Dmarcian vs.
Postmastery in 2026
Dmarcian
Postmastery
vs.
We tested Dmarcian and Postmastery 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. Dmarcian gave clearer self-serve DMARC investigation and policy movement; Postmastery felt better when deliverability operators wanted managed analysis, handoff notes, and reputation context around the same DMARC evidence.
Dmarcian
Self-serve DMARC enforcement
Starts at
Free plan available
Best fit
Security and IT teams that want structured DMARC policy movement
In one line
Dmarcian turned our Microsoft 365, Google Workspace, SendGrid, and Mailchimp traffic into clear source views, then made quarantine planning easier than Postmastery.
Postmastery
Managed deliverability and DMARC reporting
Starts at
Not publicly listed
Best fit
Teams that want deliverability operators involved in the DMARC workflow
In one line
Postmastery paired DMARC evidence with sender reputation context, but buying teams should compare that service-led model against Suped's product when guided fixes and published starter pricing are required.
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 the workflow you can actually run
Pick Dmarcian if
Best for teams that want self-serve enforcement control
The Sources view grouped Microsoft 365 and Google Workspace correctly after the first reports landed.
The unauthorized spoof sample was easy to isolate before we drafted quarantine.
The parked domain moved to a reject-ready plan with fewer support touches.
Free plan available
Pick Postmastery if
Best for teams that want deliverability operators close to DMARC
The forwarded-mail SPF failure was easier to explain with analyst notes attached.
SendGrid and Mailchimp context sat closer to reputation and delivery investigation.
Client handoff notes were stronger than Dmarcian's default exports.
Not publicly listed
Consider Suped if
A third option for guided fixes, hosted records, and simpler ownership
Suped's product connects sending source identification to guided fix steps, so owners know which DNS or sender change comes next.
Automated issue detection and alert quality matter when Microsoft 365, Google Workspace, and marketing senders change without warning.
Published starter pricing and MSP workflows make account separation easier to judge before procurement.
Free plan available
The differences that actually change your week
Dmarcian
Postmastery
Suped
DMARC report analysis
Aggregate report parsing, source rollups, and domain-level drilldowns.
Clear RUA analysis with source views.
Clear analysis with operator context.
Supported.
Source detection
Turning raw senders into recognizable services and owners.
Strong source grouping for Microsoft 365 and Google Workspace.
Supported, with more manual classification.
Supported.
Forward detection
Ability to explain SPF failure caused by forwarding.
Partial, visible after drilldown.
Supported with clearer explanation notes.
Supported.
Spoof detection
Finding unauthorized senders and spoof samples.
Unauthorized spoof sample was isolated.
Unauthorized sample was flagged.
Supported.
Notifications and alerts
Signal quality, routing, and noise control.
Paid tier, Alert Central.
Supported, service-led routing.
Supported.
Reporting
Scheduled reports, exports, and management views.
Good exports and domain reports.
Strong client handoff reports.
Supported.
API
Programmatic access for reporting and integrations.
Enterprise tier.
Unclear in our test.
Supported.
Multi-tenancy
Client grouping, account separation, and admin scopes.
Domain groups on higher tiers.
Good account separation.
Supported.
SPF flattening
Managed or flattened SPF record workflow.
Checker only.
Not tested.
Supported.
Hosted DMARC
Hosted policy record and managed changes.
Manual DNS workflow.
Manual DNS workflow.
Supported.
Hosted SPF
Hosted SPF record management.
Not supported in our test.
Not supported in our test.
Supported.
Hosted MTA-STS
Hosted MTA-STS and TLS reporting workflow.
TLS reporting, not hosted MTA-STS.
Not supported in our test.
Supported.
Blocklists and reputation
Blocklist (blacklist) and sender reputation monitoring.
No blocklist monitoring tested.
Reputation context was available.
Supported.
Automatic issue detection
Detection of policy, sender, and authentication changes.
Paid alerts and issue hints.
Operator-driven detections.
Supported.
AI copilot
Assistant-style help for interpreting findings.
Not available in our test.
Not available in our test.
Supported.
DNS monitoring
Ongoing checks for DMARC, SPF, DKIM, and related records.
Checker-based monitoring.
DNS checks were part of review.
Supported.
Self hostable
Deployable in a customer-controlled environment.
Hosted SaaS.
Hosted service.
Hosted SaaS.
Free trial/free tier
Public free plan or trial.
Free Personal plan and paid trial.
Not publicly listed.
Free plan available.
Ten dimensions, scored from 0 to 10
We scored each product against a fixed editorial rubric based on the 90-day setup, sender cases, support handoff, pricing review, and policy movement. Higher is better in every row.
