Email Deliverability Suite vs MxToolbox

Email Deliverability Suite vs MxToolbox

MxToolbox is the Swiss Army knife of email diagnostics. It's been around forever, offers tons of free tools, and is many people's first stop for DNS and email troubleshooting.

So why would you use anything else?

MxToolbox is excellent for diagnostics. But diagnostics and monitoring are different disciplines.

What MxToolbox Offers

MxToolbox provides an impressive array of free tools:

• MX record lookup
• SPF record check
• DKIM lookup
• DMARC lookup
• Blacklist check (across 100+ lists)
• DNS health reports
• SMTP diagnostics
• And dozens more

For one-time lookups and troubleshooting, MxToolbox is hard to beat. It's comprehensive, free for basic use, and trusted by the industry.

The MxToolbox Monitoring Option

MxToolbox does offer paid monitoring through MxToolbox Monitor. It's a capable product with features including:

• Scheduled monitoring
• Alert notifications
• Historical data
• Multiple check types

It's priced based on the number of monitors you need, starting around $100/month for basic plans.

The Comparison

Different Tools, Different Focus

MxToolbox: The Generalist

MxToolbox covers everything network and email related:

• DNS diagnostics
• Network troubleshooting
• Server monitoring
• Website health
• And much more

This breadth is both a strength and a limitation. It's great if you need a single tool for everything. It can be overwhelming if you just want email deliverability monitoring.

Email Deliverability Suite: The Specialist

We focus exclusively on email deliverability:

• SPF record monitoring
• DKIM verification
• DMARC policy checks
• MX record validation
• Blacklist monitoring

Nothing else. This focus means a simpler interface, straightforward setup, and pricing that makes sense for the specific problem.

Pricing Philosophy

MxToolbox Monitor prices by the monitor. Each check you want to run counts against your quota. More domains × more check types = higher cost.

Email Deliverability Suite is flat-rate: $39/month for unlimited domains, all email deliverability checks included.

Example Scenarios

5 domains, all email checks:

• MxToolbox: 5 domains × 5 check types = 25 monitors → pricing tier varies
• Email Deliverability Suite: $39/month

20 domains, all email checks:

• MxToolbox: 100 monitors → higher pricing tier
• Email Deliverability Suite: $39/month

50 client domains:

• MxToolbox: 250 monitors → enterprise pricing
• Email Deliverability Suite: $39/month

When to Use MxToolbox

MxToolbox remains valuable for:

• One-time diagnostics: Quick lookups when troubleshooting
• Deep DNS analysis: More detailed than our focused tools
• Network issues: When email problems stem from network config
• SMTP testing: Direct mail server diagnostics
• Learning: Great educational resource for understanding email infrastructure

We recommend keeping MxToolbox bookmarked for ad-hoc troubleshooting regardless of what you use for monitoring.

When to Use Email Deliverability Suite

Choose dedicated monitoring when:

• You want continuous email deliverability checks without the complexity
• You manage multiple domains and want predictable pricing
• You don't need network monitoring, server checks, or DNS beyond email
• You want simple setup and alerts without configuring individual monitors

Using Both

Many teams use both:

1. Email Deliverability Suite for daily automated monitoring of all domains
2. MxToolbox for deep-dive troubleshooting when issues arise

The monitoring catches problems. MxToolbox helps diagnose root causes.

The Interface Question

MxToolbox has evolved over 15+ years. It's feature-rich but can feel cluttered. Finding the exact tool you need sometimes takes clicking through menus.

Email Deliverability Suite is intentionally minimal. Add domains, configure DKIM selectors, get alerts. There's less to learn because there's less surface area.

Neither approach is wrong—it depends on what you value.

Free Diagnostic Tools

For one-time checks, use our free individual tools:

• SPF Record Check
• DKIM Test
• DMARC Record Checker
• MX Record Checker
• Email Blacklist Checker

These complement MxToolbox's free tools. Use whatever works for your workflow.

Bottom Line

MxToolbox is an excellent product that does many things well. If you need comprehensive network and email diagnostics with monitoring, it's a solid choice.

Email Deliverability Suite does one thing: monitors your email authentication and blacklist status. If that's all you need, it's simpler and likely cheaper—especially at scale.

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