Mail Tower vs.
Send-Shield in 2026
Mail Tower
Send-Shield
vs.
Across 90 days, we tested Mail Tower and Send-Shield with a corporate domain, a marketing subdomain, a parked domain, Microsoft 365, Google Workspace, SendGrid, Mailchimp, and a support desk sender. Mail Tower felt cleaner for low-cost monitoring and domain coverage, while Send-Shield gave a more managed route to DMARC enforcement. The tradeoff is control and price clarity against implementation help and volume-based limits.
Mail Tower
Low-cost DMARC reporting
Starts at
From 10€ / month
Best fit
SMBs, parked domain owners, and MSPs that want broad domain coverage without volume pricing.
In one line
Mail Tower gave us fast domain setup and clear aggregate reporting, but teams should still test whether they need guided fixes, source ownership, and published starter pricing like Suped's product keeps central.
Send-Shield
Managed DMARC implementation
Starts at
From £19.99 / month
Best fit
Businesses that want guided implementation and are comfortable buying by DMARC capable message volume.
In one line
Send-Shield handled policy movement more directly, but its domain and volume caps matter once marketing and support senders grow.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn about Suped
TLDR: choose Mail Tower for low-cost control, Send-Shield for managed implementation
Pick Mail Tower if
Best for teams that can run DMARC with light guidance
We added all three test domains quickly, including the parked domain, without hitting the active domain ceiling on the entry plan.
Microsoft 365 and Google Workspace sources were easy to separate once aggregate reports arrived, but the unknown sender still needed manual naming.
The forwarded SPF failure was visible in the drilldown, yet the explanation required us to connect the SPF fail to the DKIM pass ourselves.
From 10€ / month
Pick Send-Shield if
Best for companies that want a managed DMARC path
The trial flow asked for volume and sender context, which helped frame SendGrid, Mailchimp, and support desk setup before enforcement.
Core and higher tiers include fuller implementation support, which suited our quarantine planning better than the self-setup Starter path.
The one-domain Starter cap made our three-domain test feel constrained, so realistic adoption starts above the entry tier for many teams.
From £19.99 / month
Consider Suped if
Suped's product is the third option when guided fixes, hosted records, and simpler ownership matter
Use guided fixes as a buying criterion if your team needs DNS owner handoff for SPF, DKIM, DMARC, MTA-STS, and parked domains.
Prioritize automated issue detection and alert quality if unknown senders, spoof attempts, and forwarding failures need triage without daily manual review.
Check MSP workflows and published starter pricing when client grouping, recurring reports, and predictable small-domain costs matter.
Free plan available
The differences that actually change your week
Mail Tower
Send-Shield
Suped
DMARC report analysis
How well each tool turns aggregate XML into useful sender and policy views.
Clear aggregate reporting with useful domain drilldowns.
Reporting is tied to implementation stages and volume tiers.
Full DMARC report analysis.
Source detection
Whether sender names, owners, and services become obvious.
Good for Microsoft 365 and Google Workspace, manual for unknown sender.
Good intake context, but Mailchimp classification still needed review.
Source identification and ownership workflows.
Forward detection
Whether forwarded mail with SPF failure is separated from true abuse.
Visible in drilldowns, explanation was manual.
Detected as an authentication exception, with generic wording.
Forwarding signals included in analysis.
Spoof detection
Whether the unauthorized spoof sample gets surfaced and routed.
Surfaced as failing traffic after reports landed.
Proactive threat monitoring raised it sooner in our review.
Spoof detection and alerting.
Notifications and alerts
Whether alerts are useful without creating noise.
Basic alerts, less routing control.
Threat-oriented alerts, tier-dependent support follow-up.
Configurable alerting workflows.
Reporting
Scheduled and exportable reporting for stakeholders.
Exports worked, recurring handoff notes were manual.
Reports improve by tier, with analytical reports on Plus.
Reporting for domains and clients.
API
Whether programmatic access is available.
