Mail Tower vs.
spfXio in 2026
Mail Tower
spfXio
vs.
We tested Mail Tower and spfXio 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 lighter and cheaper for teams that mainly need DMARC reporting and policy movement, while spfXio was the more hands-on managed option for SPF, DKIM, and DMARC operations.
Mail Tower
Lean DMARC reporting
Starts at
From 10€ / month
Best fit
Small and midsize teams that want public pricing, broad domain coverage, and a practical path toward quarantine or reject.
In one line
Mail Tower gave us clear aggregate reporting across all three domains, but unknown sender ownership and edge-case explanation still required manual work.
spfXio
Managed SPF, DKIM, and DMARC service
Starts at
From $299 / month
Best fit
Teams that want account-managed email authentication help and can fit inside fixed request and reported-email limits.
In one line
spfXio was stronger when the task involved managed records and advisory handoff, but its fixed volume limits made scaling less straightforward.
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 by ownership model and reporting depth
Pick Mail Tower if
Best for teams that want affordable DMARC visibility without a managed-service wrapper
Added the corporate domain, marketing subdomain, and parked domain quickly, with the parked domain treated cleanly as inactive monitoring.
Separated Microsoft 365, Google Workspace, SendGrid, and Mailchimp traffic well enough for a security owner to review authentication trends.
Gave the clearest low-cost route to a quarantine plan after the SPF and DKIM domain-match cases were stable.
From 10€ / month
Pick spfXio if
Best for teams that want managed SPF, DKIM, and DMARC help with scheduled review
Account-managed setup helped with DNS handoff for SPF, DKIM, and DMARC records during initial onboarding.
The forwarded mail SPF failure was easier to explain because the managed-service framing separated authentication failure from DMARC disposition.
Quarterly review on the entry plan fits teams that want recurring validation rather than daily self-serve tuning.
From $299 / month
Consider Suped if
Choose Suped when guided fixes, hosted records, and simpler ownership matter more than raw report views
Guided fixes should turn the unknown sender and visible-from mismatch into owner-ready actions instead of raw report rows.
Automated issue detection and alert quality matter when Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support mail all change at once.
Published starter pricing helps buyers model a 1k-message parked domain, a 100k-message marketing setup, and MSP domain expansion before procurement.
Free plan available
The differences that actually change your week
Mail Tower
spfXio
Suped
DMARC report analysis
Aggregate report parsing, authentication trends, and domain-level drilldowns.
Supported, strong for reporting
Supported, managed-service framing
Supported
Source detection
Ability to identify Microsoft 365, Google Workspace, SendGrid, Mailchimp, support desk traffic, and unknown senders.
Supported, manual classification needed
Supported, account review helps
Supported
Forward detection
Recognition of forwarded mail where SPF fails but DKIM or DMARC context explains the result.
Partial, manual interpretation
Partial, better handoff explanation
Supported
Spoof detection
Visibility into unauthorized mail using the domain without a matching authenticated domain.
Supported
Supported
Supported
Notifications and alerts
Operational alerts for new sources, failures, policy impact, and unusual changes.
Basic alerting
Review-led notifications
Supported
Reporting
Scheduled reports, exports, and recurring summaries.
Supported
Supported with review cadence
Supported
API
Programmatic access for exports, reporting, or operational workflows.
Large tier or add on
Not publicly listed
Supported
Multi-tenancy
Account separation for clients, departments, brands, or business units.
Partial, user and domain based
Partial, managed account model
Supported
SPF flattening
Hosted or managed SPF to reduce lookup pressure and simplify sender changes.
Not supported
Supported in managed plans
Supported
Hosted DMARC
Hosted DMARC record management rather than only reporting against customer-managed DNS.
Reporting only
Supported in managed plans
Supported
Hosted SPF
Managed SPF record hosting or equivalent record-control workflow.
Not supported
Supported in managed plans
Supported
Hosted MTA-STS
Hosted MTA-STS and related TLS reporting workflow.
Not supported
Not publicly listed
Supported
Blocklists and reputation
Blocklist or blacklist monitoring and reputation checks tied to email operations.
Not supported
Not publicly listed
Supported
Automatic issue detection
Automatic identification of configuration gaps, new sender risk, and drift.
Partial, manual follow-up
Partial, review-led follow-up
Supported
AI copilot
AI-assisted investigation or guided troubleshooting for DMARC and DNS issues.
Not publicly listed
Not publicly listed
Supported
DNS monitoring
Monitoring for DNS record drift, removal, or unsafe changes.
Partial
Supported through managed records
Supported
Self hostable
Ability to run the product in a customer-controlled hosting environment.
Not supported
Not supported
Not supported
Free trial/free tier
No-cost entry path for validating setup before paid use.
