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mailX

mailX

AI

Web-based email deliverability and network diagnostics: DNS, SPF, DKIM, DMARC, MX, blacklist and SMTP checks for domains.

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Free Available
Starting from Free

About mailX

mailX is a web service that analyzes email deliverability and network configuration for domains. It provides DNS and IP lookups, inspects MX records, verifies SPF, DKIM and DMARC configurations, checks blacklist status and inspects SMTP servers to diagnose deliverability issues. mailX also publishes an MCP server and a catalog of agent skills that allow AI agents to run automated diagnosis and remediation workflows (used by integrations like Claude/agent skills). The tool is aimed at developers, deliverability engineers, and administrators who need fast, actionable diagnostics for email routing and authentication problems.

Screenshots

mailX screenshot 1
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Key Features

DNS and IP Lookup: Performs instant DNS and IP lookups for domains to reveal A, AAAA, NS and related records and surface configuration problems that affect mail delivery.
SPF, DKIM and DMARC Validation: Parses and validates SPF records, DKIM selectors and DMARC policies to identify misconfigurations, missing records, or syntactic issues that break authentication.
MX and SMTP Inspection: Checks MX records and actively probes SMTP servers to confirm connectivity, banner responses, TLS negotiation and common SMTP errors that cause delivery failures.
Blacklist and Reputation Checks: Queries common public blacklists and reputation sources to report whether sending IPs or domains are listed and explains implications for delivery.
Email Deliverability Report: Generates an aggregate deliverability analysis with actionable recommendations to fix authentication, DNS or SMTP configuration problems.
MCP Server & Agent Skills Integration: Provides an MCP server and a published skills catalog (SKILL.md) enabling AI agents (e.g., Claude skills) to execute automated diagnosis and remediation workflows using mailX tooling.
Web-based DNS and IP lookup
MX record inspection and analysis
SPF record parsing and validation
DKIM signature verification
DMARC policy and alignment checks
Blacklist status lookup for IPs/domains
SMTP server connectivity and configuration checks
MailX MCP server for executing tools remotely
Agent Skill catalog (SKILL.md) for Claude/agent integrations
Documentation and installation guide for MCP server (themailx.com/mcp/docs)

Use Cases

Pre-send Campaign Validation: Verify SPF/DKIM/DMARC and MX records for a sending domain before launching an email campaign to reduce bounce and spam-folder placement.
Deliverability Troubleshooting: Diagnose why a specific domain or IP is failing authentication or being rejected by recipient servers by inspecting SMTP responses and auth records.
Blacklist Monitoring and Remediation: Regularly check sending IPs and domains against public blacklists and obtain guidance to delist or remediate reputation issues.
CI/CD Configuration Checks: Integrate DNS and SMTP validations into deployment pipelines to ensure new services or mail servers are configured correctly before production rollout.
Automated Agent-driven Fixes: Use the mailX MCP server and published agent skills to let AI assistants run diagnostic workflows and suggest or apply fixes for deliverability problems.
Integration with Support Workflows: Provide support teams with one-click diagnostics to collect domain, DNS and SMTP data to expedite incident resolution and configuration guidance.
Diagnose and fix email deliverability issues for domains and sending infrastructure
Pre-send checks for marketing/transactional email campaigns to reduce bounces and spam placement
Automated domain health checks integrated into CI/CD or monitoring pipelines
Enable AI agents (e.g., Claude) to perform live email deliverability diagnostics via MailX Skills and MCP server
Investigate blacklist listings and SMTP connectivity problems during incident response

Frequently asked questions about mailX

What is mailX?

mailX is a free tool designed for email deliverability testing, DNS lookups, and IP lookups. It allows users to check essential email protocols like MX records, SPF, DKIM, DMARC, and blacklist status, along with verifying SMTP servers, ensuring your domain is configured correctly for optimal email delivery.

Key Points

  • Comprehensive Email Testing: Assess your email setup thoroughly.
  • DNS and IP Lookup: Quick insights into your domain's DNS configuration.
  • Real-time Analysis: Instant feedback on email deliverability issues.

Detailed Explanation

mailX is an essential tool for businesses and individuals looking to improve their email deliverability. It analyzes various components critical to successful email delivery:

  1. MX Records: mailX checks your domain's Mail Exchange (MX) records to ensure they are correctly configured. This is vital for directing emails to the right servers.

  2. SPF, DKIM, and DMARC Verification:

    • SPF (Sender Policy Framework): This protocol helps to specify which mail servers are allowed to send emails on behalf of your domain. mailX verifies your SPF records to prevent spoofing.
    • DKIM (DomainKeys Identified Mail): DKIM adds a digital signature to your emails, confirming the sender's identity. mailX ensures this is properly set up.
    • DMARC (Domain-based Message Authentication, Reporting, and Conformance): DMARC builds on SPF and DKIM, providing instructions to receiving servers on how to handle unauthenticated emails. mailX assesses your DMARC settings for effectiveness.
  3. Blacklist Status Checking: The tool checks if your domain or IP address is listed on major blacklists, which can severely affect email deliverability.

