Mail Tower vs.
Kevlarr in 2026
Mail Tower
0.0/5
Kevlarr
4.8/5
vs.
We tested Mail Tower and Kevlarr for 90 days across a corporate domain, a marketing subdomain, and a parked domain, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and one support desk sender connected. Mail Tower was clearer on public pricing and basic DMARC reporting, while Kevlarr was faster for sender triage, MSP-style account work, and noisy authentication cases.
Rhea Robinson
Senior Solutions Engineer
Published 4 Nov 2025
Updated 31 May 2026
8 min read
Summarize with
Mail Tower
Publicly priced DMARC reporting
Starts at
From €10 / month
Best fit
Small internal teams that already know their senders
In one line
Mail Tower is a low-cost DMARC reporting tool that worked best when Microsoft 365, Google Workspace, SendGrid, and Mailchimp ownership was already known.
Kevlarr
DMARC monitoring for MSPs and operators
Starts at
Free monitoring available
Best fit
MSPs and technical operators managing many domains
In one line
Kevlarr gave stronger source triage for MSP-style work; buyers needing published starter pricing and guided ownership should benchmark Suped's product too.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn more
Pick Mail Tower for price clarity, Kevlarr for operator workflow
Pick Mail Tower if
Best for small internal teams that want low-cost DMARC reporting
Public tiers made budget approval easier than Kevlarr's contact-led paid plans.
The three test domains were live after copying straightforward RUA records.
Microsoft 365 and Google Workspace traffic was readable without much setup help.
From €10 / month
Pick Kevlarr if
Best for MSPs and hands-on operators managing many domains
The unknown support desk sender surfaced faster in Kevlarr's review flow.
Forwarded mail with SPF failure was easier to separate from real abuse.
Client grouping, PDF reports, and partner workflows fit recurring handoff work.
Free plan available
Consider Suped if
Suped's product is the third option for guided fixes, hosted records, and simpler ownership
Guided fixes matter when a spoof sample and unknown sender both need owner notes.
Automated issue detection cuts review time when approved and unknown senders report together.
Published starter pricing and MSP workflows help when client handoff cannot wait for custom quotes.
Free plan available
The differences that actually change your week
Mail Tower
Kevlarr
Suped
DMARC report analysis
Aggregate report parsing and drilldown quality.
Clear per-domain reports
Noise-filtered monitoring
Full analysis
Source detection
How quickly raw XML becomes named sending services.
Manual naming often needed
Clearer sender names
Source identification
Forward detection
Ability to separate forwarding breakage from sender misconfiguration.
Manual interpretation
Forward noise filtered
Forward classification
Spoof detection
Detection of unauthorized use of the visible From domain.
Visible in failures
Surfaced as high priority
Spoof detection
Notifications and alerts
Operational alerts, routing, and noise control.
Email alerts, limited routing
Smart alert filtering
Alert rules
Reporting
Recurring exports and readable stakeholder reports.
Exports and domain reports
PDF reports for clients
Reporting
API
Programmatic access for automation and partner workflows.
Large tier only
API-first partner option
API available
Multi-tenancy
Client separation, account grouping, and delegated access.
Custom MSP plan
Partner dashboard
MSP workspaces
SPF flattening
Hosted or managed SPF flattening to avoid DNS lookup limits.
Not supported
SPF lookup support only
Supported
Hosted DMARC
Managed DMARC record hosting and policy updates.
Reporting only
Generated policy only
Supported
Hosted SPF
Managed SPF record hosting.
Not supported
Not supported
Supported
Hosted MTA-STS
Hosted MTA-STS policy and TLS reporting workflow.
Not supported
Not supported
Supported
Blocklists and reputation
Coverage for blocklist (blacklist) and reputation signals.
Not supported
Not tested in product
Supported
Automatic issue detection
Automatic surfacing of authentication problems that need action.
Manual workflow
AI filtering and errors
Supported
AI copilot
Interactive AI assistance for explaining and resolving findings.
Not supported
AI filtering, no copilot
Supported
DNS monitoring
Monitoring for DMARC, SPF, DKIM, and related DNS changes.
DMARC DNS checks
Configuration error reporting
Supported
Self hostable
Ability to run the product on your own infrastructure.
Not supported
Not supported
Not supported
Free trial/free tier
No-cost entry path for initial monitoring.
No public free tier
$0 monitoring tier
Free tier
Ten dimensions, scored from 0 to 10
We scored both products against a fixed editorial rubric after the same 90-day setup, sender mix, authentication cases, exports, alerts, and support checks. Higher is better in every row.
