminders) | US$20 | LKR 6,620 |
| Authentication templates (codes) | US$20 | LKR 6,620 |
| Marketing templates (offers) | US$730 | LKR 241,630 |
| Replies inside the 24-hour service window | First 1,000 per number each month free, then about LKR 0.66 each | About LKR 5,940 for 10,000 |
| Bloomwire Starter plan (1 number, 1 seat) | LKR 8,500 a month; Meta's fees at zero markup | |
Marketing on WhatsApp is not cheap, and it should not be your only channel. For a broad promotion to a large list, a promotional SMS costs LKR 0.70 at Bloomwire, taxes included. WhatsApp marketing works best for smaller, engaged lists where buttons and images earn the extra cost. Read WhatsApp vs SMS vs email in Sri Lanka for when to use which.
Order updates, delivery messages and reminders are utility, at about LKR 0.66 each. Keep them free of offers so they stay in the cheaper category. Our 40 WhatsApp template examples show how.
How to check a provider is official
Meta approves three kinds of provider. Solution Partners can bill you for Meta's fees and offer credit. Tech Providers and Tech Partners connect you to the platform while Meta bills you directly for message fees. Solution Partners and Tech Partners are Meta Business Partners. Bloomwire is an official Meta Tech Provider.
Use these five checks before you pay anyone.
- Sign-up happens in Meta's windowAn official provider connects you through Meta's Embedded Signup, a Facebook login pop-up where you choose your business portfolio and phone number. No QR code scan from your phone.
- The account is yoursAfter sign-up you should see the WhatsApp Business account and phone number in your own Meta Business Suite, under WhatsApp Manager.
- Templates are reviewed by MetaYou submit templates and see their status (in review, approved or rejected) in WhatsApp Manager. "No approval needed" means it is not the official platform.
- Meta's fees are visibleEither Meta bills your own payment method, or a Solution Partner invoices you with Meta's rates shown. Flat "unlimited messages" packages do not match how Meta charges.
- Check the partner directoryMeta Business Partners appear in Meta's WhatsApp partner showcase. Tech Providers may not be listed there, so for them the first three checks matter most.
For a full set of questions to ask, read how to choose a WhatsApp Business API provider in Sri Lanka.
- Collect opt-in that names your business and says what you will send
- Use approved templates for anything outside the 24-hour window
- Add a "Stop promotions" button to marketing messages and honour it
- Start with your most engaged customers and grow slowly
- Watch your quality rating in WhatsApp Manager each week
- Install modified apps such as GB WhatsApp on a business phone
- Scan a QR code to give a bulk tool control of your WhatsApp Web
- Buy contact lists or reuse old lists without fresh consent
- Add customers to groups without asking
- Rely on "anti-ban" features or number rotation
Moving from an unofficial tool: checklist
Many businesses move to the official platform within a week or two, if their business documents are ready. Follow these steps in order.
- Stop the old toolUninstall extensions and modified apps, and log out of unknown sessions under Linked Devices on your phone.
- Clean your listKeep customers who bought from you or contacted you. Note when and how each one agreed to hear from you.
- Decide on the numberChoose whether to connect your existing number or use a new one for the API. A number that is already suspended may not be usable.
- Verify your businessComplete Meta business verification. Unverified portfolios can create up to 250 templates; verified ones can create far more.
- Sign up through an official providerConnect through Embedded Signup and confirm the account appears in your own WhatsApp Manager.
- Write your templatesStart with utility templates such as order updates, then a few marketing templates with opt-out buttons.
- Collect fresh opt-inAdd a WhatsApp tick box to checkout, a click-to-chat link on your site, and a QR code in store. Our free WhatsApp link and QR generator helps.
- Ramp upBegin with engaged customers. Your limit rises from 250 to 2,000 and beyond as quality stays high.
The step-by-step setup is in how to get the WhatsApp Business API in Sri Lanka. For campaign ideas that stay within the rules, see WhatsApp marketing in Sri Lanka.
Frequently asked questions
Is it legal to use a bulk WhatsApp sender in Sri Lanka?
This is not legal advice. Unofficial bulk senders break WhatsApp's own rules, which name unofficial clients, bulk messaging and auto-messaging as abuse. WhatsApp can suspend accounts that use them and said in 2019 that it would take legal action against bulk messaging abuse.
Why was my WhatsApp business number banned?
The most common causes are using a modified app or a bulk sending tool, messaging people who never agreed to hear from you, and receiving many blocks and reports in a short time. WhatsApp does not publish its exact detection rules.
What is the official WhatsApp API?
It is the WhatsApp Business Platform, which most providers reach through Meta's Cloud API. It lets software send approved template messages and handle customer chats at scale, under Meta's rules and pricing.
How do I know if a WhatsApp provider is official?
An official provider signs you up through Meta's Embedded Signup window, your WhatsApp account appears in your own Meta Business Suite, and your templates go through Meta review. Meta Business Partners are also listed in Meta's partner showcase.
How many messages can I send on the official WhatsApp API?
A new business portfolio can start conversations with 250 unique customers in a rolling 24 hours. The limit rises to 2,000 and then higher automatically when your quality stays high and you use at least half your limit.
Is the official WhatsApp API expensive in Sri Lanka?
Utility messages such as order updates cost about LKR 0.66 each in Meta fees, while marketing messages cost about LKR 24 each. Bloomwire plans start at LKR 8,500 a month, with Meta's fees at zero markup.
Sources
- WhatsApp messaging guidelines (WhatsApp, updated 23 September 2026)
- Solution providers overview (Meta for Developers)
- WhatsApp Business Platform partners (WhatsApp Business)
- Messaging limits (Meta for Developers)
- Getting opt-in for WhatsApp (Meta for Developers)
- Templates overview (Meta for Developers)
- WhatsApp pricing (Meta for Developers)
- WhatsApp will take legal action against automated or bulk messaging (SecurityWeek)
- WhatsApp can sue you for sending bulk messages (Business Insider India)
- WhatsApp to ban users of unofficial apps (Business Today)
