HeroBounce's REST API works natively with every major automation platform. Pick the one your team already uses.
Trigger email validation from 5,000+ apps. Connect to Google Sheets, HubSpot, Typeform, Salesforce, and more. No code required.
Build multi-step automation workflows. Validate emails from any form, CRM, or database — then route results anywhere.
Add an HTTP action step, point it at POST https://api.herobounce.com/api/v1/validate with your API key in the header, and pass the email field as the request body. Results come back with full validation metadata - ready to branch on status or is_valid.
From real-time signup gates to automated list hygiene — here is what teams build with the HeroBounce API.
Call the API in real time as users register to reject fake, disposable, and invalid addresses before they enter your database.
Upload a CSV via the bulk API endpoint. Get a clean, validated list back before your next send — reducing bounces and protecting deliverability.
Connect via Zapier or Make to push validation status and confidence scores back into HubSpot, Salesforce, or any CRM as a custom field.
A single API call returns is_disposable in milliseconds. Block temp-mail addresses at the edge — before they waste a trial or abuse a promotion.
Schedule a recurring Make or n8n workflow to re-check contacts older than 6 months. Email addresses decay — keep your lists fresh automatically.
Use the Email Finder API to discover professional addresses by name and domain, then validate them in the same request — no separate tool needed.
HubSpot, Mailchimp, and Brevo are live - connect in one click from your dashboard. ActiveCampaign and Klaviyo coming next.
Need a specific integration sooner? Let us know - we prioritise based on demand.
HeroBounce is API-first by design. Every feature available in the dashboard is accessible via REST — single validation, bulk jobs, Email Finder, and usage stats. If a tool can make an HTTP request, it can use HeroBounce.
curl -X GET \
"https://herobounce.com/api/v1/validation/single?email=jane@company.com" \
-H "X-API-Key: YOUR_API_KEY"
# Response
{
"email": "jane@company.com",
"status": "valid",
"is_valid": true,
"confidence": 0.97,
"details": {
"is_disposable": false,
"is_role_based": false,
"provider": "Google Workspace"
}
}