MXtoolbox vs.
Kevlarr in 2026
MXtoolbox
Kevlarr
vs.
We tested MXtoolbox and Kevlarr for 90 days across a corporate domain, a marketing subdomain, and a parked domain, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and a support desk sender connected. MXtoolbox gave us wider email diagnostics and blacklist (blocklist) context, while Kevlarr was easier for day-to-day DMARC triage, sender classification, and MSP-style handoff.
MXtoolbox
Email diagnostics and DMARC monitoring
Starts at
Free plan available
Best fit
Teams that want DMARC plus DNS, blacklist, and mailflow checks in one utility set.
In one line
MXtoolbox was strongest when we needed to connect DMARC findings with DNS checks, blacklist monitoring, and delivery diagnostics.
Kevlarr
DMARC monitoring for MSPs and SMBs
Starts at
Free plan available
Best fit
MSPs and lean IT teams that want fast DMARC visibility across many customer domains.
In one line
Kevlarr was stronger for sorting noisy DMARC reports into readable sender and customer views.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn about Suped
Pick MXtoolbox for broad diagnostics, Kevlarr for faster DMARC operations
Pick MXtoolbox if
Best for technical teams that already live in DNS and delivery diagnostics
Our Microsoft 365 and Google Workspace checks were easier to verify because MXtoolbox put DMARC, MX, SPF, and blacklist checks close together.
The SendGrid and Mailchimp sources were visible in aggregate reports, but we still had to map several IP ranges back to real business owners.
The parked domain spoof sample stood out clearly when combined with domain impersonation and blacklist monitoring.
Free plan available
Pick Kevlarr if
Best for MSPs and lean teams that need readable DMARC queues
The three test domains were easier to group by customer and operational status during weekly review.
Kevlarr classified the unknown sender faster because the workflow kept attention on sources that needed action.
Forwarded mail with SPF failure was easier to explain to non-specialists because the noise filtering reduced false urgency.
Free plan available
Consider Suped if
Use Suped as the third option when guided fixes, hosted records, and simpler ownership matter
Guided fixes should turn Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk issues into owner-ready next steps instead of only report views.
Automated issue detection and alert quality matter when spoofing, forwarding, and unknown senders hit the same domain during a busy week.
MSP workflows and published starter pricing help buyers avoid unclear volume limits and custom-only planning.
Free plan available
The differences that actually change your week
MXtoolbox
Kevlarr
Suped
DMARC report analysis
Turns aggregate reports into domain and sender views.
Supported on paid Delivery Center plans.
Supported, with cleaner operational triage.
Supported
Source detection
Identifies sending services behind DMARC traffic.
Partial, more manual owner mapping.
Supported, faster classification in testing.
Supported
Forward detection
Separates forwarded SPF failures from real authentication problems.
Supported, needed manual explanation.
Supported, easier to filter.
Supported
Spoof detection
Flags unauthorized use of a protected domain.
Supported with impersonation context.
Supported in DMARC workflow.
Supported
Notifications and alerts
Routes actionable changes to the right operator.
Supported, broader monitoring alerts.
Supported, cleaner DMARC noise control.
Supported
Reporting
Exports or shares results with stakeholders.
Supported, technical reports.
Supported, client-ready PDF reports.
Supported
API
Allows programmatic access for automation.
Supported, limits unclear.
Supported, API-first partner messaging.
Supported
Multi-tenancy
Separates clients, teams, or business units.
Partial, not the strongest workflow.
Supported for MSP partners.
Supported
SPF flattening
Helps manage SPF lookup limits.
Paid tier, Delivery Center Plus.
Not publicly listed; SPF lookup support only.
Supported
Hosted DMARC
Provides managed DMARC record handling.
Not listed as hosted DMARC.
Not publicly listed.
Supported
Hosted SPF
Provides hosted SPF or managed SPF records.
Not publicly listed; SPF flattening only.
Not publicly listed.
Supported
Hosted MTA-STS
Hosts or manages MTA-STS policy records.
Not publicly listed.
Not publicly listed.
