When a new customer is created in Pabbly Subscription Billing, send welcome message to user's WhatsApp using WhatsApp Cloud API

When a customer is created in Pabbly Subscriptions, FlowMattic sends them a WhatsApp text through WhatsApp Cloud API. You write the welcome and map the phone after import.

Pabbly Subscriptions

WhatsApp Cloud API

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2 steps Setup ~5 min Used on 2.4k sites Free to import

What this workflow does

A new subscriber record in your billing system is a natural moment to say hello. This workflow listens to Pabbly Subscriptions and passes each new customer to WhatsApp, so the greeting goes out from your business number without anyone copying details between tabs.

The trigger fires when a customer is created in Pabbly Subscriptions and hands over that customer's record. The second step, Send Text Message from WhatsApp Cloud API, ships unmapped: after import you map the customer's phone number from the trigger and write the welcome text yourself, pulling in the first name or any other customer field you like.

One limit matters a lot here. WhatsApp only delivers free-form text to someone who has messaged your business number in the last 24 hours. A brand-new billing customer usually hasn't, so as shipped most of them won't receive this text. For a welcome that reaches everyone, switch the step to Send Template Message and pick a template WhatsApp has approved.

Run a test by creating a customer in Pabbly Subscriptions with your own number, then open Task History to see the data the trigger sent and the response WhatsApp returned.

Welcome for customers who chatted before paying

A coaching business answers questions on WhatsApp first, then sets the client up in Pabbly Subscriptions; the client gets a hello in the chat they already opened.

Template welcome for every new subscriber

A SaaS team swaps in Send Template Message with an approved greeting, so each customer Pabbly Subscriptions creates hears from them on WhatsApp, even with no earlier chat.

Support number introduced on day one

A membership site uses the message to share the WhatsApp number customers should save for billing and account questions.

How this workflow runs

What happens at each step once the workflow is on, and what you need before you import it.

Step 1Trigger
Pabbly Subscriptions Customer Create
Starts the workflow when a customer is created in Pabbly Subscriptions. The new customer's details become available to map into the WhatsApp step; a test run shows the exact field names Pabbly sends.
Step 2Action
WhatsApp Cloud API Send Text Message
Sends the new customer a free-form WhatsApp message from the number you connect. The step ships unmapped: after import, map the customer's phone number and write the welcome, adding the name or other fields from the trigger.

What you need

FlowMatticCore
Pabbly Subscriptions AccountAccount
WhatsApp Cloud API AccountAccount

After importing, map your own data. To keep the template universal, not every step is pre-filled. Open each step in the builder and connect your accounts and fields (channels, lists, sheets, recipients) before you switch the workflow on.

Make it yours

Changes worth making after you import it.

Switch the action to Send Template Message with an approved template if most new customers have never written to your WhatsApp number, since free-form text only reaches people inside the 24-hour window.
Ask for phone numbers with the country code when customers sign up in Pabbly Subscriptions, because WhatsApp needs the full international number.
Add a Filter between the Pabbly Subscriptions trigger and the WhatsApp step that continues only when the phone field is not empty, so customers without a number don't produce a message attempt.
Add a Delay between the trigger and the WhatsApp step if you'd rather the welcome arrive a few minutes after sign-up than at the same moment.

Questions about this workflow

Will a new Pabbly Subscriptions customer always get the WhatsApp text?

No. Free-form text is only delivered within 24 hours of the person last messaging your business number, so most new customers won't receive it as shipped. An approved template, sent with Send Template Message, is the way to reach them.

Is the welcome message already written in the template?

No. The Send Text Message step ships empty, so you write the text and map the customer's phone number after import. You can mix fixed wording with customer fields from the trigger.

Does it fire for new subscriptions or only new customers?

It fires when a customer record is created. FlowMattic's Pabbly Subscriptions integration has separate Subscription Create and Subscription Activate triggers if you want the message tied to the subscription instead.

How do I see whether WhatsApp accepted the message?

The run's entry in Task History shows the customer data from Pabbly Subscriptions and the response WhatsApp Cloud API returned for the send.