- You need to know where mail actually lands, not just its score. Unspam delivers to real seed inboxes at Gmail, Outlook, Yahoo, Zoho, ProtonMail and AOL and reports inbox vs spam for each.
- You want previews, an AI eye-tracking heatmap and an AI assistant in the same plan as the spam test, from $9/mo with a 14-day no-questions-asked refund.
- You want recurring checks: Unspam's Autopilot schedules inbox placement tests and alerts you when placement slips. Mail-Tester tests are one-off snapshots.
- You want a bigger, private free tier: 10 spam tests, 10 previews, 10 heatmaps and 3 inbox tests a month with no card. Mail-Tester's free results are visible to anyone with the test URL for 7 days.
// Unspam vs Mail-Tester
A Mail-Tester alternative that tests placement, not just a spam score
Mail-Tester is the long-standing free way to get a SpamAssassin spam score: send an email to a generated address, get a mark out of 10. Unspam runs the same kind of pre-send check, then adds seed-list inbox placement, client previews and an AI heatmap. Free tier included, paid plans from $9/mo.
Which one fits you?
- You only need an occasional sanity check: Mail-Tester gives 3 free tests per 24 hours with no account, plus a detailed per-rule SpamAssassin breakdown.
- You're embedding white-label spam testing in your own product: Mail-Tester's JSON API and iframe start at $10/mo. Unspam's API is gated behind the custom-priced White Label plan with no self-serve trial.
- You test at serious volume: Mail-Tester drops to roughly $0.03 per test at 25,000 tests a month.
Unspam vs Mail-Tester, feature by feature.
Based on public product pages and documentation. Spotted something outdated? Tell us in the chat and we’ll fix it.
Feature
Unspam
Mail-Tester
Free plan or trial
Free plan, no card
Free: 3 tests/day
First paid plan
$9/mo
$10/mo
Spam score testing
Yes
Yes
Inbox placement tests
Yes
—No
Client previews & screenshots
Yes
—No
AI attention heatmap
Yes
—No
Blacklist monitoring
Yes
Partialper test only
SPF / DKIM / DMARC checks
Yes
Yes
AI fix recommendations
Yes
—No
Scheduled automatic tests
Yes
—No
API access
YesWhite Label plan
Yes
Email verification
Yes
—No
Automated inbox warmup
—No
—No
DMARC report monitoring
Partialchecked per test
—No
Deliverability consulting
Yesseparate service
—No
What each one costs.
Mail-Tester prices are from the official pricing page, June 2026, excl. VAT. All paid plans are the same product at different volumes.
- Free $0
10 spam tests, 10 previews, 10 heatmaps, 3 inbox placement tests per month. AI assistant included.
- Basic $9/mo
50 spam tests, 50 previews, 10 heatmaps, 10 inbox placement tests per month. Historical results.
- Business $19/mo
200 spam tests, 200 previews, 50 heatmaps, 50 inbox placement tests per month. Historical results.
- Agency from $29/mo
500 spam tests, 500 previews, 250 heatmaps, 250 inbox placement tests per month.
- White Label Custom
Spam tests, previews, heatmaps, and inbox tests sized to your contract. Custom API access.
- 50 Tests / Month $10/mo (excl. VAT)
50 tests/month ($0.20 per test), JSON API + iframe integration, white-label/CSS customization, 30-day test history, usage stats, no ads
- 500 Tests / Month $25/mo (excl. VAT)
500 tests/month ($0.05 per test), same account features
- 2,000 Tests / Month $80/mo (excl. VAT)
2,000 tests/month ($0.04 per test), same account features; labeled 'Most Popular'
- 7,500 Tests / Month $250/mo (excl. VAT)
7,500 tests/month ($0.0333 per test), same account features
- 25,000 Tests / Month $700/mo (excl. VAT)
25,000 tests/month ($0.028 per test), same account features
- 25,000+ Tests / Month Custom (contact us)
Volume beyond 25,000 tests/month
Mail-Tester pricing and feature information was collected from publicly available sources in June 2026 and may have changed since; it is provided for general comparison only and is not guaranteed to reflect current offers. Confirm current pricing on the vendor's website. Mail-Tester is a trademark of its respective owner. Unspam is not affiliated with or endorsed by Mail-Tester.
Why teams move from Mail-Tester to Unspam.
A 10/10 score doesn't mean inbox
Users on Reddit report perfect Mail-Tester scores while 100% of their mail hit Outlook junk, and a 50-test study found 10/10 scores correlated with only ~73% Gmail inbox placement. Unspam runs seed-list placement tests across six providers so you see where each message actually lands.
A snapshot, not monitoring
Mail-Tester is a point-in-time SpamAssassin check: no scheduled tests, no placement monitoring, and blocklist lookups only run as part of each one-off test. Unspam's Autopilot runs recurring inbox placement tests with alerts, plus blacklist checks across 14+ services.
Previews and heatmaps in the box
Mail-Tester has no client previews or design analysis. Most adjacent tools on its site are outbound links to EasyDMARC. Unspam bundles device previews, an AI eye-tracking heatmap and an AI assistant into every plan, including the free one. Results in about 30 seconds.
// FAQ
Unspam vs Mail-Tester, answered.
Is Unspam a full replacement for Mail-Tester?
For testing, largely yes: Unspam covers spam scoring, SPF/DKIM/DMARC checks and blacklist lookups, and adds inbox placement, client previews and heatmaps that Mail-Tester doesn't offer. Two honest exceptions: Mail-Tester's self-serve white-label API starts at $10/mo, while Unspam's API requires the custom White Label plan. Neither tool does inbox warmup or ongoing DMARC aggregate-report monitoring.
How does pricing compare?
Mail-Tester's paid plans are listed at $10/mo for 50 tests (excl. VAT, as of mid-2026), scaling to $700/mo for 25,000. Unspam's Basic plan is $9/mo and includes 50 spam tests plus 50 previews, 10 heatmaps and 10 inbox placement tests, with a 14-day refund and 2 months free on annual billing. See pricing.
What's the biggest functional difference?
Inbox placement. Mail-Tester returns a SpamAssassin-based 0–10 score for a single message; Unspam also delivers test emails to real seed inboxes at Gmail, Outlook, Yahoo, Zoho, ProtonMail and AOL and reports inbox vs spam for each provider. See inbox placement.
How do the free tiers compare?
Mail-Tester allows 3 free tests per 24 hours with no account, and results stay accessible to anyone with the URL for 7 days. Unspam's free plan includes 10 spam tests, 10 previews, 10 heatmaps and 3 inbox placement tests per month, with the AI assistant included and no credit card required.
// see for yourself