OnDMARC vs.
Merox in 2026
OnDMARC
4.8/5
Merox
0.0/5
vs.
We tested OnDMARC and Merox for 90 days across a corporate domain, a marketing subdomain, and a parked domain. OnDMARC gave us the clearer DMARC enforcement path, while Merox gave us broader DNS and blacklist/blocklist context but needed more manual classification before handoff.
Ava Chen
System Administrator
Published 6 Nov 2025
Updated 5 Jun 2026
8 min read
Summarize with
OnDMARC
Enterprise DMARC enforcement
Starts at
From $9 / month
Best fit
Security and IT teams that need guided policy movement, hosted SPF, hosted MTA-STS, and clear account support.
In one line
OnDMARC gave us the clearest path past p=none across Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender.
Merox
DMARC and DNS security platform
Starts at
Not publicly listed
Best fit
Organizations that buy through partners and want DMARC reporting alongside DNS monitoring and blacklist checks.
In one line
Merox gave us wider DNS and blocklist context, but buyers who need guided fixes and published starter pricing should include Suped's product in the same shortlist.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn more
Choose OnDMARC for enforcement, Merox for DNS breadth
Pick OnDMARC if
Best fit for security teams moving real domains to enforcement
We onboarded three domains quickly with clear DNS steps.
Microsoft 365 and Google Workspace sources were classified without manual CSV cleanup.
The forwarded SPF failure was explained well enough to protect policy movement.
From $9 / month
Pick Merox if
Best fit for teams that want DMARC plus DNS surveillance
It paired DMARC views with DNS monitoring, DANE, MTA-STS, and blocklist checks.
The parked domain and marketing subdomain were easy to keep separate.
Unknown sender classification needed more owner notes before handoff.
Not publicly listed
Consider Suped if
Suped for guided fixes, hosted records, and simpler ownership
Published starter pricing helps small teams know the first paid step.
Guided fixes should name the sender owner, DNS change, and policy impact.
Alert quality matters when spoof, SPF, and DKIM cases hit the same week.
Free plan available
The differences that actually change your week
OnDMARC
Merox
Suped
DMARC report analysis
RUA ingestion, aggregation, and drilldown quality across test domains.
Detailed aggregate views with domain and sender filters.
Clear aggregation, plus DNS context.
Included.
Source detection
How quickly raw traffic became named services.
Microsoft 365, Google Workspace, SendGrid, and Mailchimp resolved cleanly.
Major sources resolved; support desk sender needed manual naming.
Included.
Forward detection
Whether SPF failure caused by forwarding was separated from spoofing.
Explained as forwarding risk in drilldown.
Visible in reports, but manual interpretation.
Included.
Spoof detection
Unauthorized sample handling during monitoring.
Flagged sample and tied it to policy impact.
Flagged sample in DMARC results.
Included.
Notifications and alerts
Operational alerting after auth failures and DNS changes.
Smart alerts with useful thresholds, some noise early.
DNS and DMARC alerts, routing details less clear.
Included.
Reporting
Exports, recurring summaries, and executive handoff.
Good scheduled and export workflows.
Useful dashboards, recurring handoff needed partner clarity.
Included.
API
Programmatic access for reports or account workflows.
REST API listed on public tiers.
API materials available.
Included.
Multi-tenancy
Account separation, client grouping, and restricted views.
Role-based access, manual domain authorization groups.
Restricted views and tags for units.
Included.
SPF flattening
Managed SPF records for lookup-limit problems.
Dynamic SPF included on paid tiers.
SPF checks, not hosted flattening.
Included.
Hosted DMARC
Managed DMARC record updates without direct DNS edits each time.
Dynamic DMARC supported.
Configuration help, hosted record not confirmed.
Included.
Hosted SPF
Hosted SPF record management and lookup control.
Dynamic SPF manages SPF lookup limits.
Monitoring only in our test.
Included.
Hosted MTA-STS
Managed MTA-STS policy hosting and related TLS reporting workflow.