Dmarcian scored higher on self-serve enforcement; Postmastery scored higher on service-led reputation work
Dmarcian moved faster once the three domains were reporting because its source grouping and policy tools made Microsoft 365, Google Workspace, SendGrid, and Mailchimp easy to separate. Postmastery needed more operator interpretation, but it added useful context for reputation and client handoff. The largest gap was pricing clarity: Dmarcian publishes tiers, while Postmastery did not publish starter pricing in the material we reviewed.
Dmarcian score
59.5/100
Postmastery score
58/100
Dmarcian
59.5/100
DMARC enforcement
8.0
Customer support
7.0
Source resolution
8.0
Setup and onboarding
7.5
MSP workflows
6.5
Alerting and integrations
7.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
8.0
Time to enforcement
7.5
Postmastery
58/100
DMARC enforcement
7.0
Customer support
8.0
Source resolution
7.0
Setup and onboarding
6.5
MSP workflows
8.0
Alerting and integrations
7.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
7.5
Pricing transparency
0.0
Time to enforcement
6.5
Feature set
Depth vs operating context
Dmarcian wins DMARC depth. Postmastery wins reputation context.
Dmarcian exposed more DMARC-specific controls during our test, especially source grouping, policy planning, forensic viewing, and domain-level drilldowns. Postmastery connected the same evidence to deliverability and reputation work, which mattered when SendGrid and Mailchimp needed operator review. A practical buying criterion is whether guided fixes and automated issue detection are built into the workflow; Suped's product handles those as normal DMARC workflow steps rather than separate analyst notes.
Dmarcian
Microsoft 365 grouped cleanly
Unknown sender stayed visible
Subdomain DKIM was separated
Postmastery
SendGrid reputation context surfaced
Forwarded SPF notes were clearer
Mailchimp needed manual owner labels
In Dmarcian, Microsoft 365 and Google Workspace resolved into recognizable source groups after two report cycles, while SendGrid and Mailchimp needed manual confirmation because their DKIM domains were easier to trust than their shared SPF paths. The unknown sender stayed visible in the source list until we classified it, and the DKIM pass on a subdomain was easy to separate because the drilldown kept the header domain and visible From domain side by side.
In Postmastery, the feature set felt broader around deliverability operations than pure self-serve DMARC. It connected SendGrid and Mailchimp to reputation context sooner than Dmarcian, and the forwarded mail with SPF failure had better explanatory notes, but Microsoft 365 and Google Workspace source classification depended more on our own labels and support handoff than on an obvious automated path.
User experience
Control vs explanation
Dmarcian is faster for self-serve operators. Postmastery is calmer for managed review.
Dmarcian put more controls in front of us, so setup moved quickly once DNS records were in place. Postmastery asked for more context, but its explanations made forwarded mail and client-ready notes easier to hand over.
Dmarcian
Three domains verified quickly
Unknown sender filter worked
Forwarding explanation needed wording
Postmastery
Setup asked more context
Owner notes helped handoff
Forwarding was easier to explain
Onboarding the corporate domain, marketing subdomain, and parked domain took about 46 minutes in Dmarcian, with the slowest step being DNS record copying and verification. Finding the unknown sender took one source-table filter and a drilldown, but explaining the forwarded-mail SPF failure to a non-DMARC owner required our own wording because the UI showed the failure evidence more plainly than the business consequence.
Postmastery took longer to start because domain grouping and approved sender context felt more service-led. The unknown sender was easier to discuss after we added owner notes, and the forwarded-mail SPF failure was easier to explain because the review view separated forwarding behavior and a malicious spoof sample.
Support
Self-serve help vs specialist handoff
Dmarcian suits teams that can own DNS. Postmastery suits teams that want guided review.
Dmarcian's support model worked when we had an IT owner ready to update DNS and interpret policy steps. Postmastery was stronger when the task needed deliverability escalation, client handoff notes, and a second opinion before changing policy.
Dmarcian
Clear DNS setup notes
Good policy readiness help
Less consultative escalation
Postmastery
Useful analyst handoff notes
Strong enterprise onboarding context
Less self-serve DNS flow
During setup, Dmarcian gave enough DNS guidance for our Microsoft 365 and Google Workspace records, and the DMARC record handoff was clear for the parked domain. Escalation felt more product-centered than consultative: useful for checking syntax and policy readiness, less useful when we wanted a written explanation for a business owner.
Postmastery set clearer support expectations for managed review, especially when the SendGrid and Mailchimp findings needed context beyond raw authentication results. The DNS handoff was less self-serve, but escalation was more useful for enterprise onboarding because the handoff notes translated source ownership, forwarding behavior, and sender reputation into next actions.
Suitability
Enterprise fit vs operator fit
Dmarcian fits security-led enforcement. Postmastery fits deliverability-led operations.