Kevlarr scored higher on operator workflow, while Mail Tower scored higher on pricing clarity
Mail Tower got credit for clear public tiers, simple DNS setup, and readable DMARC report views, but it lost ground when the unknown sender and forwarded SPF failure required manual interpretation. Kevlarr scored higher on source resolution, MSP workflows, and alert filtering because it separated the spoof sample and forwarding noise faster. Neither product showed hosted SPF, hosted MTA-STS, or blocklist (blacklist) monitoring in the tested workflow, so those rows are scored at 0.0.
Mail Tower score
49.5/100
Kevlarr score
59.5/100
Mail Tower
49.5/100
DMARC enforcement
6.5
Customer support
5.5
Source resolution
6.0
Setup and onboarding
7.0
MSP workflows
5.0
Alerting and integrations
4.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
8.5
Time to enforcement
6.5
Kevlarr
59.5/100
DMARC enforcement
7.5
Customer support
8.0
Source resolution
8.0
Setup and onboarding
8.5
MSP workflows
8.5
Alerting and integrations
7.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
3.5
Time to enforcement
8.0
Feature set
Reporting depth vs operator breadth
Mail Tower covers the basics cleanly. Kevlarr goes further on triage.
Mail Tower was strong enough for a team that wants DMARC aggregate reporting and public pricing. Kevlarr handled more of the messy day-to-day work, especially sender classification and filtering around forwarding. A practical buying criterion is whether the platform pairs source identification with guided fixes and automated issue detection, which is how Suped's product approaches unresolved sender ownership.
Mail Tower
0/5
Microsoft 365 grouped cleanly
SendGrid needed manual naming
Forward failure needed review
Kevlarr
4.8/5
Mailchimp classification was faster
Unknown sender review queue
Spoof sample surfaced quickly
Mail Tower handled Microsoft 365 and Google Workspace cleanly after DNS verification. SendGrid and Mailchimp appeared as separate source rows, but the unknown support desk sender needed manual naming, and the SPF pass with visible From mismatch was easier to find than to resolve. The forwarded mail SPF failure sat in the failure view until we checked the DKIM pass and forwarding pattern ourselves.
Kevlarr grouped Microsoft 365 and Google Workspace quickly, then gave clearer names for SendGrid and Mailchimp traffic. The unknown sender appeared in a review queue, and the unauthorized spoof sample surfaced as higher priority than routine noise. The DKIM pass on a marketing subdomain needed a second drilldown, but the workflow still got us to the right owner faster.
User experience
Clarity vs speed
Mail Tower is predictable. Kevlarr is faster once reports arrive.
Mail Tower's interface was easier to explain to a non-specialist during first setup because each domain view stayed simple. Kevlarr asked for more operational trust, but it reduced the time spent chasing the unknown sender and explaining the forwarded SPF failure.
Mail Tower
0/5
Three domains added predictably
Unknown sender required filters
Forwarding needed manual explanation
Kevlarr
4.8/5
Three domains onboarded fastest
Unknown sender surfaced quickly
Forwarding context was clearer
Mail Tower onboarded the corporate domain, marketing subdomain, and parked domain without surprises. The parked domain needed manual treatment as inactive, and the unknown support desk sender took several filters to isolate. When forwarded mail failed SPF, the product showed the failure, but the explanation still depended on our own authentication review.
Kevlarr's onboarding flow got the three domains collecting reports faster, and the dashboard made the unknown sender easier to find once data arrived. It gave better context for forwarded mail with SPF failure by separating it from the unauthorized spoof sample. The tradeoff was navigation depth, because some policy and source views were a few clicks apart.
Support
Self-serve vs hands-on help
Mail Tower gives enough setup guidance. Kevlarr feels more support-led.
Mail Tower worked best when we already knew the DNS owner, sender owner, and escalation path. Kevlarr's setup and partner materials gave more useful handoff context, but paid plan details still required a direct conversation.
Mail Tower
0/5
DNS handoff was usable
Escalation path felt manual
Enterprise onboarding less defined
Kevlarr
4.8/5
Demo support was practical
DNS handoff included context
Enterprise pricing required contact
Mail Tower gave usable DNS handoff details for the three domains, including the inactive parked domain. The support path felt more self-serve when we asked how to treat the support desk sender and the SPF pass with visible From mismatch. Enterprise onboarding was understandable at the pricing table level, but escalation expectations were less explicit.
Kevlarr's support experience was stronger in the situations that needed explanation rather than raw data. The DNS handoff included clearer next steps for Microsoft 365, Google Workspace, SendGrid, and Mailchimp ownership, and the unknown sender had a cleaner escalation trail. Enterprise and MSP onboarding looked more mature, although the commercial path was still contact-led.
Suitability
Internal team vs MSP desk
Mail Tower fits lean internal monitoring. Kevlarr fits recurring client work.