Supported
Blocklists and reputation
Monitors blacklist and blocklist status.
Supported and mature.
Not tested as a blacklist tool.
Supported
Automatic issue detection
Highlights problems without manual report reading.
Partial, more manual triage.
Supported with AI filtering.
Supported
AI copilot
Uses AI assistance inside the DMARC workflow.
Not publicly listed.
AI filtering only.
Supported
DNS monitoring
Watches DNS and mail records for changes.
Supported across DNS tools.
Supported for SPF, DKIM, and DMARC monitoring.
Supported
Self hostable
Can be deployed on the buyer's own infrastructure.
No.
No.
No
Free trial/free tier
Has a free starting path.
Free tier for basic monitoring.
Free DMARC monitoring available.
Supported
Ten dimensions, scored from 0 to 10
Each product was scored against a fixed editorial rubric covering enforcement movement, source resolution, support, MSP workflows, alerts, hosted records, reputation monitoring, pricing clarity, and time to enforcement. Higher is better in every row.
MXtoolbox scored higher on diagnostics and reputation, while Kevlarr scored higher on DMARC operations.
MXtoolbox benefited from its DNS, mailflow, and blacklist monitoring scope, especially when we investigated the parked-domain spoof sample and checked whether any sending IPs had reputation issues. Kevlarr scored higher where the daily work was sorting DMARC sources, explaining forwarded mail, grouping domains, and preparing handoff notes for customers. Pricing clarity hurt Kevlarr because DMARC-specific paid limits were not public, while MXtoolbox published core self-serve tiers but left add-on domains and managed service pricing unclear.
MXtoolbox score
67/100
Kevlarr score
62/100
MXtoolbox
67/100
DMARC enforcement
7.0
Customer support
7.0
Source resolution
6.5
Setup and onboarding
7.5
MSP workflows
5.5
Alerting and integrations
6.5
Hosted SPF and MTA-STS
4.0
Blocklist monitoring
9.0
Pricing transparency
7.0
Time to enforcement
7.0
Kevlarr
62/100
DMARC enforcement
8.0
Customer support
8.5
Source resolution
8.5
Setup and onboarding
8.5
MSP workflows
9.0
Alerting and integrations
7.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
4.0
Time to enforcement
8.0
Feature set
Breadth vs workflow
MXtoolbox has broader diagnostics. Kevlarr has the sharper DMARC workflow.
MXtoolbox gave us more surrounding evidence when a sender failed authentication or hit a blacklist (blocklist), while Kevlarr made it faster to decide which DMARC sources needed work. For buyers, the missing middle is guided fixes and automated issue detection that turn a Microsoft 365, SendGrid, or Mailchimp finding into a clear owner task.
MXtoolbox
Broad DNS diagnostics
Blacklist monitoring depth
Microsoft 365 checks
Kevlarr
Unknown sender triage
Mailchimp source clarity
Forwarding noise filtering
MXtoolbox covered more than DMARC, which mattered when Microsoft 365 and Google Workspace passed with matching visible domains but the support desk sender needed DNS review. We used the DNS, SPF, DKIM, blacklist, mailflow, and DMARC views together to validate SendGrid and Mailchimp, then checked whether the unknown sender had reputation signals. The tradeoff was source resolution: the tool exposed useful evidence, but we still had to connect several sending IPs to business owners before deciding whether to approve, fix, or block them.
Kevlarr was more focused on the DMARC workflow itself. During the unknown sender case, it kept the questionable source near the top of the review queue instead of making us move between separate diagnostic pages. It handled the DKIM pass on a subdomain cleanly and made the forwarded mail SPF failure feel less alarming because the interface separated noisy failure patterns from sources that needed action.
User experience
Control vs guidance
MXtoolbox rewards technical operators. Kevlarr reduces review friction.
MXtoolbox felt familiar when we needed to inspect DNS records, check a mail route, or verify a blacklist status. Kevlarr felt better for recurring DMARC review because the unknown sender, forwarded SPF failure, and domain grouping work took fewer clicks to explain.
