MxToolBox Alternatives
Sites and apps similar to MxToolBox include Domain Digger, which is free and open source. Other options are Pingdom, HetrixTools, MailAegis and Klaxel. You're spoiled for choice with Uptime Monitor Services like MxToolBox: we list more than 50 alternatives for Windows, Linux, self-hosting, Chrome OS and Mac.
Alternatives list
Monitors email deliverability and domain health: SPF, DKIM, DMARC and blocklist status, plus uptime, SSL, domain/certificate expiry and page-change detection.
Cost / License
- Freemium
- Proprietary
Platforms
- Online



Cost / License
- Paid
- Proprietary
Application type
Platforms
- Online
- Software as a Service (SaaS)

MailScore helps marketing managers, SaaS founders, and agency owners make sure their emails actually reach inboxes. Google and Yahoo now require SPF, DKIM, and DMARC authentication for bulk senders. MailScore checks all of these plus MX records and IP blacklists in under 10...
Cost / License
- Freemium
- Proprietary
Platforms
- Online

- 156 Hexadecimal alternatives
- Uptime monitoring - checks are performed approximately once every minute from one of the available locations worldwide. During downtimes, checks are performed from four different locations simultaneously. Downtime is only recorded if more than half of servers can confirm it.
Cost / License
- Paid
- Proprietary
Application typeApplication types
Platforms
- Online
- Software as a Service (SaaS)


+3
- 145 Web Utils alternatives
Web monitoring service, which checks website every 5 minutes. It detects when it's offline, redirected, broken or even hacked. Provides SMS and email notifications, statistics and logs.
Cost / License
- Paid
- Proprietary
Application typeApplication types
Platforms
- Software as a Service (SaaS)



Daily email deliverability, uptime and SSL monitoring for founders and agencies, with free SPF, DKIM and DMARC tools.
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Online


- 165 Status List alternatives
Standard uptime monitoring with alerts that include diagnostic information, timing breakdowns and dashboard snapshots. Configure alerts for HTTP statuses, reachability and performance thresholds.
Cost / License
- Paid
- Proprietary
Application typeApplication types
Platforms
- Software as a Service (SaaS)



Nightlamp provides real-time monitoring and real-engineer diagnostics for no-code platforms like Bubble, Lovable, Webflow, and more. Unlike standard uptime monitors, Nightlamp goes beyond status checks by paging a human engineer to reproduce the issue, identify the root cause...
Cost / License
- Paid
- Proprietary
Platforms
- Software as a Service (SaaS)
- Online
United States

Valla DNS is a free, no-signup, all-in-one domain and network intelligence toolkit for developers, sysadmins, and IT professionals. It brings the checks you normally spread across a dozen sites into one fast, dark-mode-friendly interface, with no login and no paywall.
Cost / License
- Free
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)
United States


- 51 PingZen alternatives
Free uptime monitoring for websites, servers and APIs. Supports HTTP, TCP, UDP and ICMP. Instant alerts to Telegram, Discord, Slack.
Cost / License
- Free
- Proprietary
Application typeApplication types
Platforms
- Online
- Software as a Service (SaaS)
Belarus



DomainPreflight checks everything that can silently break your email deliverability before you send a single message. Unlike MXToolbox which tells you what's wrong, DomainPreflight tells you exactly how to fix it — with copy-paste DNS records formatted for Cloudflare or...
Cost / License
- Free
- Open Source (MIT)
Platforms
- Online
United States
























