Most tools tell you DKIM failed.
MailTest tells you why.
12 deliverability checks. Root-cause diagnosis. Targeted fixes. Free, no signup required.
WHAT DOES MAILTEST CHECK?
Email deliverability is the ability of marketing and transactional emails to reach recipient inboxes rather than spam folders. MailTest runs 12 deliverability checks — SPF, DKIM, DMARC, blacklists, SpamAssassin, rDNS, BIMI, MTA-STS, TLS-RPT, ARC, content scoring, and inbox placement — to show exactly why your emails fail and how to fix them. Free tier forever. Self-hostable via Docker.
Works with your entire email infrastructure
Why are my emails going to spam?
Most teams find out too late.
of emails never reach the inbox
Industry average across all sending domains. Most senders don't realize until open rates collapse — by then it's too late.
tools needed to diagnose one problem
Spam checker, DMARC monitor, warmup service, inbox placement tester, blacklist monitor — five separate subscriptions.
per month for the same coverage
Stack five tools and you pay $176/mo before writing a single fix. Mailtest covers all of it for $49.
Which checks actually
diagnose inbox failure?
How does inbox placement testing work?
See exactly where your emails land — inbox, spam, or promotions — across Gmail, Outlook, Yahoo, and 15+ providers.
How does spam risk scoring work?
Run your email through 10 spam filters before sending. Fix issues before they cost you open rates.
Which authentication checks does MailTest run?
SPF, DKIM, DMARC, MTA-STS, BIMI, rDNS, and TLS — every authentication layer checked in one pass.
How does continuous blacklist monitoring work?
Continuous scan across 42 real-time blacklists. Get alerted the moment your IP or domain appears.
How do domain health alerts protect my sender reputation?
Scheduled tests run silently in the background. Get Slack or webhook alerts before deliverability degrades.
How does automated IP warm-up improve deliverability?
Ramp up sending volume intelligently with automated warm-up schedules and real-time reputation tracking.
Can I benchmark against competitors?
Benchmark your email infrastructure against competitors. See if they're sending from warmed IPs with valid auth.
Does MailTest have a developer API?
Full REST API with webhooks. Integrate deliverability checks into your CI/CD pipeline or send platform.
What capabilities does an all-in-one deliverability platform need?
How do I check my email
deliverability in 3 steps?
Add your domain
Enter any domain or email address. No DNS changes, no code, no setup — just a domain name.
Run the scan
12 checks run in parallel: authentication, blacklists, spam scoring, inbox placement, and more.
Fix with confidence
Each check shows the current value, pass/fail status, and a targeted fix guide. No guesswork.
Who benefits most
from email deliverability testing?
Email Marketers
Stop sending into the void
Test every campaign before it sends. Verify your domain health, warm up new IPs, and monitor your reputation across all major providers.
- Pre-send deliverability check
- Inbox placement by provider
- Campaign monitoring
SaaS Product Teams
Don't let transactional email kill your product
Password resets, notifications, receipts — if they go to spam, your product breaks. Know before your users do.
- API integration for CI/CD
- Transactional email testing
- Automated alerts
Email Agencies
One dashboard for every client
Manage deliverability for multiple domains from a single account. Scheduled scans, white-label reports, and team access.
- Multi-domain management
- PDF report export
- Team collaboration
Sales Teams
Outreach that actually reaches
Cold email only works if it lands in the inbox. Warm up your domain properly, verify auth records, and protect your sender reputation.
- Domain warm-up automation
- Sender reputation scoring
- Blacklist monitoring
What results do teams see
after fixing deliverability?
checks in parallel
Every authentication layer (SPF, DKIM, DMARC), blacklists, content scoring, and infrastructure checks — diagnosed simultaneously, not sequentially.
to diagnose any domain
12 checks run in parallel. No waiting, no queues. Enter a domain and get a full picture in seconds.
tools replaced
Replace your spam checker, blacklist monitor, warmup tool, inbox tester, and DMARC reporter — all in one dashboard.
How many tools does
MailTest replace?
Five tools, five dashboards, five passwords. And you still don't have the full picture. Mailtest consolidates every deliverability workflow into one.
5 tools stacked
$176/monthMailtest Team
$39/monthMailtest Team plan
all features included
How much does
MailTest cost?
Annual billing saves 20% · All plans include PDF reports and CLI access
Try it out
- 3 tests / day
- 12 checks (3/day limit)
- Public result links
- Basic PDF reports
- Domain monitoring
- IP warm-up
- Inbox placement
- API access
- SLA
Early Access · Most Popular
- 200 tests / month
- All 12 checks
- Domain monitoring
- API access
- Full PDF reports
- IP warm-up
- Inbox placement
- SLA
For teams at scale
- 500 tests / month
- All 12 checks
- Domain monitoring
- IP warm-up
- Inbox placement
- API access
- PDF reports
- SLA
For agencies & teams
- Unlimited tests
- All 12 checks
- Domain monitoring
- IP warm-up
- Inbox placement
- API access
- SLA + priority support
Why I'm building
MailTest
“I built MailTest after spending hours debugging why our transactional emails landed in spam despite passing every check. Existing tools said ‘DKIM passed’ — none said WHY Gmail still hated us.
MailTest is in open beta. If you're stuck in the same place, I'd love your feedback. The first 100 users get lifetime Pro pricing locked at $19/mo.”
Sabahattin Kalkan
Solo founder · Baku 🇦🇿
How do I add deliverability
checks to my CI pipeline?
Add deliverability checks to your CI/CD pipeline. Run via CLI, call the REST API, or use our GitHub Actions integration.
What are the most common
email deliverability questions?
Can't find what you're looking for? Email us →
Stop guessing.
Start knowing.
No credit card required. Free tier never expires. 12 checks. Results in under 5 seconds.