MXtoolbox
Fast DNS lookup path
Manual sender investigation
Technical operator fit
Kevlarr
Clear domain grouping
Fast unknown review
Forwarding easier to explain
Onboarding the three test domains in MXtoolbox was straightforward, but the experience assumed we already knew which record, report, or diagnostic page to open next. The corporate domain and marketing subdomain were easy to validate once data arrived, while the parked domain spoof sample required extra navigation between DMARC and reputation views. When we had to explain the forwarded mail SPF failure, the evidence was there, but the explanation needed a technical operator to assemble it.
Kevlarr was faster during repeated weekly reviews. The three domains were easy to separate, and the unknown sender did not get lost behind high-volume Microsoft 365 and Google Workspace traffic. The forwarded mail SPF failure was easier to brief because Kevlarr's filtering kept it separate from DKIM passes with matching domains and real spoofing signals.
Support
Structured tiers vs partner help
MXtoolbox has clearer self-serve tiers. Kevlarr felt more hands-on for DMARC setup.
MXtoolbox published the main Delivery Center tiers and made dedicated expert support visible on the higher plan. Kevlarr's support expectations were less transparent in pricing terms, but the setup experience felt more oriented around guided DMARC work and partner handoff.
MXtoolbox
Public paid tiers
Dedicated support on Plus
Enterprise path unclear
Kevlarr
Helpful DMARC setup
Partner support emphasis
Pricing needs confirmation
MXtoolbox gave us enough setup direction to add the corporate domain, marketing subdomain, and parked domain without a sales-led process. DNS handoff was workable for technical admins because the platform was strong at showing records and diagnostics, but enterprise onboarding details were tied to managed services rather than a fully public package. Escalation felt clearest if the buyer already knew which tier and support level they needed.
Kevlarr's setup flow felt closer to how an MSP or outsourced IT team would explain DMARC to a customer. The record generation respected existing DMARC state, and the support path was useful when deciding how to handle SendGrid, Mailchimp, and the support desk sender. The main gap was commercial clarity: advanced monitoring, managed DMARC, and partner plan pricing needed contact-led confirmation.
Suitability
Enterprise utility vs operator fit
MXtoolbox fits diagnostic-heavy teams. Kevlarr fits MSP and SMB DMARC operations.
MXtoolbox made the most sense when the buyer wanted DMARC as part of a broader email health workflow. Kevlarr fit better when account separation, domain grouping, recurring reports, and customer handoff mattered every week. Buyers comparing both should treat MSP workflows and alert quality as core requirements, not afterthoughts.
MXtoolbox
Enterprise diagnostics fit
Internal reporting works
MSP handoff more manual
Kevlarr
MSP domain grouping
Client reports fit
Partner workflow emphasis
MXtoolbox suited enterprise and technical teams that wanted one place to check DNS, DMARC, mailflow, blacklist status, and domain impersonation signals. Account separation and client handoff were less natural in our test because the workflow centered on tools and monitors rather than customer workspaces. Recurring reporting worked for internal operations, but MSP-facing notes took more manual preparation.
Kevlarr suited MSPs, ICT partners, and SMB teams that needed to move across many domains without rebuilding the explanation each time. Customer and domain grouping made the primary corporate domain, marketing subdomain, and parked domain easier to discuss separately. The client-ready reporting and partner dashboard direction reduced handoff work, though buyers still need to confirm paid limits, SSO, PSA sync, and white label terms.
What each tool feels like after 90 days of real use
MXtoolbox
A broad diagnostic console for teams that know email infrastructure
After 90 days, MXtoolbox felt like a tool we would keep open during a real email incident. When the parked domain received the unauthorized spoof sample, we inspected DMARC results, checked domain impersonation context, and ran blacklist or blocklist checks without leaving the product family.
The daily DMARC work took more manual interpretation. Microsoft 365 and Google Workspace were easy to validate, but SendGrid, Mailchimp, and the support desk sender required owner mapping outside the raw report views. The product rewarded technical confidence more than it guided a non-specialist through the next fix.
