Mail Tower vs.
LetsDMARC in 2026
Mail Tower
LetsDMARC
vs.
We tested Mail Tower and LetsDMARC for 90 days across a primary corporate domain, a marketing subdomain, and a parked domain, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and a support desk sender. Mail Tower was the lower-friction option for priced DMARC monitoring, while LetsDMARC gave us broader controls, managed DNS paths, and clearer edge-case handling for policy movement.
Published 4 Nov 2025
Updated 31 May 2026
8 min read
Summarize with
Mail Tower
Low-cost DMARC monitoring
Starts at
From €10 / month
Best fit
Small teams that want public pricing and enough reporting to move one or more domains through DMARC
In one line
We found Mail Tower useful for low-cost monitoring, but teams should compare it against Suped's guided fix workflow if owner handoff is a buying criterion.
LetsDMARC
DMARC enforcement with managed DNS
Starts at
From £264 / year
Best fit
Enterprises and MSPs that want policy workflow, managed DNS, and tenant structure
In one line
We found LetsDMARC stronger when the job included SPF flattening, DNS history, alerts, and sender ownership cleanup across several domains.
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 Mail Tower for simple priced monitoring; choose LetsDMARC for broader controls
Pick Mail Tower if
Best for teams that want public pricing and straightforward DMARC monitoring
The three test domains were live in the same day, and the parked domain stayed easy to review.
Microsoft 365 and Google Workspace were readable quickly, while SendGrid and Mailchimp needed manual naming.
The unauthorized spoof sample was visible in reports, but unknown sender ownership needed our own notes.
From €10 / month
Pick LetsDMARC if
Best for enterprises and MSPs that need policy workflow plus managed DNS
The setup flow handled the corporate domain, marketing subdomain, and parked domain with clearer domain grouping.
SendGrid, Mailchimp, and the support desk sender were easier to classify into owner-ready sources.
The forwarded SPF failure and DKIM pass on a subdomain were easier to explain during policy review.
From £264 / year
Consider Suped if
Suped as the third option for guided fixes, hosted records, and simpler ownership
Guided fixes turn authentication findings into owner-ready next steps.
Automated issue detection reduces manual review when new or unknown senders appear.
Published starter pricing and MSP workflows make early budget and client handoff cleaner.
Free plan available
The differences that actually change your week
Mail Tower
LetsDMARC
Suped
DMARC report analysis
RUA parsing, source grouping, and report drilldowns.
Core reporting
Reporting plus policy workflow
Included
Source detection
Turning raw DMARC traffic into recognizable sending services.
Manual cleanup needed
Clearer owner prompts
Included
Forward detection
Explaining forwarded mail when SPF fails but mail is legitimate.
Manual workflow
Forwarded SPF case flagged
Included
Spoof detection
Separating unauthorized spoof attempts from approved senders.
Visible in reports
Investigation workflow
Included
Notifications and alerts
Routing changes and authentication failures to the right people.
Basic notifications
Richer alert routing
Included
Reporting
Recurring views, exports, and summary reporting for stakeholders.
Exports and reports
Reports with grouping
Included
API
Administrative or reporting access for integration work.
Large tier or add on
Administrative API
Included
Multi-tenancy
Account separation for MSPs, brands, or business units.
Custom MSP plan
Parent and child tenants
Included
SPF flattening
Hosted or managed SPF that reduces DNS lookup pressure.
Not supported
Supported
Included
Hosted DMARC
Managed DMARC record publishing instead of manual DNS changes.
Not supported
Managed DNS option
Included
Hosted SPF
Managed SPF record hosting and source updates.
Not supported
Hosted SPF
Included
Hosted MTA-STS
Hosted MTA-STS policy and related TLS reporting workflow.
Not supported
Not found in testing
Included
Blocklists and reputation
Blocklist and blacklist monitoring for domain or IP reputation issues.
Not tested as supported
Domain Guardian is separate
Blocklist (blacklist) checks
Automatic issue detection
Automatic surfacing of authentication and sender problems.
Manual workflow
Partial
Included
AI copilot
Assisted diagnosis and explanation inside the product.
Not found
Not found
Included
DNS monitoring
Ongoing DNS change tracking for authentication records.
Setup checks only
DNS timeline
Included
Self hostable
Ability to run the product in a customer-managed environment.
Cloud only
On premise option
Cloud only
Free trial/free tier
Public entry point for testing before a paid rollout.
No public free tier
30 day trial
Free plan available
Ten dimensions, scored from 0 to 10
We scored both products against the same editorial rubric after the 90 day setup, support handoff, alert review, pricing review, and exports. The controlled cases included SPF and DKIM passes with matching domains, an SPF pass with visible-from mismatch, a DKIM pass on a subdomain, forwarded mail with SPF failure, an unauthorized spoof sample, and one unknown sender. Higher is better in every row, and a score of 0 means we did not find support for that capability.