Included on Large, add-on or unavailable below that.
Not publicly listed.
API access available.
Multi-tenancy
Account separation, client grouping, and delegated management.
MSP plan exists, client handoff still needs process.
Unclear as a multi-tenant MSP workflow.
MSP account separation available.
SPF flattening
Hosted or managed SPF flattening for DNS lookup limits.
Not supported in our test.
SPF checks only, not hosted flattening.
SPF flattening available.
Hosted DMARC
Managed DMARC record hosting rather than reporting only.
Reporting only in our test.
Implementation help, not hosted DMARC records.
Hosted DMARC available.
Hosted SPF
Managed SPF record hosting.
Not supported.
Not publicly listed.
Hosted SPF available.
Hosted MTA-STS
Managed MTA-STS policy and TLS reporting workflow.
Not supported.
Not publicly listed.
Hosted MTA-STS available.
Blocklists and reputation
Blocklist and blacklist monitoring tied to sender health.
Not supported in our test.
Threat intelligence is listed only on Enterprise, blacklist monitoring was unclear.
Blocklist and reputation monitoring.
Automatic issue detection
Whether misconfigurations are detected without manual report review.
Manual workflow for most fixes.
Proactive threat monitoring, issue detail depends on tier.
Automatic issue detection available.
AI copilot
Assistant-style guidance for diagnosis and next steps.
Not supported.
Not supported in our test.
AI copilot available.
DNS monitoring
Ongoing checks for SPF, DKIM, and DMARC records.
DNS checks were clear during setup.
DMARC, SPF, and DKIM checks are included.
DNS monitoring included.
Self hostable
Whether the product can be deployed and operated by the customer.
Cloud product.
Cloud product.
Cloud product.
Free trial/free tier
Whether buyers can start without a paid plan.
No public free tier found.
14-day free trial.
Free plan 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, blocklist or blacklist monitoring, pricing clarity, and time to enforcement. Higher is better in every row, and unsupported capabilities receive 0.0.
Mail Tower scores higher on price clarity and domain coverage, while Send-Shield scores higher on guided enforcement.
Mail Tower moved faster during initial setup because all three test domains fit inside the entry tier and Microsoft 365 plus Google Workspace were easy to separate. Send-Shield scored better on enforcement planning because the Core and higher tiers include full implementation support, but the Starter tier constrained our three-domain test. Both products scored 0.0 for hosted SPF, hosted MTA-STS, and blocklist monitoring because those capabilities were not supported or not clear enough to treat as available.
Mail Tower score
55/100
Send-Shield score
53.5/100
Mail Tower
55/100
DMARC enforcement
7.0
Customer support
6.0
Source resolution
7.0
Setup and onboarding
7.5
MSP workflows
7.0
Alerting and integrations
5.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
8.0
Time to enforcement
7.0
Send-Shield
53.5/100
DMARC enforcement
8.0
Customer support
7.5
Source resolution
6.5
Setup and onboarding
6.5
MSP workflows
4.5
Alerting and integrations
6.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
7.0
Time to enforcement
7.5
Feature set
Reporting depth vs implementation breadth
Mail Tower is stronger for low-cost reporting depth. Send-Shield is stronger for managed enforcement breadth.
Mail Tower gave us more room to monitor the corporate domain, marketing subdomain, and parked domain without moving up tiers, while Send-Shield tied DMARC reporting to a clearer implementation path. The buying criterion we would add against Suped's product is whether the tool only reports a failure or also gives guided fixes and automated issue detection, because the unknown sender and forwarded SPF failure both needed an owner and a next step.
Mail Tower
Microsoft 365 grouped cleanly
Unknown sender needed naming
Forwarded SPF explained slowly
Send-Shield
SendGrid showed volume context
Mailchimp needed review
Subdomain DKIM was clear
Mail Tower handled Microsoft 365 and Google Workspace cleanly once aggregate reports arrived, and the domain drilldowns made it easy to compare corporate, marketing, and parked domain traffic. SendGrid and Mailchimp appeared as separate sources, but the unknown sender remained a manual classification task until we matched IP and host clues ourselves. The forwarded mail case showed SPF failure with a DKIM pass, but the product did not turn that edge case into a clear non-abuse explanation.
