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About MailValid

Built to make email verification simple, honest, and cheap

MailValid checks if an email address is real before you send it.

No bloated dashboard No 12-month credit expiry No pricing math

What MailValid does

MailValid verifies email addresses. Give us one address, or a whole list. We tell you if it is safe to send to. Every check runs through three steps.

1

Syntax check

Catches typos and bad formats right away.

2

Domain and MX check

Confirms the domain exists, and that it can receive mail.

3

Mailbox check

Confirms the mailbox is real. We never send a real email to test it.

You get a clear verdict, plus flags for disposable addresses, role inboxes like info@, and free providers like Gmail.

valid invalid catch-all do-not-mail

Why we built it this way

Three decisions shape MailValid. Each one fixes a real problem teams told us about other verification tools.

1. Show the real price. No sales call needed.

MailValid costs from $0.0008 per email on MailValid Plus. That is $129 a month to check 100,000 addresses. ZeroBounce charges $350 for the same volume and NeverBounce charges $800, on each provider's published rates as of July 2026. Same accuracy tier. No sales call required.

2. Credits should never expire

Most competitors expire unused credits after 12 months. A slow quarter then costs you money you already spent. MailValid credits roll over forever — free, plan, or pay-as-you-go. Email lists decay 20–30% a year on average, so we built pricing around your schedule, not ours.

3. One engine, every workflow

Paste one address in the browser. Upload a CSV. Call the REST API. Connect an AI agent by MCP. However you check, you get the same engine, the same accuracy, and the same credit balance.

What we have verified so far

10M+
Emails Verified
99%
Accuracy Rate
<500ms
Avg API Response Time
99.9%
Uptime SLA

Who uses MailValid

SaaS teams, agencies, recruiters, and sales teams use MailValid to keep their sender reputation clean. Here is what customers say.

"MailValid cut our email bounce rate by 90%. We switched from ZeroBounce and saved over $300 a month. The API is dead simple to integrate and the accuracy is spot on."
N

Nikhil

10ex.ai

"I use MailValid as a pre-send verification step in a cold email pipeline. It reliably catches invalid, disposable, and syntax/MX failures. The status_reason field is genuinely useful — I allow role addresses by policy, and the granularity makes it a one-line decision rather than guesswork."
O

Oded Vilner

W2M LIMITED

"Lightning-fast email verification in under 500ms. Email verification takes less than 500ms. We use it to verify candidate lists and clean our ATS before outreach. Removing invalid emails meant more of our outreach actually reached people."
A

ASH M.

"MailValid delivers fast responses and flexible, non-expiring credits. MailValid has a really quick response time. Even after I cancelled my subscription, the email verification credits did not expire. MailValid is very affordable. The email verification results are value for money and accurate."
A

Awan Y.

"An intuitive, cost-effective tool with fantastic, responsive support. The tool is very intuitive, and the support team is fantastic — helpful and very responsive. I highly recommend this tool, as it’s also very cost-effective."
M

Mark I.

Built for AI agents

MailValid runs an MCP server alongside the REST API. Claude, Cursor, and other MCP clients can call it directly. Same pricing, and the same credit balance as everyone else.

Two of the MCP tools work without an API key, so an agent can try verification before you connect an account.

See the integrations

Frequently asked questions

How is MailValid different from ZeroBounce or NeverBounce?
Price and expiry. MailValid charges $129 per 100,000 emails on MailValid Plus. ZeroBounce charges $350 for the same volume and NeverBounce charges $800, on each provider's published rates as of July 2026, at similar 99% accuracy. MailValid credits also never expire. Many competitors expire credits after 12 months.

Does MailValid support AI agents?
Yes. MailValid runs an MCP server for Claude, Cursor, and other MCP clients. It uses the same engine, pricing, and credit balance as the REST API.

Do MailValid's credits actually never expire?
Yes. Free, plan, and pay-as-you-go credits all roll over indefinitely. If you cancel a paid plan, credits already in your balance stay yours; you just stop earning new monthly credits.

Is MailValid good for agencies managing multiple client lists?
Yes. Credits never expire and there is no per-client account limit, so agencies can verify unlimited client lists on one account.

What happens if MailValid's accuracy falls short on my list?
MailValid guarantees 99% accuracy. On a batch of 1,000+ verifications, if you can show the bounce rate came in below that with batch ID and bounce data, MailValid will credit your account for the misverified emails. See the refund policy for the full terms.

Can I try MailValid before signing up?
Yes. Check one email free in the browser with no account. Sign up for 100 free credits, no credit card required, to test bulk upload, the API, or MCP.

Can I request my data be deleted?
Yes. Under GDPR and similar laws, you can request access to, correction of, or deletion of your data by contacting sachin@mailvalid.io. MailValid responds within 30 days.

What happens to my credits if I get charged twice, or the service goes down?
Duplicate charges are fully refunded. If the service is unavailable for more than 48 straight hours while you are trying to use it, you can request a prorated refund for unused credits from that period.

Try it before you commit

Check one email free. No account needed. Sign up for 100 free credits to test bulk upload, the API, or MCP. No credit card needed either.

Get 100 Free Credits See pricing View API docs