WhatsApp Messaging API

Send real-time transactional message to your customers through our WhatsApp API. Leverage the world’s most popular messaging app to perfect your customer support.

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  • No Charge per Message
  • No Setup Charge
  • No Approvals Required
  • Absolutely Free with Enterprise Version
Try out WhatsApp API!

Experience an online demo like never before! Want to test out our Whatsapp Message API? Enter a valid mobile number and select the correct country code and hit the send button. Voila! Your message is successfully sent.

Simple REST API

Secured communication

Easy to Integrate

JSON Response

Just enter a valid mobile number and select the correct country code and hit the send button.

How It Works?

Follow the 3 step process to get started with our WhatsApp API.

Sign Up

Sign Up for a free account to get your username and password to access the API.

Free Sign Up

Integrate API

Connect with our API using the integration guide & documentation mentioned below. You get free 20 messages to try out.

Integration Guide

Upgrade Account

Upgrade your account to Enterprise or above package and get upto 1000 messages for free along with the Whatso Software.

Upgrade Account
API Pricing & Limits

Free Account

1. You can integrate API and send upto 20 messages. After 20 messages, you will get an upgrade account response.

2. Messages are sent from Whatso's Mobile number.

3. Only text message shall be sent. Images & File attachment are not supported.

Standard, & Professional

1. Users who have bought standand & Professional package can integrate API and send upto 20 messages.

2. Messages are sent from Whatso's Mobile number.

3. Only text message shall be sent. Images & File attachment are not supported.

Enterprise & Above

1. API is bundled with purchase of Whatso Enterprise Software and you can send upto 1000 messages/day (UTC Time).

2. Messages are sent from Whatso's Mobile number. In next version, we will enable sending from your number.

3. Only text message shall be sent. Images & File attachment are not supported. In future version, we will enable files sending.

Note - These are introductory prices. Price might change at a later stage.

Why Should you use WhatsApp API from Whatso?

No Charge per Message

We dont charge per message. API is given free of cost with Enterprise version.

No Setup Charge

No need to have a Facebook Messenger account or pay any upfront setup charge.

Blazingly Fast

Your messages are sent instantly. You can batch upto 10 numbers in a single API call.

Integrations (Coming Soon)

Hire us for any custom integrations! Email us on hi@whatso.net or talk to us on Chat support.

Shopify

Magento

PerfexCRM

Zapier

Google Sheets

API Integration Guide

1. Get your Username & Password

Sign up for a free account to get your Username & Password. Upgrade to Enterprise version to get API to send message to 1000 contacts/day.

2. Prepare Request

Visit Swagger API Documentation

URL: https://api.whatso.net/WhatsAppApi/V1/SendMessage

3. Parameters

Username *
Your 32 character Username. Sign up or login to Whatso and get your API Username.
Password *
Your 32 character Password. Sign up or login to Whatso and get your Password.
MessageText *
This includes the text message you want to send and can be upto 1500 characters long. Text needs to be URL-encoded.
MobileNumbers *
Comma separated mobile numbers with country code. It can have minimum 1 or maximum 10 mobile numbers. mobile numbers. Do not include ‘+’ symbol.
ScheduleDate *
The date & time when you want your message to be delivered. Leave it blank for sending instant message. The format should be in datetime ticks E.g. 14082021143900.

4. Response

{

"MessageText ": "Hello there!", 
"DateCreated": "Thu, 30 Jul 2021 20:12:31 +0000", 
"DateSent": "Thu, 30 Jul 2021 20:12:33 +0000", 
"ScheduledDate": "Thu, 30 Jul 2021 20:12:33 +0000", 
"From": "+91747xxxxxxx", 
"MessageId": "758458",  
"MobileNumbers": "9199xxxxxxxx,9199xxxxxxxx" 
"ResponseMessage": "success" 
"ErrorCode": "0" 
"ErrorMessage": "" 
}

Frequently Asked Questions

As of current version, you cannot send message from your own number. However, we are going to launch this functionality very soon.

As of current version, you cannot send image, pdf, or any file along with message. You can send text message only. However, we are going to roll out this functionality very soon. You can email us on hi@whatso.net if you need any quick support on this.

The message you want to send via the API needs to be encoded (encodeURIComponent). When you encode a new line, it is translated to '%0A'. This is how you will be able to accommodate different types of characters in the WhatsApp message.