Software Alternatives, Accelerators & Startups

MxToolBox VS Emisar.dev

Compare MxToolBox VS Emisar.dev and see what are their differences

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MxToolBox logo MxToolBox

All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool.

Emisar.dev logo Emisar.dev

One governed MCP server connects any AI agent to a finite action catalog, enforced on-host with pack trust, policy gates, human approvals, and a hash-chained audit trail.
  • MxToolBox Landing page
    Landing page //
    2021-09-11
  • Emisar.dev Approvals
    Approvals //
    2026-07-21
  • Emisar.dev Audit Log
    Audit Log //
    2026-07-21
  • Emisar.dev Policies
    Policies //
    2026-07-21
  • Emisar.dev Runner fleet
    Runner fleet //
    2026-07-21

Emisar is the last MCP server youโ€™ll need to install: a Zero-Trust gateway connecting Claude, Cursor, ChatGPT, and any AI agent to your infrastructure. One server handles production access, debugging, alerts, and internal operations, with new capabilities added as packs. Agents can inspect real production state, debug what they shipped, and help resolve incidents. Safe reads run automatically; policy allows, blocks, or routes risky actions for approval. No SSH keys, VPNs, remote shells, or standing shell access โ€” and every call is recorded.

Emisar.dev

Website
emisar.dev
$ Details
freemium $20.0 / Monthly (per runner)
Startup details
Country
United States
State
CA
Founder(s)
Andrew Dryga
Employees
1 - 9

MxToolBox features and specs

  • Ease of Use
    MxToolBox offers a user-friendly interface that makes it simple for users of all technical levels to conduct a variety of diagnostic tests.
  • Comprehensive Tools
    It provides a wide range of tools such as DNS lookup, email health check, blacklist check, and more, making it a one-stop solution for IT professionals.
  • Speed
    The platform delivers fast results, allowing users to quickly diagnose and address issues without lengthy wait times.
  • Free Tier
    MxToolBox offers a robust free tier of services that can handle basic diagnostics and checks, making it accessible for smaller businesses or individual users.
  • Detailed Reports
    The tool provides detailed reports that can be exported, which are beneficial for record-keeping and further analysis.

Possible disadvantages of MxToolBox

  • Premium Costs
    Advanced features and extended monitoring options require a paid subscription, which can be expensive for small businesses or independent users.
  • Limited Customization
    The platform offers limited customization options for users to tailor reports and dashboards according to their specific needs.
  • Advertisement
    Free tier users may experience ads, which can be distracting and negatively impact the user experience.
  • Occasional Downtime
    Some users have reported occasional downtime or issues with service reliability, which can be problematic during critical troubleshooting.
  • Learning Curve
    Despite its user-friendly interface, some of the more advanced features may require a learning curve for users who are not well-versed in IT diagnostics.

Emisar.dev features and specs

No features have been listed yet.

Analysis of MxToolBox

Overall verdict

  • Yes, MxToolBox is considered a good and valuable resource for network diagnostics and email troubleshooting. Its robust set of tools and user-friendly interface make it an excellent choice for both technical experts and those with less networking experience.

Why this product is good

  • MxToolBox is widely used and trusted by IT professionals for its comprehensive suite of online tools that assist with network diagnostics and troubleshooting. It offers services such as DNS lookup, blacklisting checks, SMTP diagnostics, and email server testing, which are essential in identifying and resolving network issues efficiently. The platform provides reliable information and results that aid in maintaining optimal network performance and email deliverability.

Recommended for

    MxToolBox is highly recommended for IT professionals, network administrators, email server administrators, and anyone responsible for maintaining the health and security of network systems. It is also beneficial for businesses of all sizes that rely on email communication and need to ensure their servers and domains are functioning correctly and not blacklisted.

MxToolBox videos

Episode 201 - Tools, Tips and Tricks - MXToolbox.com

Emisar.dev videos

No Emisar.dev videos yet. You could help us improve this page by suggesting one.

Add video

Category Popularity

0-100% (relative to MxToolBox and Emisar.dev)
Diagnostics Software
100 100%
0% 0
AI Tools
0 0%
100% 100
Website Monitoring
100 100%
0% 0
Infrastructure Monitoring

Questions & Answers

As answered by people managing MxToolBox and Emisar.dev.

