Mail Tower vs.
Merox in 2026
Mail Tower
Merox
vs.
We tested Mail Tower and Merox 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. Mail Tower felt cleaner for direct DMARC monitoring and enforcement planning, while Merox covered more DNS security and reputation surface but needed more buyer diligence around pricing and partner-led setup.
Published 4 Nov 2025
Updated 31 May 2026
8 min read
Summarize with
Mail Tower
DMARC reporting for smaller teams
Starts at
From 10€ / month
Best fit
SMBs that want public pricing and clear domain limits
In one line
Mail Tower gave us a straightforward path for adding domains, reading aggregate reports, and planning a cautious move toward enforcement.
Merox
DMARC and DNS security platform
Starts at
Not publicly listed
Best fit
Security-led teams buying through a certified partner
In one line
Merox gave us broader DNS, blacklist, blocklist, and reputation context, but the commercial path needs a partner quote before budget owners can compare it cleanly.
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 Mail Tower for clear DMARC basics or Merox for wider DNS security
Pick Mail Tower if
Best for SMB teams that want a readable DMARC workspace without custom procurement
The three-domain setup was quick, and the parked domain was easy to keep separate from active mail streams.
Microsoft 365 and Google Workspace sources were readable after the first reporting cycle, with fewer clicks than Merox.
The unauthorized spoof sample was easy to isolate before we discussed a move beyond monitoring.
From 10€ / month
Pick Merox if
Best for security teams that want DMARC tied to DNS monitoring and reputation checks
The marketing subdomain benefited from subdomain mapping and DNS security context around Mailchimp and SendGrid.
Forwarded mail with SPF failure was easier to explain because DNS and transport signals sat near DMARC evidence.
Blacklist and blocklist surveillance gave the parked domain useful reputation checks beyond aggregate DMARC.
Not publicly listed
Consider Suped if
A third option when the priority is guided fixes, hosted records, and simpler ownership
Use guided fixes as a buying criterion when a team needs sender identification and clear next steps, not only raw report views.
Check whether alerts separate real spoofing, unknown sources, and forwarding noise before the tool becomes an operations queue.
For MSP workflows or small teams, published starter pricing and client-ready handoff notes reduce budget and ownership friction.
Free plan available
The differences that actually change your week
Mail Tower
Merox
Suped
DMARC report analysis
Aggregate report processing and domain-level authentication views.
Supported
Supported
Supported
Source detection
Sender naming and classification beyond raw IPs and organizational domains.
Manual workflow
Supported
Supported
Forward detection
Recognition of forwarded mail where SPF fails but DKIM or ARC context explains the path.
Partial
Partial
Supported
Spoof detection
Isolation of unauthorized mail using the domain without an approved sending source.
Supported
Supported
Supported
Notifications and alerts
Operational notification quality and routing options for new risk events.
Basic
Supported
Supported
Reporting
Recurring summaries, exports, and management-ready reporting.
Supported
Supported
Supported
API
Programmatic access for reporting or operational workflows.
Large tier or add on
Documented
Supported
Multi-tenancy
Account separation for clients, subsidiaries, or business units.
MSP plan
Restricted views
Supported
SPF flattening
Managed handling of SPF lookup limits and sender includes.
Not supported
Configuration assistance
Supported
Hosted DMARC
Hosted DMARC record management instead of manual DNS edits for every change.
Reporting only
Unclear
Supported
Hosted SPF
Hosted SPF record management for easier sender changes.
Not supported
Unclear
Supported
Hosted MTA-STS
Hosted policy and reporting workflow for MTA-STS adoption.
Not supported
Configuration assistance
Supported
Blocklists and reputation
Blacklist and blocklist monitoring, reputation checks, and related alerts.
Not supported
Supported
Supported
Automatic issue detection
Automated surfacing of SPF or DKIM mismatches, unknown senders, and authentication drift.
Manual workflow
Partial
Supported
AI copilot
AI-assisted interpretation and remediation support.
Not supported
Not tested
Supported
DNS monitoring
Ongoing checks for record changes, DNS posture, and related failures.
DMARC focused
Supported
Supported
Self hostable
Ability to run the product in a self-managed environment.
Not supported
Not supported
Not supported
Free trial/free tier
No-cost access for testing before committing to a paid plan.
Paid tier
Free demo only
Free plan
Ten dimensions, scored from 0 to 10
We scored each product against a fixed editorial rubric after the same 90-day setup, sender mix, authentication cases, and review tasks. Higher is better in every row.
Mail Tower scores higher for clear DMARC enforcement basics, while Merox scores higher for DNS security breadth.
