Format
Reject impossible addresses immediately.
Catch malformed addresses and common domain typos before they enter your product.
#1 Email verification API for developers
Stop bad emails
before they get in.
Catch malformed, disposable, role-based, and unroutable addresses before they create fake accounts, wasted trials, and unusable leads.
Syntax
Domain status
Disposable
Mailbox status
From email address to a decision.
Format
Reject impossible addresses immediately.
Catch malformed addresses and common domain typos before they enter your product.
Syntax valid
Domain
Confirm the domain can receive email.
Confirm the domain can receive email and identify known disposable or free mailbox providers.
Domain can receive email
Mailbox
Check whether the inbox looks reachable.
Check the complete address and return unknown whenever the result is not clear.
Mailbox looks reachable
Decision
Return one answer your product can use.
Act on deliverable, risky, undeliverable, or unknown with no extra interpretation.
Deliverable
Keep bad signups out.
Keep good users moving.
Approve good addresses faster and stop fake accounts before they consume trials, seats, sales time, or customer data.
Cleaner data
Reject addresses that cannot work
Catch malformed addresses, typos, and domains that cannot receive email before they enter your product.
Less abuse
Stop disposable signups
Protect trials and promotions from temporary providers and risky role accounts.
Honest results
Keep uncertainty visible
When a provider does not give a clear answer, the result stays unknown instead of rejecting a legitimate user.
Easy automation
Act on one stable result
Route deliverable, risky, undeliverable, and unknown addresses straight into your product logic.
Your first verification takes one request.
Use REST from any stack, generate a typed client from OpenAPI, or call the same verifier through MCP.
terminalcurl
$ curl -X POST https://emailverifier.dev/api/v1/verify \ -H "Content-Type: application/json" \ -d '{"email":"hello@company.com"}' # → { "email": "hello@company.com", "status": "deliverable", "score": 92, "reason": "mailbox_accepts_mail", "suggestion": null }
Domain intelligence
Check a domain before you trust it.
See whether a provider is disposable, a known free mailbox service, or not classified as either.
Explore domain reportsKeep bad emails out of every funnel.
Add one request to signup, free trials, lead forms, or CRM imports—and act on the same clear response everywhere.
Public demo
10
checks per hour
with no signup