Mailproof verifies any address in real time — catching invalid, disposable, and risky emails so your campaigns hit real inboxes and your sender reputation stays clean.
Once in wasted sends, and again in deliverability damage that hurts the inbox rate of every future email.
Real users mistype their address — we catch it and suggest the fix.
Made-up emails at signup inflate your list and never convert.
Disposable and bot signups poison your metrics and your reputation.
Ambiguous domains flagged so you can decide before you send.
A full validation pipeline runs on every address — in milliseconds.
RFC 5322-compliant parsing rejects malformed addresses and illegal characters instantly.
Live DNS lookups confirm the domain actually exists and can receive mail.
Flags thousands of throwaway providers like Mailinator and TempMail.
SMTP-level checks confirm whether the mailbox can actually receive mail, with catch-all detection.
Upload a list and validate thousands of addresses with a live progress bar and CSV/Excel export.
A clean JSON REST API drops into any stack in minutes. Structured, predictable responses.
Paste an email, upload a list, or POST to the API. We normalize and parse it first.
Syntax, MX, disposable, role, catch-all and mailbox checks all fire in sequence.
A deliverability result — deliverable, undeliverable or risky — with the reason and a score.
Start free. Upgrade only when you need volume. 1 credit = 1 verification.
For trying it out.
100 credits / month
For growing senders.
10,000 credits / month
For high-volume teams.
50,000 credits / month
For platforms at scale.
200,000 credits / month
Slide to your volume — from 1,000 to 10 million credits. The more you buy, the less each verification costs.
One POST request returns a structured verdict you can act on. No SDK required, no surprises.
$ curl -X POST https://yourdomain.com/api/validate \
-H "Content-Type: application/json" \
-d '{"email":"test@gmial.com"}'
{
"verdict": "Risky",
"score": 45,
"suggestion": "test@gmail.com"
}"Cleaned over 50,000 emails from our database and our reputation score improved dramatically. Delivery rates up 40%."
Alexandra Kim
Growth Lead
"The API integrated with our signup flow in an afternoon. It accurately blocks fake and disposable addresses before they register."
David Thompson
Founder, SaaS
"Simple, fast and reliable. The bulk tool with CSV export is exactly what our marketing team needed — no complexity."
Isabella Romano
Marketing Manager
One credit verifies one email address. A bulk run of 100 emails uses 100 credits.
Yes — the Free plan includes 100 verifications every month, no credit card required.
It's a limited-time launch promotion applied automatically. Subscribe now and the rate stays locked in while your subscription is active.
Anytime — upgrade, downgrade or cancel, and top up with credit packs whenever you need extra headroom.
Start validating free — no credit card, no setup. See the difference on your very first list.