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Mail-Tester

mail-tester.com

From $10/mo WebAPI
Visit mail-tester.com
Spec score 7.6 #22 of 31 in Email Deliverability Software

What it is

Mail-Tester checks an email, its mail server, and sending IP, then gives a spam score and reports configuration findings. To run a test, send a message to an address generated by the service and open the result page. Checks include blocklists, SpamAssassin, SPF, DKIM, Sender-ID, DMARC, links, and pictures. The free plan allows three tests within a rolling 24-hour period. A test counts after a new message is sent, the result page is requested, and the result is returned successfully; reopening that result does not use another test. Free results remain available for 7 days. With an account using its own prefix, results remain available for 30 days. Accounts also provide white-labeling, result-page CSS customization, statistics, a 30-day test listing, and pages without ads. Paid plans include an iframe and JSON API for integration; API output can include message details, authentication checks, body analysis, blacklist results, and broken links. One-time test bundles cost $5 as a one-time purchase to $250, paid once; monthly plans cost $10 a month to $250 a month. Passing does not guarantee inbox placement.

Spec sheet

Purpose
Mail-Tester analyzes an email, its mail server, and sending IP, then reports what is configured properly and what is not.Read 7 Oct 2026 · mail-tester.com
Audience
The maker describes the micro-payment option for email marketing tools that let their customers test newsletters before sending them.Read 7 Oct 2026 · mail-tester.com
Privacy
The privacy notice says the service collects account and payment information and warns that information sent electronically may not be secure in transit.Read 7 Oct 2026 · mail-tester.com
Support
The FAQ directs users to contact the maker for API help and translation files.Read 7 Oct 2026 · mail-tester.com
Headquarters
Dover, Delaware, USARead 28 Sep 2026 · mail-tester.com
Account features
An account enables white-labeling, result-page CSS customization, test statistics, a 30-day test listing, and test pages without advertisements.Read 7 Oct 2026 · mail-tester.com
Analysis
The maker says it tests against blocklists, SpamAssassin, SPF, DKIM, Sender-ID, and DMARC, and also tests links and pictures.Read 7 Oct 2026 · mail-tester.com
API and embedding
Paid plans include an iframe and JSON API to integrate Mail-Tester results into other software.Read 7 Oct 2026 · mail-tester.com
Developer details
The JSON API can return test results including message information, SpamAssassin findings, authentication checks, email body analysis, blacklist results, and broken links.Read 7 Oct 2026 · mail-tester.com
Free usage limit
The service allows 3 free tests within the last 24 hours.Read 7 Oct 2026 · mail-tester.com
How to test
The service generates a random email address; send a message there and open the result page to receive a spam score.Read 7 Oct 2026 · mail-tester.com
Integrations and commission
The micro-payment mode lets software providers embed tests and receive 40% of the amount users spend, excluding VAT.Read 7 Oct 2026 · mail-tester.com
Known limitation
The maker cautions that passing Mail-Tester does not guarantee inbox placement because spam filters and user preferences differ.Read 7 Oct 2026 · mail-tester.com
Result retention
Free results remain accessible for 7 days, while results from an account using its own prefix remain accessible for 30 days.Read 7 Oct 2026 · mail-tester.com
Test counting
A test is counted when a new email is sent, the result page is requested, and the result is successfully returned; reopening the same result does not count as another test.Read 7 Oct 2026 · mail-tester.com

Plans and prices

10 Tests $5, paid once One Time Payments 10 tests · $0.5000 per test Read 7 Oct 2026 · mail-tester.com
20 Tests $10, paid once One Time Payments 20 tests · $0.5000 per test Read 7 Oct 2026 · mail-tester.com
50 Tests / Month $10 a month Monthly 50 tests/month · $0.2000 per test · price excl. VAT Read 7 Oct 2026 · mail-tester.com
500 Tests / Month $25 a month Monthly 500 tests/month · $0.0500 per test · price excl. VAT Read 7 Oct 2026 · mail-tester.com
50 Tests $25, paid once One Time Payments 50 tests · $0.5000 per test Read 7 Oct 2026 · mail-tester.com
500 Tests $50, paid once One Time Payments 500 tests · $0.1000 per test Read 7 Oct 2026 · mail-tester.com
1 000 Tests Most Popular $80, paid once One Time Payments 1 000 tests · $0.0800 per test Read 7 Oct 2026 · mail-tester.com
2 000 Tests / Month Most Popular $80 a month Monthly 2 000 tests/month · $0.0400 per test · price excl. VAT Read 7 Oct 2026 · mail-tester.com
5 000 Tests $250, paid once One Time Payments 5 000 tests · $0.0500 per test Read 7 Oct 2026 · mail-tester.com
7 500 Tests / Month $250 a month Monthly 7 500 tests/month · $0.0333 per test · price excl. VAT Read 7 Oct 2026 · mail-tester.com

Every Mail-Tester plan and price →

Strong points and limits

Strong points

  • Checks authentication, blocklists, links, and pictures.
  • Three free tests within the last 24 hours.
  • Free results stay accessible for 7 days.
  • Paid plans include iframe and JSON API.

Limits

  • Passing does not guarantee inbox placement.
  • Free plan limits testing to three tests per 24 hours.
  • Some result details require paid integration plans.

Who it suits

Mail-Tester suits email senders who want to review message and server configuration before sending, and software providers embedding newsletter checks. Its API and iframe support integration, while the maker’s micro-payment mode lets providers receive 40% of user spending, excluding VAT.

Verdict

Mail-Tester combines a free allowance with detailed message checks and options for software integration. Treat its score as a diagnostic result, not a promise of inbox delivery.

Where Specifiction places it

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