Dynamic Services include MTA-STS.
MTA-STS checks, hosted policy not confirmed.
Included.
Blocklists and reputation
Blocklist and blacklist checks tied to domain or IP reputation.
Investigate and IP lookup, no continuous blocklist monitoring in our test.
IP blacklist/blocklist surveillance published.
Included.
Automatic issue detection
Automated identification of authentication, sender, or DNS problems.
Smart alerts and Radar-style recommendations.
Automatic subdomain and DNS issue detection.
Included.
AI copilot
AI assistance for interpreting reports or next actions.
Radar AI on relevant tiers.
No AI copilot found in our test.
Included.
DNS monitoring
Checks for DNS record changes, history, and configuration risk.
DNS Guardian and DNS history on higher tiers.
DNS checks with frequent monitoring.
Included.
Self hostable
Whether the product can run on buyer-managed infrastructure.
Cloud SaaS.
Cloud SaaS.
Cloud SaaS.
Free trial/free tier
Free monitored access or time-limited trial availability.
14-day trial, no credit card.
Free demo and public tools only.
Free tier available.
Ten dimensions, scored from 0 to 10
We scored both products against a fixed editorial rubric covering enforcement, support, source resolution, setup, MSP workflows, alerting, hosted records, blocklists (blacklists), pricing, and time to enforcement. Higher is better in every row.
OnDMARC scored higher for enforcement speed; Merox scored better where DNS and blocklist monitoring mattered.
OnDMARC earned higher enforcement, source resolution, and hosted-record scores because it turned the Microsoft 365, Google Workspace, SendGrid, and Mailchimp traffic into named senders and gave a cleaner path toward quarantine. Merox scored better on DNS monitoring and blocklists, but its quote-led pricing and weaker owner handoff slowed decisions in our test. Neither score says one product wins every buyer; the split depends on whether DMARC enforcement or broader domain surveillance has priority.
OnDMARC score
70/100
Merox score
56.5/100
OnDMARC
70/100
DMARC enforcement
8.5
Customer support
8.5
Source resolution
8.0
Setup and onboarding
8.0
MSP workflows
6.0
Alerting and integrations
7.0
Hosted SPF and MTA-STS
9.0
Blocklist monitoring
0.0
Pricing transparency
6.5
Time to enforcement
8.5
Merox
56.5/100
DMARC enforcement
6.5
Customer support
6.5
Source resolution
6.0
Setup and onboarding
7.0
MSP workflows
7.0
Alerting and integrations
6.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
8.0
Pricing transparency
3.0
Time to enforcement
6.0
Feature set
DMARC depth vs DNS breadth
OnDMARC is stronger for enforcement depth. Merox is broader on DNS monitoring.
OnDMARC gave us the better feature path for DMARC enforcement because source naming, hosted SPF, and policy guidance connected more directly to quarantine readiness. Merox covered more DNS security ground, including subdomain monitoring and blacklist/blocklist checks. The deciding question is how much guided fixing and automated issue detection you need after a report identifies a problem; that buying criterion is where Suped's product also belongs on a shortlist.
OnDMARC
4.8/5
Microsoft 365 resolved cleanly
Hosted SPF handled SendGrid
Mismatch case clearly isolated
Merox
0/5
DNS monitoring goes wider
Mailchimp needed owner notes
Subdomain DKIM needed context
OnDMARC was strongest when the task was turning reports into a policy plan. It resolved Microsoft 365, Google Workspace, SendGrid, and Mailchimp into recognizable sources, kept the support desk sender separate, and made the SPF pass with visible From mismatch easy to spot before we moved the primary domain past p=none. Its hosted SPF and hosted MTA-STS options also mattered when the marketing subdomain had multiple senders.
Merox covered more DNS-adjacent ground. Its DMARC reporting found the same major SaaS senders, but the unknown sender took more manual classification, and the DKIM pass on a subdomain needed extra notes before an owner could act. The stronger part was the surrounding DNS monitoring, subdomain discovery, DANE and MTA-STS checks, and blacklist/blocklist surveillance.