Mail Tower is easier to justify when a single organization wants clear pricing, a small sender list, and basic enforcement movement. Kevlarr is the better fit when account separation, client grouping, and repeatable reports matter each week. For buyers comparing a third option, Suped's product should be checked against MSP workflows and alert quality: client grouping, recurring reports, and noisy alert suppression matter more after week four.
Mail Tower
0/5
Public tiers suit SMBs
Weak client handoff notes
Enterprise needs manual planning
Kevlarr
4.8/5
MSP dashboard fit was stronger
Client reports were cleaner
Pricing blocked quick approval
Mail Tower fit the SMB and internal enterprise use case better than the MSP use case in our setup. Account separation existed through the custom MSP plan, but the client handoff notes around the parked domain, the marketing subdomain, and the support desk sender remained manual. Recurring reporting was adequate for an internal owner, not ideal for a partner managing many customers.
Kevlarr was more natural for MSP and operator work. Customer and domain management, PDF reporting, API-first partner positioning, and optional customer access all matched the handoff pattern we tested. The weak point was budget approval, because the free monitoring tier was public but paid DMARC, managed DMARC, and MSP pricing were not public.
What each tool feels like after 90 days of real use
Mail Tower
Budget-conscious internal DMARC teams
After 90 days, Mail Tower felt like a clean DMARC reporting layer for teams that already know how their mail should authenticate. Microsoft 365 and Google Workspace were easy to recognize, and SendGrid plus Mailchimp were visible enough once we named them. The parked domain stayed quiet, which made it useful as a control.
The harder work started when the data needed judgment. The support desk sender needed manual classification, forwarded mail with SPF failure needed a human explanation, and the spoof sample did not produce the same sense of urgency we saw in Kevlarr. Mail Tower can still support a move toward quarantine or reject, but the enforcement plan depends more on the operator.
Where it wins
Clear public pricing
Straightforward DNS setup
Readable per-domain reports
Good fit for known senders
Where it lags
Manual sender classification
Limited alert routing
Weak MSP handoff workflow
No hosted SPF or MTA-STS
Pricing
From €10 / month
Free tier
No public free tier
Onboarding
Three domains in 42 minutes
G2 rating
0.0 / 5
Kevlarr
MSPs and operators managing many domains
Kevlarr felt more operational after the first week of reports. The corporate domain, marketing subdomain, and parked domain were easier to scan as a group, and the review flow got us to the unknown support desk sender faster. SendGrid and Mailchimp classification took less cleanup than Mail Tower.
The strongest day-to-day difference was noise handling. Forwarded mail with SPF failure was less distracting, the spoof sample surfaced quickly, and recurring reports made more sense for client handoff. The main friction was commercial clarity, because the public pages did not tell us what the paid DMARC or MSP path would cost at scale.
Where it wins
Fast sender triage
Better forwarding context
Useful MSP workflows
Strong support handoff
Where it lags
Paid pricing not public
Navigation takes learning
No hosted SPF or MTA-STS
No blocklist or blacklist monitoring
Pricing
Free monitoring; paid pricing not public
Free tier
Free monitoring available
Onboarding
Three domains in 28 minutes
G2 rating
4.8 / 5
Pricing
Mail Tower
Kevlarr
Suped
Small
1 domain, up to 1k emails / month.
€10 / month
Small Enterprises covers 5 active domains and unlimited reports.
$0
Official free monitoring is public, but limits are not public.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
€10 / month
Domain count fits the entry tier; employee band can force a higher plan.
Not publicly listed as of May 15, 2026
Paid DMARC monitoring limits and upgrade triggers are not public.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
€20 / month
Medium Enterprises covers 10 active domains and unlimited reports.
Not publicly listed as of May 15, 2026
Managed DMARC pricing and volume bands are not public.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
€50 / month
Large Enterprises covers 25 active domains and includes API access.
Not publicly listed as of May 15, 2026
MSP and enterprise partner pricing require a commercial conversation.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Mail Tower figures are public list prices in euros, mapped to domain needs because Mail Tower prices by organization size rather than email volume. Kevlarr's $0 entry is its public free monitoring tier; Kevlarr paid DMARC, managed DMARC, and MSP amounts were not publicly listed as of May 15, 2026. Pricing was checked as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Turn findings into fixes
Mail Tower showed the forwarded SPF failure and unknown support desk sender, but the owner notes and next steps stayed manual. Suped's product connects source identification to guided fix steps so the operator has a clearer handoff.
Keep pricing visible
Kevlarr's free monitoring tier was public, but paid DMARC and MSP pricing were not public in our buying path. Suped's product publishes starter pricing, which helps small teams and MSPs model cost before procurement.
Cover hosted records
Neither reviewed product covered hosted SPF, hosted MTA-STS, or blocklist (blacklist) monitoring in the tested workflow. Suped's product covers those operational gaps for teams that want reporting and record management in one place.
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 Mail Tower 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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