Free Email Verification Tool — No Credit Card, 100 Checks/Month

Many marketers ask: Is there a free email verifier that actually works?

Yes. And you don't need a credit card to start.

What You Get Free

• 100 verifications / month — resets automatically
• SMTP validation — full depth check, not just syntax
• Catch-all detection — flags catch-all domains
• Disposable detection — spots Mailinator, 10minutemail, etc.
• Email scoring — 0–10 confidence (not just pass/fail)
• API access — integrate into your app
• 1 Blacklist monitor — watch your domain reputation
• 1 monitored list — continuous list health checks

How to Use the Free Tool

1. Sign Up (30 seconds)

No credit card. Just email + password.

2. Single Check

Paste one email → get instant result (Valid, Invalid, Risky, Catch-All, Unknown)

3. Bulk Upload

Upload Excel (any number of columns) → download color-coded results

4. Use the API

curl -X POST https://api.email-validaton.com/verify \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -d '{"email": "test@gmail.com"}'

Why Free Works (For Most)

100 free checks = enough to stay in the game

• 100 emails = ~2–3 sales calls worth of lists
• Monthly reset = grows with your business
• Upgrade anytime if you need more

When to Upgrade

You'll know you're ready for paid when:
- You're hitting 100 checks by week 3
- You need DMARC report monitoring
- Your team all needs API access
- You want unlimited email finder searches

Monthly ($6/mo) for growing teams
One-time packs ($10–199) for freelancers & agencies

What "Free" Actually Includes (and What It Doesn't)

The free tier is not a demo. It runs the same engine as the paid plans:

• 100 verifications per month, reset on the first of each month
• Full SMTP validation — not a syntax-only check
• Catch-all and disposable detection
• 0–10 confidence score
• Single checks, bulk upload and API access
• 1 blacklist monitor and 1 monitored list

What it does not include: unlimited volume, DMARC report monitoring across many domains, team seats, and priority support. Those are paid features — and for most people testing the tool, they are not needed on day one.

What 100 Checks Per Month Is Actually Enough For

100 sounds small until you map it to real work:

• A solo founder validating every new signup: at 3 signups a day, that is 90 checks a month — enough.
• A freelancer cleaning a small client list: 100 addresses covers a one-off audit of a niche list.
• A developer testing an integration: 100 calls is plenty to confirm the API behaves the way you expect.
• An agency triaging a big list: use the free checks to sample 100 rows, estimate the invalid rate, then decide whether the full run is worth it.

The free tier is designed to answer one question honestly: does this tool actually find bad addresses? Sample a list you already know, compare the result with your bounce log, and decide from evidence.

How to Test a Real List in 10 Minutes

1. Pick a list you have already mailed. A past campaign export is ideal because you know which addresses bounced.
2. Take a sample of 100 — the free tier's limit. Keep the original columns so you can compare.
3. Upload the sample as CSV or XLSX, or paste the addresses.
4. Download the result and sort by status.
5. Compare the addresses marked Invalid with the ones that actually bounced. If they overlap heavily, the validator is doing its job.
6. Look at the catch-all count. In B2B lists it is often 5–15%; a tool that reports 0% on a B2B list is probably not checking properly.

That is a real evaluation — not a marketing claim, but your own data.

Reading Your First Results

Green — Valid

The mailbox answered. Send to these first.

Yellow — Risky

Greylisted, timed out, or temporarily refused. Retry in 24–48 hours before deciding.

Blue — Catch-All

The domain accepts everything, so the mailbox cannot be confirmed. Keep them, but expect lower engagement and send in smaller batches.

Red — Invalid

No such mailbox, dead domain, or disabled account. Remove them. This is the bucket that protects your sender reputation.

Grey — Unknown

The server did not respond. Usually a firewall or rate limit. Retry later rather than deleting.

A useful habit: never delete a whole status in one go. Export it, look at a sample, and only then apply a rule.

When the Free Tier Is Enough — and When It Isn't

Stay on free if you are validating signups, testing an integration, or cleaning a small list a few times a year.