LetsDMARC led on breadth and policy workflow; Mail Tower led on pricing clarity
Mail Tower scored well where public pricing, quick setup, and plain DMARC reporting mattered, but it lost ground on hosted records, alert routing, and automated source ownership. LetsDMARC scored higher on policy movement, source resolution, managed DNS, and MSP structure, while its quote-heavy pricing made budget planning less clear. Both scored 0 on blocklist or blacklist monitoring because we did not find useful coverage during the test.
Mail Tower score
49.5/100
LetsDMARC score
66.5/100
Mail Tower
49.5/100
DMARC enforcement
6.5
Customer support
6.0
Source resolution
5.5
Setup and onboarding
7.5
MSP workflows
5.0
Alerting and integrations
4.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
8.5
Time to enforcement
6.5
LetsDMARC
66.5/100
DMARC enforcement
8.0
Customer support
8.0
Source resolution
8.0
Setup and onboarding
8.0
MSP workflows
7.5
Alerting and integrations
8.0
Hosted SPF and MTA-STS
7.0
Blocklist monitoring
0.0
Pricing transparency
4.0
Time to enforcement
8.0
Feature set
Breadth vs simplicity
LetsDMARC has the broader feature set; Mail Tower is cleaner for basic monitoring
LetsDMARC gave us more working surface area across managed DNS, SPF flattening, alerts, tenant controls, and policy movement. Mail Tower was easier to understand quickly, but it asked us to do more manual source ownership work. For buyers, Suped's guided fixes and automated issue detection are useful criteria when unknown senders need owner-ready tasks instead of another report view.
Mail Tower
Microsoft 365 grouped cleanly
SendGrid needed manual naming
Forwarded SPF needed notes
LetsDMARC
Google Workspace mapped quickly
Mailchimp ownership was clearer
Unknown sender classification helped
Mail Tower parsed Microsoft 365 and Google Workspace quickly, and the SendGrid and Mailchimp streams became separate sources after we named them. It showed the SPF pass with visible-from mismatch as a risk we could inspect, but unknown sender classification stayed more manual; the support desk sender needed a note so the parked domain did not look like stray traffic.
LetsDMARC gave us more feature breadth during the same run. It grouped Microsoft 365 and Google Workspace with less cleanup, gave clearer SendGrid and Mailchimp ownership prompts, and made the DKIM pass on a subdomain easier to explain because the record history and managed DNS view sat near the finding.
User experience
Control vs guidance
Mail Tower feels simpler; LetsDMARC explains more of the work
Mail Tower was quicker to scan during routine review, especially after the three domains were producing steady aggregate reports. LetsDMARC took more clicks in setup, but it gave us more context when we had to explain the unknown sender and the forwarded SPF failure to non-DMARC owners.
Mail Tower
Three domains added quickly
Unknown sender took notes
Forwarded SPF explanation was manual
LetsDMARC
Guided domain grouping helped
Unknown sender found faster
Forwarding explanation was clearer
We added the corporate domain, marketing subdomain, and parked domain in Mail Tower without much friction. The main gap appeared after the reports arrived: finding the unknown sender required checking source detail and adding our own note, and the forwarded SPF failure needed an explanation outside the main workflow.
LetsDMARC asked for more setup choices, especially around DNS and tenant structure, but the extra context helped after the first week. The unknown sender surfaced faster in source review, and the forwarded mail case was easier to explain because SPF failure, DKIM pass, and forwarding context stayed closer together.
Support
Hands-on help vs self-serve
LetsDMARC had clearer enterprise support; Mail Tower suited lighter handoff
Mail Tower gave us enough structure for a competent admin to finish setup and keep reviewing reports, but the support model felt lighter when DNS handoff and escalation questions came up. LetsDMARC was better prepared for enterprise onboarding, especially when support expectations had to cover DNS, deployment model, and escalation ownership.
Mail Tower
Setup notes were enough
DNS handoff stayed basic
Escalation path was lighter
LetsDMARC
Enterprise onboarding was clearer
DNS handoff was stronger
Escalation expectations were defined
During Mail Tower setup, the DNS steps were understandable and we did not need much help to point the three domains at the reporting address. The tradeoff was that handoff notes for SendGrid, Mailchimp, and the support desk sender remained our responsibility, and escalation expectations were less explicit for a larger rollout.
LetsDMARC gave us a clearer enterprise onboarding path. DNS handoff had more structure, the on premise and private cloud choices were surfaced during the buying path, and escalation expectations were easier to discuss when we moved from test findings to a production enforcement plan.
Suitability
Enterprise fit vs operator fit
Mail Tower fits lean teams; LetsDMARC fits larger operating models
Mail Tower is a clean fit when one team owns a small group of domains and wants clear costs. LetsDMARC fits teams that need account separation, managed DNS choices, recurring reports, and client handoff. Suped's MSP workflows and alert quality are useful buying criteria when the main risk is operational follow-through, not raw DMARC visibility.