  4. SMTP Server Verification: mailX also tests the connectivity and response of your SMTP servers, allowing you to troubleshoot issues quickly.

Best Practices / Tips

  • Regular Checks: Use mailX regularly to monitor your email configuration, especially after making any changes to your DNS settings.
  • Follow Protocol Standards: Ensure your SPF, DKIM, and DMARC records are set up according to best practices to enhance email security and deliverability.
  • Monitor Blacklist Status: Keep an eye on your domain's blacklist status to maintain a good sender reputation.

Additional Resources

How does mailX work?

mailX operates by leveraging advanced AI technologies to streamline everyday workflows, helping users automate, enhance, and simplify various tasks. It integrates tools for email management, scheduling, and data analysis, making day-to-day operations more efficient and productive.

Key Points

  • AI-Powered Automation: Automates repetitive tasks to save time.
  • Enhanced Productivity: Streamlines workflows through intelligent assistance.
  • User-Friendly Interface: Designed for ease of use, requiring minimal technical skills.

Detailed Explanation

mailX simplifies daily operations by harnessing the power of artificial intelligence. Users benefit from its capabilities in several ways:

  1. Email Management: mailX can intelligently sort, categorize, and respond to emails. By analyzing your communication patterns, it prioritizes important messages, allowing users to focus on what matters most.

  2. Scheduling Assistance: The platform offers smart scheduling tools that integrate with calendars. It can suggest optimal meeting times by analyzing availability, helping to coordinate schedules effortlessly.

  3. Data Analysis: mailX provides insights by processing data relevant to your tasks. Whether it’s summarizing reports or analyzing trends, the AI can distill complex information into actionable insights.

For example, a marketing manager can use mailX to automate email campaigns, schedule meetings with clients based on mutual availability, and analyze audience engagement metrics, all from a single platform.

Best Practices / Tips

  • Utilize AI Features: Take full advantage of AI capabilities for automation to maximize productivity. Regularly update your preferences and settings to ensure the AI learns your patterns effectively.

  • Set Clear Objectives: Determine specific tasks you want to automate with mailX. This clarity will help the AI adapt and perform better.

  • Monitor Performance: Regularly review how mailX impacts your workflow. This can include tracking time saved or tasks completed, allowing you to adjust settings for optimal performance.

Common pitfalls include neglecting to customize the AI's settings or not regularly engaging with the platform, which can lead to less effective automation.

Additional Resources

By leveraging these resources, users can deepen their understanding of mailX's functionalities, ensuring they make the most of this powerful tool.

What are the main features of mailX?

mailX offers several powerful features, including advanced AI-driven email automation, real-time analytics, and customizable templates. These capabilities streamline email marketing campaigns, enhance user engagement, and provide insights that drive decision-making, making mailX a comprehensive solution for businesses looking to optimize their communication strategy.

Key Points

  • AI-Driven Automation: Automates repetitive tasks to save time.
  • Real-Time Analytics: Provides insights into campaign performance.
  • Customizable Templates: Offers a variety of designs for personalized communication.

Detailed Explanation

mailX is designed to revolutionize email marketing through its core features.

  1. AI-Driven Automation: The platform uses machine learning algorithms to automate email scheduling and sending. This means you can set up triggers based on user behavior, such as sending a welcome email after subscription or a follow-up after a purchase.

  2. Real-Time Analytics: With mailX, you can track open rates, click-through rates, and conversion metrics in real-time. This data is crucial for understanding what resonates with your audience, allowing you to make data-driven adjustments to your campaigns quickly. For example, if you notice a high drop-off rate after a certain email, you can modify your strategy accordingly.

  3. Customizable Templates: mailX offers a library of professionally designed email templates that can be easily customized to reflect your brand’s identity. Users can drag and drop elements, making it simple to create visually appealing emails without needing coding skills.

Best Practices / Tips

  • Segment Your Audience: Use mailX's segmentation features to tailor your messages to specific groups, ensuring that content is relevant and engaging.
  • A/B Testing: Regularly test different subject lines and calls to action to determine what works best for your audience. mailX facilitates A/B testing to optimize your email campaigns.
  • Monitor Performance: Regularly review analytics to refine your strategies. Look for trends in open and click rates to continuously improve your campaigns.
  • Stay Compliant: Ensure that your email campaigns comply with regulations such as GDPR or CAN-SPAM to avoid penalties and maintain customer trust.

