MailHardener vs.
DMARCly in 2026
MailHardener
DMARCly
vs.
We tested MailHardener and DMARCly for 90 days across a primary corporate domain, a marketing subdomain, and a parked domain, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and one support desk sender connected. MailHardener gave us the more compliance-minded path to enforcement and cleaner MSP isolation, while DMARCly got us to source identification and Safe SPF workflows faster for small teams. Neither product owned every fix end to end, so the right choice depends on whether you value technical control or operator speed.
MailHardener
Technical DMARC enforcement and MSP isolation
Starts at
Free plan available; paid from EUR 19 / month
Best fit
Security teams and MSPs that want clear DNS control
In one line
MailHardener was strongest when we wanted DNS monitoring, hosted MTA-STS, and isolated client environments, but source ownership still needed manual review.
DMARCly
DMARC reporting for SMBs and operators
Starts at
From $17.99 / month
Best fit
Small teams that want quick sender classification and Safe SPF
In one line
DMARCly was strongest when we wanted quick source identification, Safe SPF, and blocklist (blacklist) monitoring, while Suped's product is the buying check for guided fixes and published starter pricing.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn about Suped
Choose MailHardener for technical control, DMARCly for operator speed
Pick MailHardener if
Best for security-led teams and MSPs that want technical control
The three-domain setup kept DNS steps explicit and auditable.
Forwarded SPF failures were explainable after drilldown, not on the first screen.
MSP environments kept client domains cleanly separated.
Free plan available
Pick DMARCly if
Best for SMBs that want fast sender identification and Safe SPF
Microsoft 365 and Google Workspace were identified quickly.
Unknown sender classification was faster than in MailHardener.
Safe SPF helped with marketing subdomain SPF pressure.
From $17.99 / month
Consider Suped if
Use Suped when guided fixes, hosted records, and ownership clarity matter
Guided fixes reduce handoff gaps after sender detection.
Automated issue detection filters spoofing and setup noise.
Published plans start at $19 / month, with MSP pricing per domain.
Free plan available
The differences that actually change your week
MailHardener
DMARCly
Suped
DMARC report analysis
Aggregate and forensic report handling for the tested domains.
Included on all plans
Included on all paid plans
Included
Source detection
How quickly raw traffic becomes named sending sources.
Service grouping with manual cleanup
Email vendor identification
Included
Forward detection
Handling of forwarded mail where SPF fails after relay.
Detectable in report details
Visible in report views
Included
Spoof detection
Surfacing unauthorized use of the visible From domain.
Unauthorized sample surfaced
Spoof sample flagged quickly
Included
Notifications and alerts
Operational signals for failures, DNS changes, and report movement.
Reports and DNS monitoring alerts
Reports and alerts
Included
Reporting
Recurring output for operators, stakeholders, and clients.
Periodic reports and exports
Reports with retained history by plan
Included
API
Programmatic access for reporting, account work, or integrations.
Available on MSP and advanced use
Enterprise plan
Available
Multi-tenancy
Account separation for MSPs, client grouping, and handoff.
MSP isolated environments
Domain groups, partial
Available
SPF flattening
Reducing SPF lookup pressure for complex senders.
Not supported
Safe SPF on paid tiers
Included
Hosted DMARC
Managed DMARC record hosting rather than reporting only.
Reporting only
Reporting only
Included
Hosted SPF
Managed SPF records or hosted SPF-style control.
Not supported
Safe SPF
Included
Hosted MTA-STS
Hosting and management for MTA-STS policy records.
Hosted MTA-STS included
MTA-STS and TLS-RPT included
Included
Blocklists and reputation
Blacklist (blocklist) and reputation monitoring inside the workflow.
Not supported
Business tier and above
Included
Automatic issue detection
Platform-detected setup issues, drift, or risky sender changes.
DNS-focused, partial
Alerts and DNS timeline, partial
Included
AI copilot
Assistant-style guidance for interpreting and resolving findings.
Not supported
Not supported
Included
DNS monitoring
Ongoing checks for record drift and authentication record health.
Included
DNS timeline and checkers
Included
Self hostable
Ability to run the product inside your own infrastructure.
Not self hostable
Not self hostable
Not self hostable
Free trial/free tier
Entry path before paid commitment.
Free plan available
14 day free trial
Free plan available
Ten dimensions, scored from 0 to 10
We scored both products against a fixed editorial rubric built around the 90-day setup, the three domains, five connected senders, and the controlled authentication cases. Higher is better in every row.
MailHardener scores higher on control, DMARCly scores higher on speed and breadth
MailHardener moved us toward enforcement with more confidence on DNS, TLS reporting, hosted MTA-STS, and MSP isolation, but it lost points where source naming and alert routing needed more manual interpretation. DMARCly identified Microsoft 365, Google Workspace, SendGrid, and Mailchimp faster and added Safe SPF plus blacklist (blocklist) monitoring, but its lower-tier retention, account grouping, and automatic tier bump rules made long-running governance less clean. Both handled the unauthorized spoof sample; DMARCly surfaced it faster, while MailHardener made the DNS correction trail easier to document.