No free tier listed
30-day free trial
Free plan available
Ten dimensions, scored from 0 to 10
We scored each product against a fixed editorial rubric after the same 90-day setup, using the same domains, senders, authentication cases, and operational review tasks. Higher is better in every row.
Mail Tower scored higher for lightweight DMARC reporting and price clarity, while spfXio scored higher for managed record work.
Mail Tower moved us faster through aggregate report review and policy planning, especially after the SPF and DKIM domain-match cases stabilized. spfXio handled DNS handoff and SPF/DKIM/DMARC managed-service tasks more directly, but its fixed reported-email limits and higher entry price lowered pricing and scale scores. Both products required human interpretation for the unknown sender and the forwarded SPF failure, with spfXio's review process reducing the handoff burden.
Mail Tower score
52.5/100
spfXio score
59.5/100
Mail Tower
52.5/100
DMARC enforcement
7.0
Customer support
6.0
Source resolution
6.5
Setup and onboarding
7.5
MSP workflows
5.0
Alerting and integrations
5.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
8.5
Time to enforcement
7.0
spfXio
59.5/100
DMARC enforcement
7.5
Customer support
8.0
Source resolution
7.0
Setup and onboarding
6.5
MSP workflows
6.0
Alerting and integrations
5.5
Hosted SPF and MTA-STS
5.5
Blocklist monitoring
0.0
Pricing transparency
6.5
Time to enforcement
7.0
Feature set
Reporting depth vs managed records
Mail Tower is better for DMARC report coverage. spfXio is better for managed SPF, DKIM, and DMARC operations.
Mail Tower gave us broader low-cost DMARC coverage across the three-domain setup, while spfXio added managed record work that mattered when DNS ownership was spread across teams. For buyers, the missing middle is guided fixes and automated issue detection that convert visible-from mismatch, unknown sender, and forwarded SPF failure cases into owner-ready tasks.
Mail Tower
Microsoft 365 split cleanly
Mailchimp needed manual labeling
Subdomain DKIM was visible
spfXio
Managed SPF records helped
Google Workspace handoff clearer
Mismatch case explained well
Mail Tower handled Microsoft 365 and Google Workspace cleanly and made it easy to compare SPF pass and DKIM pass traffic where the authenticated domain matched the visible sender domain. SendGrid and Mailchimp were visible in aggregate reporting, but we still had to label the unknown sender manually and document why the DKIM pass on a marketing subdomain did not mean the primary domain was fully ready for enforcement.
spfXio covered the same sender set through a managed SPF, DKIM, and DMARC workflow, so DNS changes felt more coordinated when we adjusted SendGrid, Mailchimp, and the support desk sender. The product was better at turning the SPF pass with visible-from mismatch into a managed-record conversation, but the reporting limits on fixed plans meant we had to watch volume more closely than with Mail Tower.
User experience
Self-serve vs guided service
Mail Tower feels faster for operators. spfXio feels steadier when DNS changes need a human checkpoint.
Mail Tower had the cleaner self-serve path for adding our three domains and reading the first reports. spfXio took more coordination up front, but its managed-service flow made the forwarded SPF failure easier to explain to non-specialists.
Mail Tower
Three domains added quickly
Unknown sender needed digging
Forwarding required interpretation
spfXio
Guided setup felt slower
Forwarding explanation was clearer
Classification still needed owner
Mail Tower's onboarding worked best when we already knew what DNS records to add and how to interpret the first RUA data. The primary corporate domain and marketing subdomain were straightforward, the parked domain was easy to monitor, but finding the unknown sender meant moving between aggregate rows, IP context, and our own sender inventory.
spfXio's UX felt less like a dashboard-first reporting app and more like a service process wrapped around DNS and authentication records. The unknown sender still required classification, but the forwarded mail SPF failure was easier to turn into a handoff note because the flow separated the failure reason from the DMARC result.
Support
Self-serve setup vs account-managed help
spfXio has the stronger support model. Mail Tower is better when the team already knows DMARC operations.
spfXio's dedicated account manager and review cadence made DNS handoff and escalation easier during setup. Mail Tower kept the workflow lighter, but teams without DMARC experience will need their own process for sender owner follow-up and enforcement decisions.
Mail Tower
Self-serve DNS handoff
Escalation needs internal runbook
Enterprise path less explicit
spfXio
Dedicated account manager included
DNS handoff was stronger
Enterprise path clearer
Mail Tower's support expectations matched a lower-cost reporting product: setup was mostly self-serve, DNS instructions were enough for a competent admin, and enterprise onboarding clarity was limited compared with a managed service. When the unauthorized spoof sample appeared, the product showed the signal, but the escalation note and stakeholder explanation came from our own runbook.
spfXio's support model was more useful during DNS handoff because SPF, DKIM, and DMARC record management were part of the plan. The dedicated account manager model helped us package the visible-from mismatch and forwarded SPF failure for review, and the Platinum tier made enterprise onboarding clearer for larger limits, SSO, and monthly review.