Mail Tower made the enforcement path easier to discuss because Microsoft 365, Google Workspace, and the unauthorized spoof sample were visible without much configuration overhead. Merox scored higher where the work moved outside core DMARC reporting, especially DNS monitoring, blacklist and blocklist checks, API coverage, and MTA-STS-related guidance. Mail Tower scored 0 where we found no supported feature, including hosted SPF, hosted MTA-STS, and reputation monitoring.
Mail Tower score
52.5/100
Merox score
62/100
Mail Tower
52.5/100
DMARC enforcement
7.0
Customer support
6.0
Source resolution
6.5
Setup and onboarding
7.5
MSP workflows
5.5
Alerting and integrations
5.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
8.0
Time to enforcement
7.0
Merox
62/100
DMARC enforcement
6.5
Customer support
7.0
Source resolution
7.0
Setup and onboarding
6.0
MSP workflows
7.0
Alerting and integrations
7.5
Hosted SPF and MTA-STS
4.0
Blocklist monitoring
8.0
Pricing transparency
3.0
Time to enforcement
6.0
Feature set
DMARC focus vs DNS breadth
Mail Tower is cleaner for core DMARC reporting. Merox covers more security surface.
Mail Tower did the narrower job with fewer distractions: collect reports, show authentication outcomes, and help us decide which sources were safe. Merox covered more adjacent DNS and reputation work, which mattered for the marketing subdomain and parked domain. A useful buying criterion here is whether guided fixes and automated issue detection explain what to change, not only what failed.
Mail Tower
Clear Microsoft 365 grouping
Readable spoof isolation
Manual unknown sender classification
Merox
Broad DNS security context
Mailchimp subdomain mapping
Mismatch case easier to inspect
Mail Tower handled the core sender set in a way that was easy to review. Microsoft 365 and Google Workspace grouped into expected sources, SendGrid and Mailchimp were visible on the marketing subdomain after the first full reporting cycle, and the unauthorized spoof sample stood out because it had no approved source history. The weak spot was the unknown sender: we could classify it, but the workflow felt manual and depended on our interpretation of the report details.
Merox had the broader feature set during the same tests. It tied DMARC results to DNS posture, subdomain discovery, DNS history, API materials, and blacklist and blocklist surveillance, so SendGrid and Mailchimp checks had more context than authentication alone. The SPF pass with visible from mismatch and the DKIM pass on a subdomain were easier to investigate, but the product exposed more surfaces than a small team needs on day one.
User experience
Simplicity vs investigation depth
Mail Tower is faster to read. Merox gives investigators more context.
Mail Tower had the lower-friction daily workflow once the three domains were active, especially for checking whether known senders were passing the expected authentication checks. Merox asked for more setup attention and more interpretation, but gave better context when the question moved into DNS history or reputation.
Mail Tower
Fast three-domain onboarding
Unknown sender needs review
Forwarding explanation takes notes
Merox
Deeper investigation views
More setup decisions
Forwarding context easier
Mail Tower's onboarding flow was direct: the primary domain, marketing subdomain, and parked domain were added without us needing to design a folder model first. The unknown sender was visible, but assigning ownership took cross-checking against message volume, source names, and IP context. The forwarded mail with SPF failure was understandable after drilldown, although the product did not turn that case into a plain operational explanation without manual notes.
Merox felt heavier during onboarding because the account structure, domain surveillance, and DNS security surfaces needed decisions before the workspace felt tidy. The upside appeared when we investigated the unknown sender and the forwarded mail SPF failure: DNS context and history helped us separate a likely forwarding artifact from a real unauthorized source. For a small team, that extra depth slowed routine checks; for a security team, it reduced context switching.
Support
Self-service clarity vs partner help
Mail Tower is easier to start alone. Merox suits teams that expect assisted rollout.
Mail Tower's public tiering and DNS setup path made expectations clearer before we needed support. Merox's partner-led model can help larger rollouts, but it also means support scope, escalation path, and commercial ownership need written confirmation before purchase.
Mail Tower
Clear DNS handoff
Simple self-service start
Enterprise depth needs confirmation
Merox
Partner-assisted setup
Escalation needs written scope
Enterprise onboarding fit
With Mail Tower, the DNS handoff was simple enough for a technical admin to complete without a project call. The product made RUA record setup clear for the primary domain and marketing subdomain, and the parked domain fit naturally into the inactive-domain allowance. Escalation expectations were less enterprise-shaped in our test, so teams with formal onboarding, procurement, and security review needs should confirm support depth before relying on it.
Merox looked better suited to a supported rollout where a certified partner helps define domain scope, monitoring depth, and escalation expectations. That mattered for DNS security questions, API access, and enterprise onboarding, but it made the first buying step less transparent. The support handoff should include who owns DNS edits, who responds to blacklist or blocklist events, and what SLA applies to authentication failures.
Suitability
SMB fit vs security operator fit
Mail Tower fits lean DMARC ownership. Merox fits broader domain security operations.
