AlternativeTo Logo

Free MxToolBox Alternatives

The best free alternative to MxToolBox is intoDNS. If that doesn't suit you, our users have ranked more than 25 alternatives to MxToolBox and 19 is free so hopefully you can find a suitable replacement. Other interesting free alternatives to MxToolBox are isUp, HetrixTools, SPFToolbox and DNSchecker.

MxToolBox alternatives are mainly Uptime Monitor Services but may also be Website Monitors or Network Monitors. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of MxToolBox.
This page was last updated
MxToolBox iconMxToolBox
  11
  • FreemiumProprietary
  • Online

All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or...

Learn more about MxToolBox

  1. intoDNS icon

    intoDNS

    • FreeProprietary
    • Online

    intoDNS checks the health and configuration of DNS and mail servers.

    main screen
    intoDNS vs MxToolBox opinions
    pros, cons and recent comments

    Free, and willing to show you the details without a subscription (rip free days of MXTB)

    Positive comment ago
    Copy a direct link to this comment to your clipboard   
    If this Comment contains spam or other abuse, notify admins about it.

    0
  2. Website/Server monitoring with fast notification via Web, SLACK or E-Mail on issues. What you get: 25 monitors, checked every 15 minutes. Now includes SSL-Certificate validation and port checks. Totally free!.

    Screenshot


  3. HetrixTools icon

    Free: Uptime Monitoring, Server Resource Monitoring, Blacklist Monitoring.

    (dark mode) Uptime Monitors Dashboard
    HetrixTools vs MxToolBox opinions
    pros, cons and recent comments

    Others only have 1 free monitor. Hetrix has 32 free monitors.

    Positive comment ago
    Copy a direct link to this comment to your clipboard   
    If this Comment contains spam or other abuse, notify admins about it.

    0
  4. SPFToolbox icon

    SPFToolbox

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Online
    • Chrome OS
    • Self-Hosted

    SPFtoolbox is an open-source Javascript and PHP app to look up DNS records such as SPF, MX, Whois, and more

    Screenshot
  5. DNSchecker icon

    DNSchecker

    • FreeProprietary
    • Online
    • Software as a Service (SaaS)

    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.

    Screenshot


  6. Pingbreak is an original and free monitoring service. Get notified through Twitter if your website is down.

    Standard view
  7. Port25 Email Verification icon

    Port25 Email Verification

    • FreemiumProprietary
    • Online

    Discover the rich features in PowerMTA that help you adopt and adapt to changing email authentication standards including support for DKIM and SPF and setup for DMARC via an automated testing tool.

    Screenshot
  8. SMTP Diag Tool icon

    SMTP Diag Tool

    • FreeProprietary
    • Windows

    SMTP Diag Tool is used to identify and troubleshoot SMTP server problems by trying to send a message to an SMTP server while displaying all diagnostic information in realtime in a log window.

    Screenshot
  9. RBLTracker icon

    RBLTracker

    • FreemiumProprietary
    • Online

    RBLTracker is a fully automated monitoring service, which checks your IP addresses and website domains against the most frequently used real-time black lists, safe browsing databases, and social media threat exchanges.

    Screenshot
Showing 10 of 19 alternatives