Additional Resources

Who is mailX for?

mailX is designed for professionals, businesses, and individuals looking to streamline their daily AI workflows. It caters to anyone seeking to enhance productivity through automation, whether in communication, data management, or creative tasks.

Key Points

  • Target Audience: Professionals, freelancers, and businesses.
  • Use Cases: Enhancing email productivity, automating repetitive tasks, and managing projects.
  • Accessibility: Suitable for all skill levels, from beginners to advanced users.

Detailed Explanation

mailX serves a diverse audience by providing tools that simplify various tasks. For professionals, it can automate email responses, schedule meetings, and manage contacts efficiently. Businesses can use mailX to streamline marketing campaigns, track customer interactions, and analyze engagement metrics. Freelancers benefit from its project management features, allowing them to keep track of deadlines and deliverables.

For instance, a marketing team can leverage mailX to create personalized email campaigns that resonate with their audience, using AI to analyze customer data and optimize messaging. Similarly, a freelancer may automate client communications, ensuring timely responses without manual effort. The platform's user-friendly interface makes it accessible for anyone, regardless of technical expertise.

Best Practices / Tips

  • Utilize Templates: Take advantage of mailX's email templates to save time and maintain consistency in communications.
  • Automate Tasks: Set up automated workflows for regular tasks such as email sorting and follow-ups to enhance efficiency.
  • Integrate Tools: Connect mailX with other productivity tools to create a seamless workflow and maximize your output.

Additional Resources

How much does mailX cost?

The cost of mailX varies based on the plan selected and the features included. For accurate pricing details, it is recommended to visit the official mailX website, where you can find the latest pricing structures and available subscription options tailored to your needs.

Key Points

  • Pricing plans are tiered based on features and usage.
  • Special discounts may be available for annual subscriptions.
  • Free trials or demos may be offered for new users.

Detailed Explanation

mailX offers several pricing tiers designed to accommodate different user needs, from individuals to large enterprises. Typically, you can expect to find:

  1. Basic Plan: Ideal for small businesses or individuals, this plan usually includes essential features like email tracking and analytics. Pricing might start at around $10 per month.

  2. Pro Plan: For businesses requiring more advanced capabilities such as automation and integration with other tools, the Pro Plan usually costs between $25 to $50 per month, depending on user count and additional features.

  3. Enterprise Solutions: Custom pricing for larger organizations needing tailored solutions, including enhanced security features, dedicated support, and custom integrations. Interested users should contact mailX directly for a quote.

Additionally, mailX often runs promotions, offering discounts or special rates for annual commitments. New users may also benefit from a free trial, allowing them to explore the platform before committing to a paid plan.

Best Practices / Tips

  • Compare Plans: Evaluate the features of each plan against your business needs. The Basic Plan may suffice for startups, while larger teams may benefit from the Pro or Enterprise options.
  • Utilize Free Trials: Take advantage of any free trials to fully explore the platform and ensure it aligns with your requirements before investing.
  • Look for Discounts: Check for seasonal promotions or discounts for long-term subscriptions to save money.
  • Monitor Usage: Regularly assess your usage to determine if you need to upgrade or downgrade your plan based on evolving business needs.

Additional Resources

How do I get started with mailX?

To get started with mailX, simply visit themailx.com and sign up for a free account. Once registered, you can explore its features, customize your settings, and begin using mailX for efficient email management and automation.

Key Points

  • Easy Sign-Up: Registration is straightforward and quick.
  • User-Friendly Interface: mailX offers an intuitive dashboard for easy navigation.
  • Powerful Features: Unlock advanced email automation and management tools.

Detailed Explanation

To begin using mailX, follow these steps:

  1. Visit the Website: Navigate to themailx.com.
  2. Create an Account: Click on the "Sign Up" button and fill in your details, including your email address and a secure password. You may also have the option to sign up using social media accounts for quicker access.
  3. Verify Your Email: After signing up, check your inbox for a verification email from mailX. Click the link provided to activate your account.
  4. Explore Features: Once logged in, familiarize yourself with the dashboard. mailX offers features like email scheduling, template creation, and analytics to track your email performance.
  5. Customize Settings: Go to the settings menu to personalize your preferences, including notification settings and integrations with other tools you may use.
  6. Start Using mailX: Begin sending emails, automating responses, and utilizing the platform's analytics to optimize your communication strategy.

For example, if you're a small business owner, you can leverage mailX to automate follow-up emails to potential clients, saving you time and ensuring no lead is neglected.

Best Practices / Tips

  • Utilize Templates: Create reusable email templates for common communications to save time.
  • Segment Your Audience: Use mailX’s features to segment your email list for targeted campaigns, improving engagement rates.
  • Monitor Analytics: Regularly check your email performance metrics to refine your strategies and improve results.
  • Avoid Spam Filters: Ensure your emails comply with anti-spam regulations to maintain deliverability.

Additional Resources

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