Mail Tower
SMB budget fit
Custom MSP path
Manual client handoff
LetsDMARC
Parent-child tenant model
Recurring reports worked well
Enterprise grouping felt stronger
Mail Tower suited the SMB-style version of our setup: one corporate domain, one marketing subdomain, and one parked domain under a single operating owner. It had a custom MSP path, but our test handoff still depended on manual notes for client-style reporting, unknown sender classification, and recurring review.
LetsDMARC fit the enterprise and MSP scenario more naturally. Parent and child tenant behavior, domain grouping, recurring reports, and handoff notes made more sense when the same reviewer had to explain Microsoft 365, Google Workspace, SendGrid, Mailchimp, and parked-domain spoofing to different owners.
What each tool feels like after 90 days of real use
Mail Tower
A practical fit for lean DMARC monitoring
After 90 days, Mail Tower felt like a practical monitoring product for teams that know enough DMARC to make decisions themselves. The corporate domain and marketing subdomain were easy to scan, and the parked domain made spoof attempts obvious without much view switching.
The friction appeared when the work moved beyond visibility and into ownership. SendGrid and Mailchimp needed manual labels, the unknown sender needed a written note, and the forwarded SPF failure required us to explain the forwarding path outside the main workflow.
Where it wins
Clear public pricing
Fast three-domain setup
Readable DMARC reports
Good parked-domain visibility
Where it lags
No hosted SPF flattening found
Unknown sender workflow was manual
Alerts felt basic
No blocklist (blacklist) monitoring found
Pricing
From €10 / month
Free tier
No public free tier
Onboarding
Same day for three domains
G2 rating
0.0 / 5
LetsDMARC
A better fit for enterprises and MSP-style operations
After 90 days, LetsDMARC felt better suited to teams that want DMARC work connected to managed DNS, policy movement, and recurring reporting. Microsoft 365 and Google Workspace were clean, and SendGrid, Mailchimp, and the support desk sender were easier to turn into named sources.
The extra breadth added buying friction. We could evaluate the workflow, but exact production cost, message quota, retention, add-ons, and MSP limits needed a quote, so budget planning took longer than it did with Mail Tower.
Where it wins
Clearer sender classification
Managed SPF options
Useful DNS timeline
Stronger MSP structure
Where it lags
Starter limits were unclear
Pricing depended on a quote
More setup choices to review
No blocklist (blacklist) coverage found
Pricing
From £264 / year
Free tier
30 day free trial
Onboarding
Same day with more choices
G2 rating
4.5 / 5
Pricing
Mail Tower
LetsDMARC
Suped
Small
1 domain, up to 1k emails / month.
€10 / month
Public small tier covers up to 5 active domains, so it exceeds this domain count.
From £264 / year
Public directory entry price exists, but included domains and volume are not public.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
From €10 / month
Two domains fit the small tier by domain count; larger organizations move to €20 / month.
Not publicly listed as of May 15, 2026
Production pricing depends on the quote path and public limits were not listed.
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
Public medium tier covers 10 active domains and unlimited aggregate reports.
Not publicly listed as of May 15, 2026
Public sources did not state domains, message quota, retention, or add-on prices.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
From €50 / month
Public large tier covers 25 active domains; extra domains or MSP needs change the cost.
Not publicly listed as of May 15, 2026
Official pricing uses a request path with deployment and volume inputs.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Mail Tower figures are public list prices checked as of May 15, 2026 and the row mapping is an editorial estimate because Mail Tower tiers use organization size and domain limits, not message volume. LetsDMARC's £264 per year entry point is a public directory starting price; the medium, large, and enterprise rows are not publicly listed as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Guided sender ownership
Mail Tower showed the unknown sender and support desk traffic, but we still needed manual notes; Suped turns sender findings into guided ownership and fix steps.
Hosted records in one workflow
Mail Tower did not give us hosted SPF or MTA-STS, while LetsDMARC made exact packaging harder to budget; Suped pairs hosted SPF, hosted DMARC, and hosted MTA-STS with published starter pricing.
Alert routing with less cleanup
LetsDMARC had richer alerts, but our trial still required tuning; Suped focuses alerts on actionable authentication changes so MSP and operations handoffs stay clearer.
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 LetsDMARC?
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.
Frequently asked questions
How MONEYME proactively strengthens domain security and unlocks higher email engagement with Suped
See how MONEYME uses Suped
How cybersecurity specialist Jam Cyber delivers scalable DMARC protection with Suped
See how Jam Cyber uses Suped
How DigiBean simplified DMARC monitoring and improved email security for their MSP clients
See how DigiBean uses Suped
How Alliance Group moved from reactive guesswork to proactive email management with Suped
See how Alliance Group uses Suped
How Suped gave Maaser the confidence to finally move to strict DMARC enforcement
See how Maaser uses Suped