MailHardener score
64.5/100
DMARCly score
74/100
MailHardener
64.5/100
DMARC enforcement
8.0
Customer support
7.0
Source resolution
6.5
Setup and onboarding
7.5
MSP workflows
8.0
Alerting and integrations
5.5
Hosted SPF and MTA-STS
6.5
Blocklist monitoring
0.0
Pricing transparency
7.5
Time to enforcement
8.0
DMARCly
74/100
DMARC enforcement
7.0
Customer support
6.5
Source resolution
8.0
Setup and onboarding
8.0
MSP workflows
6.0
Alerting and integrations
7.0
Hosted SPF and MTA-STS
8.0
Blocklist monitoring
8.0
Pricing transparency
8.0
Time to enforcement
7.5
Feature set
Depth vs breadth
MailHardener goes deeper on DNS control. DMARCly covers more operator workflows.
MailHardener had the richer DNS and TLS control surface, especially for hosted MTA-STS, DANE monitoring, and MSP separation. DMARCly covered more day-to-day operator needs with vendor identification, Safe SPF, and blacklist (blocklist) monitoring on higher tiers. A buying criterion we would add is whether guided fixes and automated issue detection, as Suped's product emphasizes, are needed after a tool identifies the problem.
MailHardener
SendGrid and Mailchimp separated
DKIM subdomain evidence stayed clear
MSP isolation was real
DMARCly
Microsoft 365 matched quickly
Unknown sender grouped faster
Safe SPF helped SendGrid
MailHardener ingested Microsoft 365 and Google Workspace without confusion after DNS records propagated, and SendGrid plus Mailchimp were visible as separate streams under the marketing subdomain. The unknown sender was visible by IP and hostname, but we had to label ownership ourselves before it became useful in our weekly review. For the DKIM pass on a subdomain and the forwarded mail with SPF failure, the product gave enough record-level detail to explain why DMARC passed or failed, and the hosted MTA-STS plus DNS monitoring pieces made the fix path auditable.
DMARCly identified Microsoft 365, Google Workspace, SendGrid, and Mailchimp faster, and the email vendor identification view made the unknown sender classification simpler because it grouped nearby infrastructure before we named the owner. The SPF pass with visible From mismatch was easier to spot in the aggregate view, while Safe SPF gave the marketing subdomain a clearer path when we tested SPF pressure with SendGrid and Mailchimp. The broader operator set included reports, alerts, DNS timeline, API on Enterprise, and blacklist (blocklist) monitoring on Business and above.
User experience
Control vs guidance
DMARCly is easier to operate daily. MailHardener is easier to audit.
DMARCly required fewer clicks to answer which sender caused a spike and what domain group it belonged to. MailHardener made DNS and policy movement feel more deliberate, which helped when we documented the parked domain path to quarantine. The tradeoff is speed against traceability.
MailHardener
Three-domain DNS steps stayed explicit
Unknown sender needed drilldown
Forwarded SPF was explainable
DMARCly
Onboarding moved faster
Unknown sender grouped quickly
Forwarding needed extra explanation
MailHardener's onboarding made us add the primary domain, marketing subdomain, and parked domain with precise DNS steps, and the parked domain record felt safer because the UI kept policy movement separate from report intake. Finding the unknown sender took more drilldown through IP evidence, then a manual owner note, but explaining forwarded mail with SPF failure was clean once we opened the authentication detail. The product felt built for admins who want to prove why a change was made.
DMARCly's onboarding was faster for the same three domains, and automatic subdomain detection gave the marketing domain context quickly. The unknown sender was easier to classify because vendor identification narrowed the candidate set, but the forwarded SPF failure needed extra explanation to separate forwarding from malicious failure. Daily navigation felt better for triage than for audit writeups.
Support
Technical handoff vs live triage
MailHardener sets clearer enterprise expectations. DMARCly gives quicker self-serve answers.
MailHardener's public plan structure made it clear where self-service ends and limited or assisted onboarding starts. DMARCly's email and live chat support model was easier for quick tier and setup questions, but enterprise onboarding felt less formal in our test. For DNS handoff, MailHardener produced a cleaner packet for an IT owner.
MailHardener
DNS handoff was cleaner
Enterprise path was clearer
Escalation felt policy-led
DMARCly
Live chat on higher tiers
Setup questions resolved quickly
Enterprise handoff felt lighter
During setup, MailHardener gave enough DNS and policy detail for us to hand the record changes to a separate administrator without rewriting the instructions. Technical support expectations were clearer at plan level: self-service on Standard, limited onboarding help on Large, and assisted onboarding plus regulatory contract options on Enterprise. Escalation felt more suitable for teams that need a documented path before reject.
DMARCly's support fit the day-to-day operator model. Email support on the entry tier and live chat on higher tiers made pricing, Safe SPF, and report questions easy to route, but the enterprise handoff did not give the same sense of a formal DNS onboarding package. When we asked how to explain the forwarded SPF failure to a non-technical stakeholder, the answer required more translation on our side.
