Hello Ilina,
We would like to inform you that yes this is possible through the Webhook and the API.
You can run the Get Single Customer via customer email API , if the customer exist then avoid creating new customer and if the customer does not exist then you can create customer.
Please refer to the link for API -
We provide the API which follows all the `HTTP` request and based on the `REST` theory. These API allows you to perform all the actions in your account just by requesting the call. These calls can be fired using any API development platform like Postman. Every call is revealed with an URL...
apidocs.pabbly.com
Also, you have to set the Subscription Renew Webhook so that you can catch the webhook of subscription renew through which you can check the status of the subscription. If you find any status rather than Live / Trial / Future then you can directly block the customer and do not provide them the access of your plan, if you wanted to block the customer.
Please refer to the link for Webhook -
Your favorite Pabbly Subscriptions offers you webhook and API support so, you can integrate it with any web application of your choice!
www.pabbly.com
Hope the above information helps.
If you need further support please reach out to us.
Regards,
Vipin Mishra