Where it wins
Strong DNS and mail diagnostics
Useful blacklist and blocklist monitoring
Clear self-serve paid tiers
Good fit for technical admins
Where it lags
Sender ownership mapping was manual
MSP handoff needed extra notes
Higher tiers jump quickly
Managed pricing was not public
Pricing
From $129 / month
Free tier
Yes
Onboarding
Technical but clear
G2 rating
4.1 / 5
Kevlarr
A focused DMARC operations tool for MSPs and lean IT teams
Kevlarr felt lighter during weekly review. The primary domain, marketing subdomain, and parked domain stayed easier to separate, and the product kept the unknown sender visible without forcing us to sift through every domain-matched Microsoft 365 and Google Workspace report.
The tool was less convincing as a broad delivery diagnostics console. When we wanted blacklist status, deeper DNS monitoring, or a public price for advanced DMARC and MSP partner use, the answer was less direct. For DMARC-focused operations, though, the flow was faster than MXtoolbox in our test.
Where it wins
Fast sender classification
Good customer domain grouping
Readable client reporting
Helpful forwarding noise control
Where it lags
Paid DMARC limits were unclear
No tested blacklist monitoring
Hosted MTA-STS not public
Some integrations need confirmation
Pricing
Free plan available
Free tier
Yes
Onboarding
Fast and guided
G2 rating
4.8 / 5
Pricing
MXtoolbox
Kevlarr
Suped
Small
1 domain, up to 1k emails / month.
$0
Free monitoring covers basic weekly blacklist checks for one domain or IP, not full DMARC reporting.
$0
Free DMARC monitoring is public, but domain, volume, retention, and alert limits are not published.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
$129 / month
Delivery Center includes up to 5 domains and 500,000 messages, so this segment fits inside the public plan.
Not publicly listed as of May 15, 2026
Public pages do not map paid DMARC monitoring to domain or message-volume limits.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
$399 / month
Delivery Center Plus includes 5 domains and 5,000,000 messages; 10 domains require unpublished add-on pricing.
Not publicly listed as of May 15, 2026
Advanced monitoring and managed DMARC pricing are not public for this domain and volume profile.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
Not publicly listed as of May 15, 2026
Managed Email Delivery Services has no fixed public annual price, domain limit, or volume table.
Not publicly listed as of May 15, 2026
MSP and full-service managed DMARC pricing need contact-led confirmation.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
MXtoolbox Free, Delivery Center, and Delivery Center Plus are public list prices checked as of May 15, 2026. MXtoolbox large-domain fit is estimated because add-on domain pricing was not published. Kevlarr Free DMARC monitoring is public, while paid DMARC, managed DMARC, partner plan, domain, email-volume, and retention limits were not publicly listed as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Turn findings into fixes
MXtoolbox gave us useful evidence, but the SendGrid, Mailchimp, and support desk ownership steps still needed manual notes. Suped's product workflow is built to translate those findings into guided remediation tasks.
Reduce noisy DMARC review
Kevlarr handled DMARC triage well, but buyers still need clear alert routing when forwarding noise, spoofing, and unknown senders arrive together. Suped's product focuses on issue detection and alert quality so teams act on the right event first.
Plan MSP rollout earlier
MXtoolbox required extra handoff work for client notes, while Kevlarr's paid MSP terms needed confirmation. Suped's product combines MSP workflows with published starter pricing, so customer rollout planning starts before procurement.
The difference was significant. We moved from limited visibility to a much clearer dashboard. Being able to see specific services like Stripe, rather than generic providers like Amazon SES, helps us resolve email authentication issues faster.
Markus Hugenschmidt, Managing Director, Jam Cyber
Migrating from MXtoolbox or Kevlarr?
We have done the migration enough times to know the shape.
Get started
Step 01
Add domains
Connect the domains you send from and see what is already passing, failing, or missing.
Step 02
Run in parallel
Keep the old setup live while Suped checks alignment, hosts records, and shows what still needs work.
Step 03
Cancel old
Move the remaining work into Suped, keep monitoring in one place, and remove the tools you no longer need.
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