For SaaS
Email verification for SaaS products.
Bad sign-up emails mean lost activations, failed password resets and trial abuse. Check addresses the moment users type them, and clean the user base you already have.
No monthly subscription · Credits never expire · Unknown results use no credits
Where verification fits in a SaaS
- Sign-up: reject invalid addresses and suggest corrections for typos
- Free trials: flag disposable addresses often used to repeat trials
- Lifecycle email: clean the user table before onboarding or re-engagement campaigns
- CRM syncs: check addresses before they enter sales tools
How the API works
Send a POST request with the address to verify and receive JSON with the status, a result code, a reason and flags. Most checks return in seconds; slower checks return an ID you can poll. Idempotency keys make retries safe, so a network error never charges twice.
Pay for what you check
API checks use the same pay-as-you-go credits as the dashboard. Unknown results are free and credits never expire, so spiky sign-up volume doesn't need a plan upgrade.
Frequently asked questions
Should I block sign-ups that return Unknown?
Usually not. Unknown often means a catch-all company domain. Allow the sign-up and rely on email confirmation instead.
Can I verify my existing users?
Yes. Export them as CSV and upload a list in the dashboard, or submit up to 50,000 addresses per request through the API.
How long are checked addresses kept?
They're permanently deleted 7 days after verification, including addresses checked through the API.
Related
Ready to check your list?
Pay only for Passed and Failed results. Credits never expire.
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