Email verification,
built for engineers.
One API call returns disposable status, domain reputation, deliverability and a trust score — in under 100 ms. Catch fraud signups before they cost you.
Enter any email to check syntax, MX records, SPF, DMARC, disposable and role-based signals in real time. Protected by MailSift.
Every fraud signal in one call.
Disposable inboxes, relays, spam traps, typos, role addresses and 11 more checks — scored together so you can act on a single number.
Hard bounces
Non-existent mailboxes and dead domains caught before they hit your sender reputation.
Disposable inboxes
Throwaway addresses from 500k+ tracked providers, plus heuristics for new ones.
Relay forwarders
SimpleLogin, AnonAddy, Apple Hide My Email, Firefox Relay and friends.
Spam traps
Recycled and pristine traps that can blacklist your sending domain overnight.
Role addresses
Generic inboxes like info@, admin@, support@ that lower engagement and CTR.
Catch-all domains
Domains that accept any local part, masking whether the mailbox is real.
Domain typos
Suggests fixes for gmial.com, hotnail.com and other lookalikes in real time.
Domain age
Brand-new domains are flagged. Established providers get an integrity boost.
SPF & DMARC
Live DNS lookup validates the domain has proper email authentication set up.
MX provider
Identifies Google, Microsoft, Proton and dozens more — useful for routing logic.
DNSBL blacklists
Checks the sending domain against well-known DNS-based blocklists.
Free providers
Tags gmail.com, outlook.com and similar so you can route signups by audience.
Syntax & RFC
Strict parser rejects malformed addresses long before any network call.
p95 latency
Average response under 100 ms. We cache aggressively without staleness.
Greylisted IPs
Detects MX servers temporarily refusing connections — a classic fraud signal.
Trust score 0–100
Every signal rolls up into one score. Route by risk, not handwritten if-trees.
15+ checks. Every request.
Each call runs a comprehensive pipeline that goes far beyond basic syntax and MX validation.
One request. Complete intelligence.
A single GET request returns disposable status, domain reputation, risk score and 15+ checks. Try it live — runs against the production API.
Four layers, one verdict.
Raw email in. Routing decision out. Each layer runs in parallel and contributes to the final score.
Syntax & format
Strict RFC parser rejects malformed addresses long before any network call.
DNS & MX lookup
Resolves MX records, checks domain validity, detects disposable or parked domains.
Domain intelligence
Profiles the mail provider, checks domain age, and flags relay or catch-all setups.
Trust scoring
Combines all checks into a 0–100 score with structured signals you can act on.
Pay once. Use anytime.
No subscriptions. No expiry. Credits never burn.
- Single email verification
- 5 req/sec rate limit
- Basic syntax + MX checks
- Community support
- All 15+ verification checks
- Bulk upload (10k rows)
- 50 req/sec rate limit
- API access
- CSV export
- Everything in Starter
- Unlimited bulk rows
- 200 req/sec rate limit
- Webhook notifications
- Priority support
- Everything in Pro
- Dedicated support
- Custom integrations
- SLA guarantees
- Volume discounts
Start verifying in 60 seconds.
Grab an API key, drop in three lines of code, and stop fake signups before they hit your database. Free tier never expires.