email checker api
Email checker API
Check whether an email is worth sending to before you spend money on campaigns or onboarding traffic.
Good for campaign preflight checks.
Useful for list hygiene and signup moderation.
Returns a score so you can decide whether to accept, warn, or block.
curl -X POST "https://your-domain.com/api/v1/verify?email=check@example.com" \
-H "X-Api-Key: ev_your_key_here"
What is the score for?
It helps you turn multiple signals into one action.
Does it replace ESP validation?
No. It complements your mail platform by filtering bad records early.
Integration pattern
Use a server-side API key, validate on the backend, and return a short JSON result to your signup or import flow. That keeps secrets out of the browser and lets you enforce policy before you create user records.
Production concerns
The important pieces are rate limits, error codes, billing state, and clear response shapes. If a verification API is hard to integrate or hard to explain, developers will either skip it or wire it incorrectly.
FAQ
Fatal error: Uncaught TypeError: e(): Argument #1 ($s) must be of type string, null given, called in /var/www/emailverify/views/marketing/blog-post.php on line 33 and defined in /var/www/emailverify/app/helpers.php:82
Stack trace:
#0 /var/www/emailverify/views/marketing/blog-post.php(33): e()
#1 /var/www/emailverify/app/helpers.php(9): require('...')
#2 /var/www/emailverify/app/Controllers/BaseController.php(4): view()
#3 /var/www/emailverify/app/Controllers/MarketingController.php(59): BaseController->view()
#4 /var/www/emailverify/app/Router.php(32): MarketingController->blogPost()
#5 /var/www/emailverify/public/index.php(13): Router->dispatch()
#6 {main}
thrown in /var/www/emailverify/app/helpers.php on line 82