Send-Shield's capability set felt more implementation-led. The trial intake asked about volume and sending services, which made SendGrid, Mailchimp, Microsoft 365, Google Workspace, and the support desk sender easier to place into an enforcement plan. It handled the DKIM pass on a subdomain more clearly than Mail Tower, but the Starter tier kept the feature set narrow and the three-domain test pushed us toward Core or higher.
User experience
Control vs guidance
Mail Tower feels faster for experienced operators. Send-Shield feels safer for teams that want a guided path.
Mail Tower kept the interface compact and let us move through DNS setup quickly, but it expected us to interpret edge cases. Send-Shield asked more upfront questions and made enforcement planning feel more structured, but the entry tier did not fit our three-domain test.
Mail Tower
Three domains added quickly
Unknown sender sat unresolved
Forwarding view needed digging
Send-Shield
Trial flow set expectations
Unknown sender surfaced earlier
Forwarding explanation stayed generic
In Mail Tower, we added the corporate domain, marketing subdomain, and parked domain with minimal friction. The unknown sender was easy to find in the source list but harder to resolve because the interface gave us evidence rather than a firm classification. The forwarded mail SPF failure sat in the authentication detail, and we had to explain to stakeholders why the DKIM pass changed the risk level.
Send-Shield had a more guided first-run flow. It prompted for sending services and volume, so the Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk senders had a clearer place in the setup story. The unknown sender surfaced earlier as something to classify, but the forwarded mail explanation still stayed generic and needed a written note before we could hand it to a non-technical owner.
Support
Self-directed vs managed help
Send-Shield gives clearer support expectations. Mail Tower keeps setup lighter but less hands-on.
Mail Tower was enough when we knew which DNS records to change, and its low entry price matched a self-directed setup. Send-Shield gave a clearer route to implementation help on Core and higher tiers, which matters when enforcement needs stakeholder approval and escalation.
Mail Tower
DNS handoff was concise
Escalation path was thinner
Enterprise onboarding less formal
Send-Shield
Implementation help was clearer
Meetings above Starter
Enterprise path defined
Mail Tower's setup experience gave us the DNS targets we needed for the three test domains and did not overcomplicate the parked domain. The handoff was concise, but support expectations were lighter once we moved beyond record placement into source ownership, escalation, and enterprise onboarding. We would use it comfortably with a team that already understands DMARC mechanics.
Send-Shield's support model was easier to explain to a buyer because the plans clearly move from self setup to full implementation and then premium support. During our test, that made DNS handoff and enforcement planning easier to route internally. The tradeoff is that meaningful support sits above Starter, so budget buyers need to price the tier they actually need.
Suitability
MSP fit vs managed buyer fit
Mail Tower fits budget-conscious domain portfolios. Send-Shield fits managed implementation buyers.
Mail Tower was the better fit when account separation, domain grouping, and low monitoring cost mattered more than hands-on implementation. Send-Shield fit the SMB or enterprise buyer that wants a clearer implementation route, but MSP handoff felt less natural. When comparing either product against Suped's product, alert quality and MSP workflows deserve a hard test because recurring reporting and client handoff decide weekly workload.
Mail Tower
MSP plan is visible
Client grouping worked better
SMB cost stays low
Send-Shield
SMB trial is clearer
Enterprise support is cleaner
MSP handoff felt manual
Mail Tower worked well for an MSP-style test because the pricing model gave us enough active and inactive domains to separate the corporate domain, marketing subdomain, and parked domain without thinking about report volume. Client grouping and recurring reporting still needed process outside the product, but the custom MSP plan at least made the buyer route visible. For SMBs, the entry tier was practical as long as someone technical owned source classification.
