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MailTester pricing: email verification API

MailTester's sitellms.txtEmail validation API: 160+ providers comparedMailTester: email verification API alternatives

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50% complete: 3 of the 6 key fields we checkSee the 6 fields
$0.00per 1,000 emailsIn our email verification API benchmark, MailTester's best plan scores 56.0 out of 100.This plan is free. We rank 3,338 plans for email verification APIs by price. Half the plans cost $1.98 per 1,000 emails or less.treg's top-up from $10 is the cheapest paid plan per 1,000 emails: $0.00 on average. treg asks one provider after another until one answers. You pay $68.365 per 1,000 emails when no provider answers.Disify's $9 monthly plan (/email) covers any number of emails. Disify's $9 monthly plan costs less up front than treg's top-up from $10.MailTester Ninja, Enrich.so and GetProspect are the best email verification API providers in our benchmark.
Plan: 100 free verifications one of MailTester's 16 plans
Call: POST /api/v1/verify MailTester's only call
API: Email verification API MailTester's only API

About this item

  • Live. MailTester checks the email when you call the API.
  • 3 of the 6 key fields we check. Address, Deliverability, Confidence.
  • Nothing to pay. You get 100 credits once, enough for 100 calls. Calls stop once your credits run out.
  • One call. You send email to POST /api/v1/verify. The call returns whether the address takes mail.
  • Who can get it: anyone with a new account, no credit card required. Keep data: no limit. Use data: with conditions.

MailTester: email verification API alternatives

MailTester alternatives: every email verification API provider ranked

The table starts with MailTester's cheapest paid plan. Next come plans from other providers with the price per 1,000 emails closest to MailTester's. Each plan in the table gives live data.

MailTester, $2,999 packBillionVerify, $720 yearly, Business, POST /verify/bulkNullBounce, $1,500 packBounceVerify, $150 pack, Ultimate, POST /api/verify/bulkVerifyHQ, $750 pack
$ per 1,000 emails$0.30$0.30$0.30$0.30$0.30
Completeness50%67%33%50%33%
Billingpay firstyearlypay firstpay firstpay first
Pay$2,999$720$1,500$150$750
Enough for10,000,000 calls2,400,000 results a year5,000,000 calls500,000 results2,500,000 calls
Freshnesslivelivelivelivelive
Who can get itanyoneanyone at least 18 years old and legally able to enter into a contract, for their internal business purposes onlyanyoneanyoneanyone

Sources

From each provider's own pricing page and docs, and from what providers tell us. We read this row from these pages on 2026-11-02.

  1. app.mailtester.com/agent-gateway/openapi.json
  2. mailtester.com
  3. mailtester.com/api-email-checker
  4. mailtester.com/faq
  5. mailtester.com/pricing
  6. mailtester.com/terms

Product details

The key fields this plan's answer can hold, then each filled column in its row on the sheet.

  • Address
  • Deliverability
  • Confidence
  • Name, not in the answer
  • Place, not in the answer
  • Company, not in the answer
Price
$ per 1,000 emails$0.00
Percall
Billingfree
Aggregators
Aggregatorsnone
Charges
Also pays fornothing else
Overage
Units caphard
Not found
$ per 1,000$0.00
Catch-all
$ per 1,000$0.00
In their words
Their pitchStop bad emails at the front door [...] fake, mistyped and disposable addresses never reach your database. REST, sane result codes, free tier.
Data
Freshnesslive
What it checksformat, mail servers, disposable domains, role addresses, mailbox
Keep datano limit
Use dataYou may only verify addresses you have a lawful basis to process. You may not use the service to facilitate spam, to validate harvested or purchased lists for unsolicited mail, or in violation of applicable law including the GDPR, CAN-SPAM and CASL.
Plan
Pay$0
You get100 credits
Enough for100 calls, once
Rate limit
Batch1
Speed
Answerin the call
Median0.64 s
The call
You sendemail
MethodPOST
Path/api/v1/verify
About the plan
Plan100 free verifications
Who can get itanyone with a new account, no credit card required
The 12 fields the plan's answer can hold

result, reason, score, role, free, disposable, accept-all, spam trap, did you mean, MX records, SMTP provider, email

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