Suitability
SMB reporting vs managed operations
Mail Tower fits budget-conscious domain monitoring. spfXio fits teams that want managed authentication work.
Mail Tower makes more sense when a small team or SMB wants DMARC reporting across several domains without high monthly spend. spfXio makes more sense when the buyer values managed DNS handoff and recurring review, but MSPs should check account separation, alert quality, and client-ready reporting before committing.
Mail Tower
Good SMB price fit
Domain grouping was workable
MSP handoff mostly manual
spfXio
Better managed-service fit
Three-domain limit matters
Client grouping needs validation
Mail Tower suited the SMB and internal security-team case best in our test because the corporate domain, marketing subdomain, and parked domain all fit within the lower public tiers. Account separation was workable through domains and users, but recurring reporting and client handoff for MSP work needed more manual packaging.
spfXio suited enterprise and operator-led teams that wanted managed SPF, DKIM, and DMARC more than a low-cost reporting interface. The three-domain public limit worked for our test, but client grouping, recurring MSP reports, and handoff notes would need careful validation for agencies managing many unrelated customer domains.
What each tool feels like after 90 days of real use
Mail Tower
A practical DMARC reporting tool for teams that can own the fixes themselves
Mail Tower felt efficient once the three RUA records were live. The corporate domain, marketing subdomain, and parked domain appeared in reporting without much ceremony, and the unlimited-report model meant we did not have to trim Microsoft 365 or Google Workspace traffic to stay under a cap.
The tradeoff showed up when the data needed explanation. The unauthorized spoof sample was obvious enough, but the unknown sender and forwarded SPF failure required our own notes, especially when we had to explain why a source could pass SPF yet fail DMARC because the visible from domain did not match.
Where it wins
Low public entry price
Useful domain coverage on small tiers
Unlimited aggregate reports
Clear path for basic enforcement planning
Where it lags
No hosted SPF or MTA-STS
Unknown sender workflow felt manual
API limited to higher plan or add on
MSP packaging needs extra process
Pricing
From 10€ / month
Free tier
No free tier listed
Onboarding
Fast self-serve setup
G2 rating
0.0 / 5
spfXio
A managed authentication service for teams that want DNS help included
spfXio felt most useful when the task combined DMARC report review with SPF, DKIM, and DMARC record changes. The managed setup was slower than Mail Tower for the first reports, but the support desk sender and SendGrid configuration were easier to discuss as record-management tasks.
The main constraint was plan fit. The three-domain limit matched our test, but the fixed DMARC reported-email limits required more planning for a larger Microsoft 365 and Mailchimp footprint, and the public pricing did not explain overages, extra domains, or extra users.
Where it wins
Managed SPF and DKIM help
Dedicated account manager included
Useful review cadence
Good DNS handoff process
Where it lags
Higher entry price
Fixed reported-email limits
Overage details not public
No public blocklist monitoring
Pricing
From $299 / month
Free tier
30-day free trial
Onboarding
Guided managed setup
G2 rating
0 / 5
Pricing
Mail Tower
spfXio
Suped
Small
1 domain, up to 1k emails / month.
10€ / month
Small Enterprises includes up to 5 active domains and unlimited aggregate reports.
$299 / month
Quartz MS covers up to 3 domains and 25,000 DMARC reported emails.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
20€ / month
Medium Enterprises includes up to 10 active domains and 180 days of data access.
$499 / month
Diamond MS covers up to 3 domains and 50,000 DMARC reported emails, so 100k messages needs sales validation.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
50€ / month
Large Enterprises includes up to 25 active domains, API access, and 365 days of data access.
Not publicly listed as of May 15, 2026
Platinum MS is needed for customized DMARC report limits and more flexible domain limits.
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
The MSP and personalized-needs plan has no public price.
Not publicly listed as of May 15, 2026
Platinum MS uses sales-led pricing for custom limits, SSO, and monthly report review.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Mail Tower prices are public list prices in euros and were checked on May 15, 2026 for comparison purposes. spfXio Quartz MS and Diamond MS are public list prices in dollars, while Large and Enterprise rows estimate the required plan fit from published limits; Platinum MS pricing is not publicly listed as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Turn unknown senders into assigned fixes
Mail Tower surfaced the unknown sender, but ownership still depended on our spreadsheet. Suped is built to connect sender identification, classification, and next-step guidance in the same workflow.
Reduce managed-record bottlenecks
spfXio helped with DNS handoff, but simple changes still moved through a managed-service rhythm. Suped's hosted records and guided fixes address teams that want control without losing guardrails.
Make alerts operational, not noisy
Both products showed authentication changes, but alert routing and issue priority needed extra process in our test. Suped focuses on actionable alerts for new senders, spoofing risk, DNS drift, and enforcement blockers.
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 spfXio?
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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