Move to paid when one of these becomes true:

• You hit the monthly limit before the third week.
• You need to verify more than one list per month.
• You need DMARC monitoring or several blacklist monitors.
• Several people on the team need API keys.
• You are cleaning lists for clients and need a documented audit trail.

Paid plans start at a few dollars a month, and one-time credit packs exist for freelancers who do not want a subscription. The point is not to upsell you on day one — it is to make the upgrade decision obvious when it arrives.

Five Ways People Waste Free Checks

1. Verifying the same list twice. Deduplicate first; duplicates consume credits and teach you nothing.
2. Checking addresses you are about to delete anyway. Filter obvious junk before uploading.
3. Ignoring catch-alls. They are not "bad" — they are a segment. Deleting them throws away real leads.
4. Testing with fake addresses only. test@test.com proves nothing. Use a real export you can compare against bounces.
5. Not saving the result. Verification has a date. If you do not store it, you will pay to verify the same list again next month.

Is It Safe to Upload a List?

A legitimate verification service needs the addresses to run SMTP checks, so "we never see your data" is not a realistic promise. The right questions are:

• Is the transfer encrypted? Look for HTTPS on upload and API calls.
• Is the list stored, and for how long? Prefer services that process and discard, or that let you delete results.
• Is it used to build a database? Read the privacy policy for resale or enrichment language.
• Can you delete your account and data? A real service gives you a way out.

For regulated data, verify a hash or a masked list where possible, and keep the original file inside your own systems.

API Quickstart

If you are a developer, the API is the fastest way to see what the engine does.

curl

curl -X POST https://email-validaton.com/api/v1/verify \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email":"person@example.com"}'

Python

import requests

resp = requests.post(
    "https://email-validaton.com/api/v1/verify",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={"email": "person@example.com"},
    timeout=10,
)
print(resp.json())

JavaScript

const res = await fetch("https://email-validaton.com/api/v1/verify", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ email: "person@example.com" }),
});
console.log(await res.json());

In production, never block a signup form on a verification call. Queue the address, verify it asynchronously, and update the record when the result arrives.

Build a Verification Habit

Verification works best as a routine, not a rescue:

• At signup — check every new address. Reject obvious invalids, flag catch-alls.
• Before every campaign — re-verify the segment you are about to mail, even if it was clean last month.
• Quarterly — run the whole active list and compare the invalid rate with the previous quarter.
• After a purchase or import — treat every imported list as unverified until proven otherwise.

A simple spreadsheet column — "last verified" — turns verification from a one-off task into a measurable process.

Free vs Paid at a Glance

Start free, measure the results on your own list, and upgrade only when the limit or a specific feature becomes the bottleneck.

Frequently Asked Questions

Do I need a credit card to start?
No. Email and password are enough, and the monthly allowance resets automatically.

Does the free tier use the same SMTP checks as paid?
Yes. The difference is volume and a few monitoring features, not the core engine.

Will you email me marketing messages?
Only if you opt in. Account and verification emails are separate.

Can I use the free tier commercially?
Yes — validating client lists within the monthly limit is fine.

What happens when I hit the limit?
Checks stop until the next reset, or you can buy a credit pack. Nothing is deleted.

Common Signup-Form Mistakes

Verification is only useful if the form gives it a chance to work:

• Accepting everything. A client-side regex that allows a@b lets junk through. Validate on the server too.
• Blocking without feedback. If an address is invalid, say why and suggest a correction — "did you mean gmail.com?" recovers real users.
• Blocking all catch-alls. A catch-all is not a fake address. Flag it, let the signup through, and verify engagement later.
• No double opt-in. For newsletters, a confirmation email is the cheapest possible verification: it proves both deliverability and intent.
• Silent failures. Log the verification result next to the user so support can answer "why didn't I get the email?".

A form that rejects obvious typos and confirms intent will do more for list quality than any single bulk run.

Start Free Today

Get 100 free verifications →

No credit card. No spam. Real SMTP validation.