Your emails deserve the inbox. We detect what is broken, show exactly how to fix it, and keep your deliverability stable.
3-step system: Find the problem → Fix it step-by-step → Keep it fixed.
1) Find the problem
2) Fix it step-by-step
3) Keep it fixed
Enter your domain and run an instant deliverability check.
Works seamlessly with your existing stack
Real-time visibility into your email stack with instant issue detection and guided fixes.
DMARC policy too lenient
Set policy to quarantine or reject for stronger protection.
Missing reverse DNS
Configure PTR record to improve trust and inbox placement.
Real results
Before MailFix
40% emails in spam
After MailFix
95% inbox delivery
Time
2 days
Find the problem. Fix it step-by-step. Keep it fixed.
DNS / Auth scan
Connect your domain and run authentication + reputation checks in seconds.
Issue detection
Pinpoint exactly what is broken (SPF, DKIM, DMARC, reputation) with clear priority.
Guided repair
Apply guided steps one-by-one or hand execution to our team when speed matters.
Regression guard
Keep it stable with scheduled checks and alerts before deliverability drops again.
Everything you need to keep inbox delivery stable.
Deep authentication checks with guided remediation and repair history.
Live SMTP verification and send reliability checks.
RBL and sender reputation signals — Checks on every plan (including Free) plus standalone quick checks.
Scheduled checks with email alerts on regressions on higher tiers.
Google, Microsoft, cPanel, Plesk and more — Starter and above.
Aggregate reporting and inbox placement experiments — Growth and above.
Bring external data into your workspace — Growth and above.
Notes, assignee, shareable repair links, weekly digest — see pricing for tiers.
"Our signup emails were landing in spam. MailFix found the issue in minutes."
"Finally, email monitoring that does not require endless manual debugging."
"We manage multiple clients and now keep every domain healthier by default."
Start free, then scale from first fixes to advanced monitoring and team scale.
New accounts begin on Free: explore the app and Checks, then upgrade when you need saved domains, in-app support chat, monitoring, and SuperTools workflows.
Start fixing core deliverability fast.
Keep your email stack healthy every day.
Scale deliverability with confidence.
Yes. Every new account starts on the Free plan — no credit card. You can explore the dashboard, Checks diagnostics, and onboarding; in-app support chat unlocks on Starter and above. Paid tiers add saved domains, monitoring, SuperTools workflows, and higher limits. See Pricing for details.
Join teams that use MailFix to keep transactional and campaign emails out of spam.