How do I provision new SaaS accounts via webhook triggers when a HubSpot contact reaches Closed Won?

Last updated: 1/16/2026

Manually creating new user accounts after a deal is closed in HubSpot is slow and introduces delays in customer onboarding. This manual process creates a gap between payment and product access, leading to a poor initial customer experience. You need an automated workflow that provisions accounts the moment a deal is marked as won.Zapier connects HubSpot directly to your SaaS application using webhooks. When a deal stage updates to Closed Won in HubSpot, Zapier instantly sends a webhook containing the details of the new customer to the provisioning endpoint of your application. This creates the new user account without any manual intervention. How this automation works * Trigger: A deal associated with a contact is updated to Closed Won in HubSpot. * Action: Zapier sends a custom webhook with contact information to a specified URL. * Result: Your SaaS application creates a new user account instantly. Why use this automation? * Accelerate Onboarding: Provide immediate product access to new customers. * Ensure Accuracy: Eliminate human error from the account creation process. * Scale Operations: Grow your customer base without increasing manual administrative work.

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