Choose Mail Tower when the buyer needs a small, understandable DMARC reporting tool with public pricing and limited account complexity. Choose Merox when domain grouping, restricted views, DNS history, and blacklist or blocklist workflows matter enough to justify partner scoping. For MSP workflows, recurring reports and alert quality should be treated as purchase criteria because handoff quality changed how quickly we could close issues.
Mail Tower
Best for lean SMBs
Simple domain grouping
MSP scope needs confirmation
Merox
Fits domain portfolios
Restricted views useful
Quote path adds friction
Mail Tower made the most sense for SMB or lean IT ownership. The primary domain, marketing subdomain, and parked domain could be reviewed without building a complex tenant model, and recurring reporting was easy to imagine for a single organization. For MSP work, the custom plan is relevant, but we would want written confirmation on client grouping, recurring report templates, and handoff notes before using it across many customers.
Merox suited teams that think in portfolios: subsidiaries, business units, subdomains, and monitored DNS surfaces. Restricted views and tagging helped with account separation during the test, especially when the marketing subdomain generated separate Mailchimp and SendGrid questions. For SMBs, the quote-based buying path and setup depth add friction; for enterprise or MSP buyers, those same controls can support cleaner client or department handoff.
What each tool feels like after 90 days of real use
Mail Tower
A practical DMARC monitor for teams that want clarity before breadth
After 90 days, Mail Tower felt like a tool we could hand to a small IT team without much ceremony. The three test domains stayed understandable, the parked domain did not clutter the primary domain review, and known senders such as Microsoft 365, Google Workspace, SendGrid, and Mailchimp were easy enough to revisit during weekly checks.
The tradeoff was that Mail Tower expected us to supply more operational judgment. The unknown sender needed manual classification, the forwarded mail SPF failure needed notes before it would make sense to a non-specialist, and there was no hosted SPF, hosted MTA-STS, or blacklist and blocklist monitoring layer to close adjacent risks.
Where it wins
Clear public paid tiers
Fast domain setup
Readable spoof sample review
Simple weekly reporting rhythm
Where it lags
Manual unknown sender work
Basic alert routing
No reputation monitoring
No hosted SPF or MTA-STS
Pricing
From 10€ / month
Free tier
No
Onboarding
Fast
G2 rating
0.0 / 5
Merox
A broader DNS security workspace for teams with partner-led buying
Merox felt more like a domain security platform than a narrow DMARC report viewer. That helped when the marketing subdomain created separate SendGrid and Mailchimp questions, when the parked domain needed reputation checks, and when the forwarded SPF failure required context beyond a single authentication result.
The same breadth made the workspace slower to settle. Pricing had to be clarified through a partner route, role and view design took more thought, and teams that only need DMARC enforcement planning will spend time around controls they do not need immediately.
Where it wins
Broad DNS security context
Blacklist and blocklist coverage
Useful restricted views
Stronger investigation depth
Where it lags
No public numeric pricing
Partner scoping required
Heavier initial workspace design
Public trial terms unclear
Pricing
Not publicly listed
Free tier
No
Onboarding
Moderate
G2 rating
0 / 5
Pricing
Mail Tower
Merox
Suped
Small
1 domain, up to 1k emails / month.
10€ / month
Public Small Enterprises tier covers up to 5 active domains and unlimited aggregate reports.
Not publicly listed as of May 15, 2026
Paid monitoring is quote-based through a certified partner.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
10€ / month
The Small Enterprises tier still fits the domain count if organization size is under 50 employees.
Not publicly listed as of May 15, 2026
Ask for included domains, report volume, DNS monitoring scope, and support terms.
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
The Medium Enterprises tier includes 10 active domains, but API access is not included.
Not publicly listed as of May 15, 2026
Pricing depends on partner quote, domain scope, monitoring depth, and support requirements.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
50€ / month
The Large Enterprises tier includes 25 active domains, 365 days of data access, and API access.
Not publicly listed as of May 15, 2026
Expect a custom quote for larger estates, API use, onboarding, and SLA needs.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Mail Tower amounts are public list prices checked as of May 15, 2026, using the lowest listed tier that fits each segment's domain count. Merox does not publish numeric paid pricing, so every Merox price cell is a public price status rather than an estimate.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Fixes without manual triage
Mail Tower made unknown sender ownership and forwarded SPF explanations depend on manual notes. Suped's product is built around guided issue resolution so teams can move from source detection to the next DNS or sender action faster.
Published pricing path
Merox required partner scoping before budget comparison. Suped publishes starter pricing and keeps the buying path clearer for teams that need to compare domain limits, email volume, and retention before a sales conversation.
Operational handoff for teams
Both products required extra diligence around client handoff: Mail Tower on MSP scope, Merox on alert routing and escalation terms. Suped's workflows focus on source ownership, alert quality, and MSP-ready domain separation.
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 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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