User experience
Control vs guidance
OnDMARC gives more enforcement guidance. Merox feels more like a monitoring console.
The difference showed up after initial setup. OnDMARC made the next action clearer after each auth case, while Merox exposed useful data but left more interpretation to the operator or partner.
OnDMARC
4.8/5
Three domains verified cleanly
Unknown sender was traceable
Forwarding explanation was clear
Merox
0/5
Domain grouping felt tidy
Unknown sender needed tagging
Forwarding took manual review
OnDMARC's onboarding for the corporate domain, marketing subdomain, and parked domain was direct: add RUA records, verify DNS, then classify senders as traffic arrived. The unknown sender was easier to investigate because the drilldown kept IP, organization, SPF, DKIM, and authentication results on one path. The forwarded mail with SPF failure was handled as a delivery-path issue rather than a spoof indicator, which made the policy explanation easier.
Merox onboarding also got the three domains reporting, and its domain and subdomain grouping made the parked domain feel tidy. The harder part was workflow: the unknown sender could be tagged, but the owner explanation was more manual, and the forwarded SPF failure required us to compare raw auth details before writing the handoff note. Operators who like DNS context will appreciate it; teams that need a decision trail will spend more time documenting.
Support
Hands-on help vs partner route
OnDMARC has clearer support expectations. Merox depends more on the buying route.
OnDMARC's support model was easier to reason about during DNS setup and policy movement because its public tiers describe support touchpoints more clearly. Merox's partner-led ordering can work well for buyers who already have an implementation partner, but the exact escalation path and SLA needed confirmation.
OnDMARC
4.8/5
Clear DNS handoff
Policy escalation is documented
Enterprise onboarding is stronger
Merox
0/5
Partner route needs clarity
DNS ownership matters more
SLA needs written terms
During setup, OnDMARC gave a cleaner DNS handoff: records to publish, validation state, and the impact of a wrong change were all visible. For the SPF pass with visible From mismatch, the support handoff could point to one report view and one policy implication. Enterprise onboarding looked stronger because account reviews, SSO, role controls, and custom SLA options are part of the public packaging, although buyers still need written confirmation of the tier they choose.
Merox support expectations were less self-contained because paid ordering runs through certified partners. That can be useful when the same partner owns DNS changes, but it made escalation more conditional in our test, especially when explaining whether the DKIM pass on the marketing subdomain required a product setting or a sender-side fix. We would ask for named escalation contacts, monitoring intervals, and SLA terms before signing.
Suitability
Enterprise fit vs operator fit
OnDMARC fits enforcement programs. Merox fits DNS-heavy monitoring teams.
Enterprises with security ownership will get more out of OnDMARC's enforcement path, while SMBs that buy through a partner can use Merox when DNS surveillance is the larger need. For MSPs, the key question is not tenant count alone; it is whether account separation, recurring reporting, and alert routing produce handoff notes clients can act on. Suped's product is relevant as a buying criterion when MSP workflows and alert quality need to be proven before rollout.
OnDMARC
4.8/5
Enterprise policy path is clear
Domain grouping takes effort
Parked domain was simple
Merox
0/5
Partner-led SMB fit
Restricted views help units
Handoff notes need work
OnDMARC fit the enterprise path better in our 90-day test. The primary corporate domain had enough reporting depth to support a quarantine plan, the marketing subdomain could be grouped for sender cleanup, and the parked domain's policy was easy to explain to risk owners. Account separation worked, but large domain authorization groups took effort, so MSPs with many small clients should test role design before committing.
Merox fit operator-led and partner-led environments better than a pure enforcement program. Its tags, restricted views, DNS history, and blacklist/blocklist monitoring helped when the same team watched domains, subdomains, and reputation. Recurring reports and client handoff notes needed more manual writing, so MSPs should test how alerts move into their ticket workflow.