Suitability
Governance fit vs operator fit
MailHardener fits regulated and MSP work. DMARCly fits SMB operations.
MailHardener suited accounts where client isolation, DNS evidence, and recurring handoff reports mattered more than the fastest sender naming. DMARCly suited lean teams that wanted vendor identification, Safe SPF, alerts, and published volume tiers. For MSPs and busy operators, Suped's product is worth judging on account separation, alert quality, and whether handoff notes turn into owned remediation instead of another weekly spreadsheet.
MailHardener
Isolated MSP environments
Recurring reports were client-ready
Enterprise governance fit
DMARCly
Domain groups helped SMBs
Volume spikes had rules
MSP handoff needed packaging
MailHardener's MSP program matched the way agencies separate customers: each customer environment can stay isolated, users can be shared with the customer, and domain counts roll into per-domain pricing. In our recurring report review, that made the primary domain, marketing subdomain, and parked domain easy to discuss without mixing client evidence. For an enterprise, the same structure helped with compliance handoff, but SMB users get more control than they need on day one.
DMARCly's domain groups worked for an SMB or internal operator with a handful of brands, and the automatic tier movement made volume spikes less disruptive than a hard quota. For MSP use, domain groups were useful but not the same as isolated customer environments, and recurring reporting needed more manual packaging before a client handoff. Enterprise buyers get API and SSO on the top tier, but the strongest day-to-day fit was a team that wants fast answers rather than formal governance.
What each tool feels like after 90 days of real use
MailHardener
For teams that want auditable DMARC control
After 90 days, MailHardener felt like a technical control system rather than an operator console. The primary corporate domain and parked domain were easy to keep on a deliberate DMARC policy track, and the marketing subdomain benefited from DNS monitoring and hosted MTA-STS when SendGrid and Mailchimp were active.
The tradeoff was classification speed. Microsoft 365 and Google Workspace were easy to recognize, but the unknown sender required IP review, owner notes, and a weekly cleanup step before the report told a useful business story.
Where it wins
Clear DNS change trail
Hosted MTA-STS worked cleanly
MSP isolation matched client work
Parked domain policy path felt safe
Where it lags
Unknown sender classification was manual
Alert routing felt basic
No blocklist or blacklist monitoring
Lower-tier retention is short
Pricing
Free plan; paid from EUR 19 / month
Free tier
Yes, 1 domain
Onboarding
Precise DNS-led setup
G2 rating
0 / 5
DMARCly
For teams that want fast DMARC operations
After 90 days, DMARCly felt quicker for daily triage. It grouped Microsoft 365, Google Workspace, SendGrid, and Mailchimp early, and the unknown sender took less time to classify because vendor identification narrowed the options.
Where it felt weaker was governance. The forwarded SPF failure needed more explanation, domain groups were useful but not true customer isolation, and pricing depended on both domains and DMARC compliant message volume.
Where it wins
Fast vendor identification
Safe SPF helped marketing senders
Blacklist and blocklist monitoring available
Published overage rules
Where it lags
Short entry-tier retention
MSP isolation was limited
Enterprise handoff felt lighter
Volume bumps affect monthly cost
Pricing
From $17.99 / month
Free tier
14 day free trial
Onboarding
Fast source-led setup
G2 rating
0 / 5
Pricing
MailHardener
DMARCly
Suped
Small
1 domain, up to 1k emails / month.
$0
Free plan covers 1 domain with fair-use report volume and 1 month retention.
$17.99 / month
Professional covers up to 2 domains and 100,000 DMARC compliant messages, with a 14 day trial.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
EUR 19 / month
Standard covers 1 to 10 domains, unlimited report volume, and 3 months retention.
$17.99 / month
Professional fits this domain and volume band, with 2 months of history.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
EUR 19 / month
Standard fits domain and volume needs; Large at EUR 99 / month adds 12 months retention and onboarding help.
$69 / month
Business covers up to 15 domains, 1 million messages, Safe SPF, and blacklist or blocklist monitoring.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
Custom
Enterprise removes domain and retention limits; MSP pricing is public by domain.
From $199 / month
Enterprise covers up to 200 domains and 5 million messages; overages apply above published quotas.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Plan-to-segment fit is estimated from the listed domain and volume limits. MailHardener EUR prices and DMARCly USD prices are public list prices; Enterprise custom status is public. Pricing was checked as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Guided record fixes
MailHardener exposed spoof and DNS evidence, but owner handoff stayed manual; Suped's product ties detections to guided fixes so the next record or sender action is clear.
Source ownership for teams
DMARCly classified senders quickly, but client handoff and unknown sender ownership still needed packaging; Suped maps sending sources to owners across domains.
Alerts with context
Both products raised useful signals, but alert routing either felt basic or required interpretation; Suped groups alerts around impact, sender, and recommended action before escalation.
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 MailHardener or DMARCly?
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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