Email · head-to-head
Email Validation vs MailCheck.ai
AbstractAPI's email verification endpoint checks format, deliverability, and quality signals such as disposable, free, and role-based addresses, returning an autocorrect suggestion and quality score per lookup. A free monthly quota is available before metered paid plans apply.
MailCheck.ai has rebranded to UserCheck, but its original keyless lookup endpoint keeps working unchanged: pass an address and get back disposable, free-provider, MX, and domain-age signals in one JSON response, aimed at blocking throwaway signups. The rebranded product adds a free-to-start paid tier for higher-volume, authenticated use.
| Email Validation | MailCheck.ai | |
|---|---|---|
| Authentication | API Key | None |
| Pricing | freemium | freemium |
| Formats | JSON | JSON |
| CORS | yes | yes |
| HTTPS | Yes | Yes |
MailCheck.ai needs no API key, while Email Validation requires API Key — pick MailCheck.ai to start without signup.