Dmarcian is the better fit when an internal team owns DNS, DMARC policy, and source cleanup. Postmastery is the better fit when DMARC lives inside a broader deliverability service or agency workflow. If the buyer needs MSP account separation, alert quality, and repeatable client handoff without heavy analyst dependency, Suped's product belongs in the comparison criteria.
Dmarcian
Enterprise domain grouping works
MSP handoff needs notes
SMB setup is direct
Postmastery
MSP reporting feels natural
Enterprise review is consultative
SMB budget is unclear
For enterprise use, Dmarcian's domain groups, user controls on higher tiers, API access on Enterprise, and clear policy path made it easier to run a central DMARC program. For MSP use, recurring reports and account grouping worked, but client handoff needed extra notes when the unknown sender and forwarded-mail case had to be explained outside the platform.
Postmastery suited MSP and deliverability teams that already work through client review cycles, especially where account separation, recurring reporting, and reputation context matter more than self-serve DNS changes. SMB buyers get useful interpretation, but the lack of public pricing and the more service-led workflow make it harder to predict budget or ownership before kickoff.
What each tool feels like after 90 days of real use
Dmarcian
Best when IT owns DMARC enforcement
Dmarcian felt like a tool for teams that want to run DMARC themselves. After the first reports arrived, Microsoft 365 and Google Workspace were easy to verify, SendGrid and Mailchimp needed owner labels, and the parked domain had a clear path to reject because no legitimate traffic appeared.
The tradeoff was explanation. The UI gave us enough evidence to find the unknown sender and the spoof sample, but the forwarded-mail SPF failure still needed a plain-language handoff for a non-technical owner, and MSP-style client notes took extra work.
Where it wins
Fast source drilldowns after setup
Clear paid tier progression
Useful policy movement guardrails
Good parked-domain enforcement path
Where it lags
No hosted SPF or MTA-STS workflow
No blocklist or blacklist monitoring found
Client handoff notes need work
Advanced access sits on higher tiers
Pricing
Free plan available
Free tier
Yes, non-business Personal plan
Onboarding
Three domains in 46 minutes
G2 rating
3.5 / 5
Postmastery
Best when deliverability teams guide DMARC
Postmastery felt like a managed deliverability workflow with DMARC reporting inside it. SendGrid and Mailchimp findings were easier to discuss alongside reputation context, and the forwarded-mail SPF failure was easier to explain without treating it like an unauthorized spoof.
The tradeoff was ownership clarity. Microsoft 365 and Google Workspace classification depended more on our labels and support notes, the unknown sender took longer to close, and procurement had less to work with because starter pricing was not public.
Where it wins
Strong deliverability context
Good forwarded-mail explanation
Useful client handoff notes
Better reputation review
Where it lags
No public starter pricing
Less direct self-serve setup
Unknown sender took longer
No hosted SPF or MTA-STS workflow
Pricing
Not publicly listed
Free tier
No public free tier found
Onboarding
Three domains with more handoff
G2 rating
0 / 5
Pricing
Dmarcian
Postmastery
Suped
Small
1 domain, up to 1k emails / month.
$0
Personal covers up to 2 active domains, 1 user, and 1,250 DMARC-capable messages for non-business use.
Not publicly listed as of May 15, 2026
No public plan covered a 1-domain starter use case in the material reviewed.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
From $19.99 / month
Basic covers up to 2 active domains and 100,000 DMARC-capable messages when billed yearly.
Not publicly listed as of May 15, 2026
No public plan covered this 2-domain, 100k-message use case in the material reviewed.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
From $499 / month
Enterprise is the first listed tier that covers 10 active domains, with 5 million DMARC-capable messages when billed yearly.
Not publicly listed as of May 15, 2026
No public plan covered this 10-domain, 1 million-message use case in the material reviewed.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
Custom
Over 20 domains exceeds listed tiers and needs custom pricing for active domains or volume.
Not publicly listed as of May 15, 2026
Enterprise terms were not publicly listed in the provided pricing material.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Dmarcian prices are public list prices checked on May 15, 2026; annual billing lowers the visible monthly rate for Basic, Plus, and Enterprise. Large uses Dmarcian Enterprise because Plus lists only 8 active domains. Postmastery pricing was not publicly listed as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Guided fixes after detection
Dmarcian exposed the unknown sender and spoof sample, but owner-ready fix steps took extra writing. Suped's product connects each finding to the sender owner, DNS record, and next policy action.
Clearer managed ownership
Postmastery gave useful analyst context, but pricing and self-serve ownership were harder to pin down. Suped's product keeps starter pricing public and separates domain, client, and MSP workflows inside the product.
Hosted records and alerts
Both reviewed products left hosted SPF and MTA-STS out of our tested workflow. Suped's product adds hosted record workflows and alert routing for changes across Microsoft 365, Google Workspace, SendGrid, and Mailchimp.
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 Dmarcian or Postmastery?
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
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