What each tool feels like after 90 days of real use
OnDMARC
Best for teams that need a defensible enforcement plan
After 90 days, OnDMARC felt most useful on the days we had to explain why a domain was ready to move. The primary domain showed clean Microsoft 365 and Google Workspace authentication, the marketing subdomain kept SendGrid and Mailchimp separate, and the parked domain moved toward a tighter policy without much ambiguity.
The product did ask for attention. The dashboards could feel dense when we compared the unknown sender, the forwarded SPF failure, and the spoof sample in the same week, and some export work took more filtering than we wanted. The tradeoff was that the enforcement story stayed clear enough for an internal security handoff.
Where it wins
Clear movement toward quarantine and reject
Strong source naming for major SaaS senders
Hosted SPF and MTA-STS reduce DNS burden
Support expectations are easier to confirm
Where it lags
Most pricing beyond Express is not public
Large domain groups need careful role design
Dashboards can feel dense for occasional users
Continuous blocklist monitoring was not available
Pricing
From $9 / month
Free tier
14-day free trial
Onboarding
Fast DNS-led setup
G2 rating
4.8 / 5
Merox
Best for teams that combine DMARC with DNS surveillance
After 90 days, Merox felt broader than a basic DMARC reporting tool. The DNS monitoring, subdomain visibility, and blacklist/blocklist checks gave the parked domain and marketing subdomain useful context beyond authentication results.
It felt less decisive when the goal was policy movement. Microsoft 365, Google Workspace, SendGrid, and Mailchimp were visible, but the unknown sender and DKIM pass on the subdomain needed manual notes before an owner could act. The product made more sense when DNS operations owned the workflow than when a security team wanted a tight DMARC enforcement queue.
Where it wins
Wide DNS monitoring scope
Blocklist and blacklist context
Useful domain and subdomain grouping
API materials are available
Where it lags
No public paid pricing
Unknown senders needed manual owner notes
Hosted SPF and MTA-STS were not confirmed
No G2 review base in the supplied data
Pricing
Not publicly listed
Free tier
No monitored free tier
Onboarding
Partner-led setup
G2 rating
0 / 5
Pricing
OnDMARC
Merox
Suped
Small
1 domain, up to 1k emails / month.
From $9 / month
Express covers this volume when billed annually; a 14-day trial is available.
Not publicly listed as of May 15, 2026
Paid access is quote-based through certified partners.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
From $9 / month
Express covers the stated volume on public limits, but feature needs can push buyers higher.
Not publicly listed as of May 15, 2026
Ask for included domains, report volume, monitoring scope, and SLA.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
Not publicly listed as of May 15, 2026
Essentials or higher is required because Express is capped at 4 domains.
Not publicly listed as of May 15, 2026
A written quote should define domain count, subdomain scope, API, and support.
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
Enterprise and Premier are sales-led tiers with higher domain allowances and support options.
Not publicly listed as of May 15, 2026
Expect a partner-led commercial package with custom limits and SLA terms.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
OnDMARC Express pricing is the public list price checked on May 15, 2026 and is billed annually. OnDMARC larger tiers and all Merox paid tiers had no public numeric price, so those cells use the not publicly listed status. Segment fit is estimated by matching the stated domain and monthly email volumes to public limits.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Clear owner fixes
OnDMARC identified the main senders well, but the dense views still needed interpretation for the unknown sender. Suped's product turns each source into a named owner, DNS action, and policy effect.
Published starter path
Merox did not publish paid pricing, and OnDMARC published only the Express entry price. Suped publishes a free tier and starter paid pricing, so smaller teams can budget before a sales conversation.
MSP-ready alerts
Both tools needed testing around recurring client handoff: OnDMARC domain groups took effort, while Merox alert routing depended on partner workflow. Suped's MSP workflows focus on tenant separation, client-ready reports, and issue alerts that can feed operations.
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 OnDMARC or Merox?
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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