Sending Automated Messages in WhatsApp using the Twilio API

Fatulla
3 min readFeb 2, 2023

In this article, we will show you how to send automated messages in WhatsApp using the Twilio API. We will cover the steps required to set up a Twilio account, obtain a Twilio number, and use the Twilio API to send messages to WhatsApp.

sending a message using Twilio API

Step 1: Set up a Twilio account

To get started, you need to set up a Twilio account. If you don’t already have one, go to the Twilio website and sign up for a free account.

Step 2: Obtain a Twilio number

Once you have set up your Twilio account, the next step is to obtain a Twilio number. This is the virtual number that you will use to send messages to WhatsApp.

To obtain a Twilio number, follow these steps:

  1. Log in to your Twilio account.
  2. Click on the “Phone Numbers” tab.
  3. Click on the “Buy a Number” button.
  4. Choose a Twilio number that supports WhatsApp messaging.
  5. Click on the “Buy” button to purchase the number.

Step 3: Install the Twilio library

The next step is to install the Twilio library in your Python environment. You can install it using the following command:

pip install twilio

Step 4: Write the Python code

Once you have set up your Twilio account and obtained a Twilio number, you can write the Python code to send automated messages in WhatsApp.

Here is a sample Python code that uses the Twilio API to send a message to a WhatsApp user:

from twilio.rest import Client

# Your Twilio account SID and auth token
account_sid = 'your_twilio_account_sid'
auth_token = 'your_twilio_auth_token'

# Initialize the Twilio client
client = Client(account_sid, auth_token)

# The phone number you want to send the message to
to_number = 'whatsapp:+12345678901'

# The Twilio number you will use to send the message
from_number = 'whatsapp:+14155238886'

# The message you want to send
message = 'Hello, there!'

# Send the message
message = client.messages.create(
to=to_number,
from_=from_number,
body=message)

# Print the message SID
print(message.sid)

Replace your_twilio_account_sid and your_twilio_auth_token with your Twilio account SID and auth token, respectively. The to_number should be the phone number you want to send the message to, in international format and starting with "whatsapp:". The from_number should be a Twilio-provided number, also in international format and starting with "whatsapp:".

Step 5: Run the Python code

Save the above Python code to a file and run it using the following command:

python send_message.py

If everything is set up correctly, the message should be sent to the recipient’s WhatsApp account.

And that’s it! You now have the power to send automated messages in WhatsApp using the Twilio API. With just a few lines of code, you can surprise your friends and family with a message from your new virtual Twilio assistant.

Just remember, use this power wisely. Don’t become the bot who cried wolf and spam your contacts with too many automated messages. They might start ignoring you, and then where will you be? Alone, with only your computer and your Python code for company.

So, in conclusion, congratulations on becoming a Twilio wizard! Now go forth and conquer the world of automated messaging in WhatsApp. May the code be with you!

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Fatulla
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Computer science student & avid learner in data science & ML. Interested in Telegram bots & exploring AI. Sharing experiences & insights on Medium