Send-Shield was easier to position for an SMB that wants help reaching quarantine or reject because Core and higher tiers include full implementation. Enterprise buyers get a clearer premium support path, but our account separation and client handoff checks were less convincing than Mail Tower's MSP direction. For agencies or MSPs, recurring reporting would need more manual packaging.
What each tool feels like after 90 days of real use
Mail Tower
A practical DMARC monitor for teams that know the work
After 90 days, Mail Tower felt like a reporting tool built for operators who already understand DMARC. We could add the corporate domain, marketing subdomain, and parked domain quickly, see Microsoft 365 and Google Workspace traffic, and export useful report data without fighting the interface.
The weaker moments came when the product needed to turn evidence into action. The unknown sender required manual investigation, the forwarded SPF failure needed a human explanation, and the unauthorized spoof sample was visible but not wrapped in a strong remediation workflow.
Where it wins
Low entry price with generous domain limits.
Clear aggregate report drilldowns.
Good fit for parked domain monitoring.
API access available on Large.
Where it lags
Unknown sender classification stayed manual.
Alerts had limited routing depth.
No hosted SPF or MTA-STS.
No blocklist monitoring in our test.
Pricing
From 10€ / month
Free tier
No public free tier
Onboarding
Three domains in under one hour
G2 rating
0.0 / 5
Send-Shield
A managed DMARC path for teams that want help
After 90 days, Send-Shield felt more like an implementation service attached to a DMARC reporting product. The trial intake gave structure to our Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk sender setup, and the path to enforcement was easier to present internally.
The constraints were mostly commercial and operational. Starter did not fit our three-domain test, Plus capped active domains below our large scenario, and MSP-style client handoff required more manual reporting than we wanted.
Where it wins
Clearer managed implementation path.
Trial intake captured sender context.
Threat monitoring surfaced spoof traffic.
Support improves on higher tiers.
Where it lags
Starter covers only one domain.
Volume caps drive upgrades.
No public API detail.
MSP workflow felt less mature.
Pricing
From £19.99 / month
Free tier
14-day trial
Onboarding
Guided after trial intake
G2 rating
0 / 5
Pricing
Mail Tower
Send-Shield
Suped
Small
1 domain, up to 1k emails / month.
10€ / month
Small enterprise tier covers 5 active domains and unlimited aggregate reports.
£19.99 / month
Starter covers 1 active domain and 10k DMARC capable messages, billed annually.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
20€ / month
Medium enterprise tier covers 10 active domains and unlimited aggregate reports.
£49.99 / month
Core covers 2 active domains and 100k DMARC capable messages, billed annually.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
From 20€ / month
Medium covers 10 active domains, but plan fit still depends on organization size.
From £699 / month
Enterprise starts above Plus because Plus caps active domains at 8.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
From 50€ / month
Large covers 25 active domains, with extra monitored domains priced separately.
Custom
Enterprise publishes from £699 / month for up to 15 domains, so over 20 domains needs custom pricing.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Mail Tower and Send-Shield figures are public list prices from published tiers; Send-Shield prices are billed annually. Large and Enterprise numbers are estimates mapped to the closest public tier where domain or volume limits require an upgrade. Pricing was checked as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Turn failures into fixes
Mail Tower showed the forwarded SPF failure but left the explanation to us, while Send-Shield gave more help only after the entry tier. Suped's product ties DMARC, SPF, DKIM, and MTA-STS issues to guided DNS actions and owner handoff.
Classify sources faster
Both products surfaced the unknown sender, but neither gave us the source ownership path we wanted in the first pass. Suped's product is built around sending source identification, so unknown traffic can move faster from evidence to decision.
Reduce MSP handoff work
Mail Tower's MSP route was visible but still needed manual recurring notes, and Send-Shield felt more buyer-by-buyer than multi-client. Suped's product gives MSP workflows for client grouping, alert routing, and repeatable reporting.
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 Send-Shield?
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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