mailX by mailwarm
mailX by Mailwarm is a comprehensive email deliverability toolkit designed for both humans and AI agents.
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Our verdict
Who it's for
Instantly diagnose and fix email deliverability issues with comprehensive DNS and email authentication checks.
Who should look elsewhere
No direct email sending or warming functionality (requires other Mailwarm products).
Pros
- +Completely free with no signup required.
- +Provides instant results from live DNS.
- +Offers clear, plain-English explanations and actionable fixes.
- +Supports both human users and AI assistants with API/MCP access.
- +No user data is stored, ensuring privacy.
Cons
- −No direct email sending or warming functionality (requires other Mailwarm products).
- −Focuses solely on diagnostics, not ongoing monitoring or automated fixes (requires MailAdept).
Key features
- ✓Live DNS Lookup Tools (A, MX, TXT, CNAME, PTR)
- ✓Email Authentication Checkers (SPF, DKIM, DMARC, BIMI)
- ✓Blacklist Checker (RBL / DNSBL)
- ✓Mail Server Tests (SMTP, IMAP)
- ✓DMARC, SPF, DKIM Generators
- ✓API & MCP access for AI agents
Pricing
No public pricing plans recorded.