1
MailGenius
Offers comprehensive email deliverability testing, including SPF, DKIM, DMARC, and blacklist checks with actionable fixes.
AI Tool
mailX by mailwarm Review
mailX by mailwarm is an email deliverability and DNS analysis toolkit that provides free email deliverability tests, DNS lookups, and IP lookups to analyze domain configurations.
aifreemium
1Offers a 100% free email deliverability test and DNS analysis toolkit, requiring no signup.
2Features an API and Model Context Protocol (MCP) server for programmatic integration by AI agents and custom software.
3Provides instant domain analysis, including checks for MX records, SPF, DKIM, DMARC, and blacklist status.
4Scans domains or IP addresses against over 100 spam blacklists (DNSBLs/RBLs).
mailX by mailwarm at a Glance
About mailX by mailwarm
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overview
What is mailX by mailwarm?
mailX by mailwarm is an email deliverability and DNS analysis tool developed by mailwarm that enables marketers, developers, and AI agents to diagnose and fix email deliverability issues. It provides a suite of tools for analyzing and optimizing email infrastructure and domain configurations. The platform's core function is to identify specific reasons why emails may not be reaching the primary inbox, offering actionable fixes. It was launched on Product Hunt on May 20, 2026, and is designed for both human users and AI agents, featuring an API and Model Context Protocol (MCP) server for programmatic access.
quick facts
Quick Facts
| Attribute | Value |
|---|---|
| Developer | mailwarm |
| Business Model | Freemium |
| Pricing | Free (currently 100% free, no signup required) |
| Platforms | Web, API |
| API Available | Yes |
| Integrations | AI agents (Claude, ChatGPT with plugins), Custom Software |
features
Key Features of mailX by mailwarm
mailX by mailwarm provides a comprehensive set of tools for email deliverability and DNS analysis, designed to offer detailed insights and actionable recommendations.
- 1Email deliverability test: Conducts a complete audit of email infrastructure in under 10 seconds.
- 2DNS lookup: Verifies various DNS records including A, MX, TXT, CNAME, and PTR.
- 3IP lookup: Analyzes IP address reputation and associated records.
- 4MX records checker: Confirms correct mail exchange record configuration.
- 5SPF, DKIM, DMARC checker: Validates email authentication records to prevent spoofing and improve deliverability.
- 6Blacklist status check: Scans domains and IP addresses against over 100 spam blacklists (DNSBLs/RBLs).
- 7SMTP server analysis: Tests SMTP server connectivity, configuration, and response times.
- 8Generate DNS records: Assists users in creating correct SPF and DMARC records.
- 9Test SMTP/IMAP server connectivity: Verifies mail server accessibility and functionality.
use cases
Who Should Use mailX by mailwarm?
mailX by mailwarm is designed for a diverse range of users who require robust email deliverability and DNS analysis capabilities, from individual marketers to AI agent developers.
- 1Marketers: For pre-campaign audits, monitoring email deliverability health for CRM flows, and troubleshooting low reply rates in cold email campaigns.
- 2Developers and IT Operations: For domain and mail server infrastructure management, verifying DNS configurations, and integrating programmatic email diagnostics via API.
- 3AI Agents: For automated, programmatic deliverability checks and authentication record generation through its Model Context Protocol (MCP) server and JSON API.
- 4Individuals and Businesses: For diagnosing and fixing email deliverability issues, analyzing domain configuration, and checking email authentication to prevent spoofing.
pricing
mailX by mailwarm Pricing & Plans
mailX by mailwarm operates on a freemium model. As of May 2026, the service is advertised as 100% free, requiring no signup for its core functionalities. This includes instant access to email deliverability tests, DNS lookups, IP lookups, and comprehensive checks for MX records, SPF, DKIM, DMARC, and blacklist status. While currently free, the 'freemium' designation suggests potential future premium features or usage-based tiers for advanced functionalities or higher usage limits.
- 1Free Tier: 100% free, no signup required, includes all core features for email deliverability and DNS analysis.
competitors
mailX by mailwarm vs Competitors
mailX by mailwarm differentiates itself in the email deliverability and DNS analysis market through its API-first design, Model Context Protocol (MCP) readiness for AI agents, and its focus on providing actionable, synthesized analysis rather than raw data.
1
MxToolboxโ
MxToolbox offers a comprehensive suite of free diagnostic tools for DNS, email, and network issues, making it a go-to for IT professionals.
Similar to mailX, MxToolbox provides extensive free tools for MX, SPF, DKIM, DMARC, and blacklist checks, but it also extends to broader network diagnostics. Both offer free tiers for essential checks, targeting users needing quick, detailed domain and email health assessments.
2
MailGeniusโ
MailGenius provides a unique spam score analysis and inbox placement previews across major email providers to help optimize email content before sending.
While mailX focuses on domain and IP health, MailGenius adds a layer of content-based deliverability testing and spam scoring. Both offer free checks, but MailGenius is more geared towards marketers optimizing email campaign performance.
3
EasyDMARCโ
EasyDMARC specializes in DMARC implementation and monitoring, offering advanced tools for validating and optimizing DMARC, SPF, and DKIM records.
EasyDMARC provides a deeper focus on DMARC, SPF, and DKIM record management and reporting compared to mailX's broader deliverability test. Both offer free checkers for these authentication protocols, but EasyDMARC extends to comprehensive DMARC policy management.
4
ZeroBounceโ
ZeroBounce is primarily known for its highly accurate email validation service, which helps maintain clean email lists and improve overall deliverability.
While mailX focuses on domain and IP infrastructure, ZeroBounce's core strength is email list hygiene, though it also offers free blacklist and DMARC checks. Both have freemium models, with ZeroBounce's free tier often tied to a number of email validations.
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Frequently Asked Questions
+What is mailX by mailwarm?
mailX by mailwarm is an email deliverability and DNS analysis tool developed by mailwarm that enables marketers, developers, and AI agents to diagnose and fix email deliverability issues. It provides a suite of tools for analyzing and optimizing email infrastructure and domain configurations.
+Is mailX by mailwarm free?
Yes, mailX by mailwarm operates on a freemium model and is currently advertised as 100% free, requiring no signup for its core functionalities, including email deliverability tests, DNS lookups, and IP lookups.
+What are the main features of mailX by mailwarm?
Key features include email deliverability tests, DNS lookup, IP lookup, MX records checking, SPF, DKIM, and DMARC validation, blacklist status checks against over 100 RBLs, SMTP server analysis, and tools to generate DNS records.
+Who should use mailX by mailwarm?
mailX by mailwarm is intended for marketers, developers, IT operations personnel, and AI agents who need to diagnose and fix email deliverability issues, analyze domain configurations, check email authentication, and test mail server connectivity.
+How does mailX by mailwarm compare to alternatives?
mailX by mailwarm differentiates itself by offering a synthesized, actionable analysis and an API-first, MCP-ready design for AI agent integration. Unlike tools like MXToolbox which provide raw data, mailX focuses on 'why' an issue exists and 'how to fix' it, and it offers a broader scope than content-focused tools like MailGenius or DMARC-specific tools like EasyDMARC.
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