Why a bulk WhatsApp message service must use the official API
Many bulk WhatsApp message service providers run unofficial tools that log in to a normal WhatsApp account and push thousands of messages through it. WhatsApp detects this and bans the number, often permanently.
Chatzyn connects only through Meta's official Cloud API. Every bulk message is an approved template, sent to people who agreed to hear from you. That is slower to set up than a cheap sender, but your business number keeps working next month.
- No cold messaging. Marketing templates only go to contacts who have opted in.
- No scraped or bought lists. A contact imported from a spreadsheet is not opted in unless your file has a consent column and that row says yes.
- No workarounds for Meta's daily messaging limit. The limit is how Meta protects your number.
Send WhatsApp broadcasts to the right customers
A broadcast in Chatzyn is one approved template sent to an audience: everyone who has opted in, or a segment you saved, for example by tag, custom field, consent status or recent activity. Send it now or schedule it for later.
Each message can carry the person's own details, such as their name, through template variables. Chatzyn checks the variables before you send, so nobody gets a message with a blank where their name should be.
The audience is frozen when you launch. The number of people you approve is the number that gets messaged, even if the segment grows afterwards.
- Delivered, read and replied reported for each recipient.
- A/B variants: split one campaign between template versions and compare the results.
- Retry failed: send again to the recipients whose message failed, without touching the rest.
- Throttle: slow a campaign down to a set number of messages per second if you want it to go out gently.
Pause, resume and cancel a running campaign
You can pause a campaign while it is sending, resume it later, or cancel it. Pausing really stops the messages still waiting in the queue, it does not only hide them.
Campaigns also wait behind your team. A reply an agent types in the inbox, or a message from a live automation, goes out ahead of broadcast messages on the same number.
Opt-in and opt-out handled for you
- Marketing templates need WhatsApp marketing opt-in. Without it, Chatzyn does not send, and the count before launch shows how many people were left out for this reason.
- A customer who replies STOP gets no more marketing from Chatzyn, whether it comes from a campaign, an automation or a store message.
- An opt-out survives a later CSV import. Uploading the same contact again does not opt them back in.
- Utility templates, such as order updates, need the customer to have agreed to hear from you, but they do not need marketing opt-in. In a broadcast, opt-outs are excluded by default.
Tracked links and QR codes
Links in a campaign can be tracked, so you see who clicked, not just who read. WhatsApp itself reports no clicks, so this is the only way to know.
Under Links and QR codes you can make wa.me links and QR codes for print, packaging or ads. Each one opens a chat with your number, can start an automation, and reports which link or poster brought the customer in. This is how you grow an opted-in list without buying one.
Messaging limits and number quality
Meta limits how many different people your business can message with templates in 24 hours. New businesses start at 250 people a day and move up as they send good quality messages. The limit is shared by every number in your business portfolio. The WhatsApp broadcast limits page explains each step.
Meta also rates each number green, yellow or red, based on blocks and reports. Chatzyn shows the rating for each number, and a campaign stops by itself if the rating drops to yellow or red, the number disconnects, or Meta pauses the template. You can also pause all marketing for the whole workspace with one switch.
What a WhatsApp marketing message costs
Meta charges for each delivered template message, on top of your Chatzyn plan. Prices depend on the template category and the customer's country.
| Category | Price |
|---|---|
| Marketing | ₹0.8631 |
| Utility | ₹0.1150 |
| Authentication | ₹0.1150 |
| Service | ₹0.1150 |
Each business number also gets 1,000 free service messages a month. Source: Meta pricing page. See the WhatsApp API pricing page for the full breakdown and Pricing for Chatzyn plans.
Questions people ask
Which is the best bulk WhatsApp message service provider?
Pick one that uses Meta's official WhatsApp Business API. Unofficial bulk senders are cheaper on day one but get numbers banned. Chatzyn uses only the official API and sends marketing only to customers who opted in.
Can I send bulk WhatsApp messages without getting banned?
Yes, if you use the official API, approved templates and an opted-in list, and you stop when your quality rating drops. Chatzyn enforces the opt-in and pauses a campaign on its own if the rating falls to yellow or red.
How many WhatsApp messages can I send in a day?
On the API, Meta limits how many different people you can message with templates in 24 hours. It starts at 250 and rises to 2,000, 10,000, 100,000 and unlimited. The WhatsApp broadcast limits page explains how to move up.
Can I message numbers that have not saved my contact?
Yes. On the API, a template reaches people whether or not they saved your number, unlike broadcast lists in the WhatsApp Business app. For marketing they must still have opted in to hear from you.
How much does it cost to send a WhatsApp marketing message in India?
Meta charges ₹0.8631 per delivered marketing message in India from 1 October 2026. Utility messages cost ₹0.1150. Your Chatzyn plan is separate; see Pricing.
Can I stop a WhatsApp campaign after it has started?
Yes. Pause, resume or cancel it from the campaign page. Messages still in the queue are held back, not sent.
Can I upload my customer list from Excel?
Yes, as a CSV file. To send marketing to those contacts, map a consent column that records they agreed to receive WhatsApp messages. Anyone without it is not opted in.