BounceBlock for developers
A simple REST API to verify email and phone in real time — so you can validate at signup, guard your forms, and keep bad data out of your database without building verification yourself.
What you can build
Simple integration
Authenticate with a bearer key, POST a JSON body with an email and/or phone, and read a structured result — valid/invalid/catch-all/unknown for email, line type and carrier for phone. The same engine backs bulk and real-time, so results are consistent.
Keys and limits
Generate and revoke API keys from settings on the Business plan. Rate limits are generous for real-time form and signup use, and every call is logged for your own auditing.
Ready to see what’s hiding in your list?
Upload a file and preview your first 100 verifications free — email and phone, in one pass.
Frequently asked
What does the API return?
A JSON object with email status (and sub-status / typo suggestion) and phone validity, line type and carrier.
How do I authenticate?
A bearer token in the Authorization header. Manage keys from your settings on the Business plan.
Is my data safe?
Your uploaded data is encrypted and permanently deleted within 24 hours. We never sell or share it.
BounceBlock for other teams
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.