How would you describe the primary audience of your product?

Emisar.dev's answer:

emisar is for SRE, DevOps, platform engineering, infrastructure, and security teams that want AI agents to inspect and operate production systems. It is especially relevant to teams managing multiple Linux hosts, clusters, databases, cloud services, or regulated environments where unrestricted shell access and incomplete audit records are unacceptable.

Which are the primary technologies used for building your product?

Emisar.dev's answer:

The hosted control plane and operator interface use Elixir, Phoenix, LiveView, PostgreSQL, and Tailwind CSS. The host runner and MCP bridge are written in Go. Action packs use YAML and JSON Schema, while production infrastructure is managed with Terraform on Google Cloud. The system communicates through MCP, OAuth 2.1, TLS, and WebSockets.

Who are some of the biggest customers of your product?

Emisar.dev's answer:

  • Blitz.gg - game analytics for billions of matches and a pretty large infrastructure.

What's the story behind your product?

Emisar.dev's answer:

Founder Andrii Dryga spent a decade working as a CTO, full-stack engineer, SRE, and DevOps engineer. He experienced the cost of running the wrong command on the wrong cluster, while also seeing AI solve operational problems in seconds. emisar grew from the need to preserve both truths: AI agents are useful, and production access must remain bounded. Its answer is to give agents a reviewed catalog of operations instead of a blank terminal.

What makes your product unique?

Emisar.dev's answer:

emisar lets AI agents work on real infrastructure without giving them a shell. Agents choose from a finite catalog of typed, versioned actions. Policy decides what runs, what requires approval, and what is denied, while an outbound-only runner verifies the action again on the host. New capabilities arrive as packs behind the same MCP integration, and every request is recorded in both a searchable audit trail and a tamper-evident host journal. [

Why should a person choose your product over its competitors?

Emisar.dev's answer:

Choose emisar when you want an agent to keep investigating and handling routine operations without handing it SSH credentials or supervising every call. Compared with raw shell access, copy-paste workflows, or one-off MCP servers, emisar provides reviewed action contracts, host-level enforcement, risk-based policy, scoped access, approvals, pack integrity checks, and a durable audit trail. It is built specifically for governed infrastructure access rather than generic automation.

User comments

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Social recommendations and mentions

Based on our record, MxToolBox seems to be more popular. It has been mentiond 200 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

MxToolBox mentions (200)

  • Ask HN: Replacement for Rackspace SMTP Hosting?
    Made the switch to self-hosted https://mailu.io (on k8s) 2 years ago when Gandi announced the deprecation of their free plan. Happy after IP was off most blocklists, but setup was kinda rough - https://mxtoolbox.com is your friend. - Source: Hacker News / over 1 year ago
  • DKIM, SPF, SpamAssassin Email Validator
    I used these tools in the past: https://mxtoolbox.com/ https://www.mail-tester.com/. - Source: Hacker News / about 2 years ago
  • The funny rules of SpamAssassin in 2023
    Suprised to not see https://mxtoolbox.com in this list too. - Source: Hacker News / over 2 years ago
  • Reason: SMTP transmission failure has occurred Diagnostic code: smtp;550-5.7.26
    MX Toolbox - https://mxtoolbox.com/ - may be a place to start digging. Source: over 2 years ago
  • How to set up emails: Hetzner webhosting + Namecheap domain bought
    You can try https://mxtoolbox.com/. Source: over 2 years ago
View more

Emisar.dev mentions (0)

We have not tracked any mentions of Emisar.dev yet. Tracking of Emisar.dev recommendations started around Jul 2026.

What are some alternatives?

When comparing MxToolBox and Emisar.dev, you can also consider the following products

Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.

UptimeRobot - Free Website Uptime Monitoring

DNSChecker.org - Check DNS Propagation worldwide. DNS Checker provides name server propagation check instantly. Changed nameservers so do a DNS lookup and check if DNS and nameservers have propagated.

HetrixTools - FREE Uptime Monitoring + Server Monitoring + Status Page + Blacklist Monitoring!

Whats My DNS - Instantly check your domain names current IP address and DNS record information against multiple name servers located in different parts of the world.

Uptime Kuma - A fancy self-hosted monitoring tool.