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Alternatives · Deliverability

Mail-Tester alternatives

As of Nov 13, 2026, the best Mail-Tester alternative for most people is GlockApps (2.2 GPA), third in our ranking of email verification and deliverability tools. It's also the best free one.

Mail-Tester compared with 7 alternatives: GlockApps, MxToolbox, MailReach, Warmy, InboxAlly and 2 more.

Mail-Tester has a free plan. Paid plans start at $10 per month for 50 tests; or $5 once for 10 tests. 3 of the 7 alternatives are free or have a free plan. 3 more offer a free trial.

Listings checked up to Nov 13, 2026 · Where the facts come from

Black Friday: is there a Mail-Tester sale?

At a glance

ToolPriceFree planRuns on
Mail-TesterThis toolFree plan · from $10/moYesWeb
GlockAppsFree plan · from $59/moYesWeb
MxToolboxFree plan · from $129/moYesWeb
MailReachFrom $20/moNoWeb
WarmyFree trial · from $49/moTrial onlyWeb, Browser extension
InboxAllyFree trial · from $149/moTrial onlyWeb
Email on AcidFree trial · from $99/moTrial onlyWeb
MailGeniusFree plan · from $23/moYesWeb

Price against what you get

Mail-Tester starts at $10 a month and scores 2.7 out of 4 on features, ease of use and platforms. None of the 7 alternatives on this chart both scores higher and starts lower.

Features, ease of use and platforms, averaged

D1.0C2.0B3.0A4.0Free$1$2$5$10$20$50$100$200$500$1kMore for lessCosts more, scores moreCosts less, scores lessCosts more, scores lessMail-TesterGlockAppsMxToolboxMailReachWarmyInboxAllyMailGenius

What paid plans start at, a month (each step along is roughly double) →

  • The best score at each price
  • Has a free plan
  • No free plan
The full chart of email verification and deliverability tools, and the best at every price

How each one differs from Mail-Tester

  1. GlockApps

    Inbox placement testing with DMARC analytics and uptime monitoring

    • GlockApps starts at $59 per month, billed annually ($85 monthly).
    • GlockApps also covers dMARC.
    • GlockApps does not cover reports, which Mail-Tester does.

    Suits: Senders who want to see where a campaign lands before it goes out

    GlockApps vs Mail-TesterGlockApps pricing and details

  2. MxToolbox

    Email and DNS lookups plus blacklist and DMARC monitoring

    • MxToolbox starts at $129 per month.
    • MxToolbox also covers dMARC.

    Suits: Admins who want free lookups and one monitored domain at no cost

    MxToolbox vs Mail-TesterMxToolbox pricing and details

  3. MailReach

    Email warm-up and inbox placement tests, priced per mailbox

    • MailReach starts at $20 per mailbox / month, billed annually ($25 monthly).
    • MailReach has no free plan, unlike Mail-Tester.
    • MailReach also covers inbox warm-up.
    • MailReach does not cover reports, which Mail-Tester does.

    Suits: Cold emailers warming new mailboxes before a campaign

    MailReach vs Mail-TesterMailReach pricing and details

  4. Warmy

    Email warm-up with seed testing, verification and DMARC monitoring

    • Warmy starts at $49 per month and up.
    • Warmy has no free plan, only a free trial, unlike Mail-Tester.
    • Warmy also lists a browser extension.
    • Warmy also covers email verification, inbox warm-up and dMARC.
    • Warmy does not cover reports, which Mail-Tester does.

    Suits: Senders who want warm-up, verification and DMARC on one bill

    Warmy vs Mail-TesterWarmy pricing and details

  5. InboxAlly

    Email warm-up and reputation repair through a network of seed inboxes

    • InboxAlly starts at $149 per month for 100 seed emails a day, billed monthly.
    • InboxAlly has no free plan, only a free trial, unlike Mail-Tester.
    • InboxAlly also covers inbox warm-up.
    • InboxAlly does not cover reports, which Mail-Tester does.

    Suits: Senders whose domain already lands in spam and needs repair

    InboxAlly vs Mail-TesterInboxAlly pricing and details

  6. Email on Acid

    Email previews and pre-send QA, now moving to Mailgun Inspect

    • Email on Acid starts at $99 per month.
    • Email on Acid has no free plan, only a free trial, unlike Mail-Tester.
    • Email on Acid also covers email campaigns.

    Suits: Email developers testing HTML across many clients

    Email on Acid vs Mail-TesterEmail on Acid pricing and details

  7. MailGenius

    Email spam-score and deliverability tester with DNS checkers

    • MailGenius starts at $23 per month for 60 email tests, billed yearly ($29 billed monthly).
    • MailGenius also covers dMARC.
    • MailGenius does not cover reports, which Mail-Tester does.

    Suits: Marketers checking a campaign for spam triggers before sending

    MailGenius vs Mail-TesterMailGenius pricing and details

Limits worth knowing in Mail-Tester

  • Scores come from a stock SpamAssassin setup; the FAQ says other spam filters differ, so a perfect score does not guarantee inbox placement.
  • The free version allows 3 tests in 24 hours and keeps results for 7 days; an account with your own prefix keeps them 30 days.
  • Prices exclude VAT.
  • It tests one message at a time and does not monitor sending over time.
Mail-Tester pricing and details

Common questions

What are the alternatives to Mail-Tester?

The alternatives to Mail-Tester in this directory are GlockApps, MxToolbox, MailReach, Warmy, InboxAlly, Email on Acid and MailGenius. Each one has a side-by-side comparison with Mail-Tester.

Is there a free alternative to Mail-Tester?

Yes. GlockApps, MxToolbox and MailGenius have a free plan alongside paid ones.

When were these prices checked?

Each listing shows its own date. On this page they run from Oct 18, 2026 to Nov 13, 2026. Vendors change prices without notice, so confirm on their site before you buy.