SimpleDMARC vs.
Postmastery in 2026
SimpleDMARC
Postmastery
vs.
We tested SimpleDMARC and Postmastery for 90 days across a corporate domain, a marketing subdomain, and a parked domain. SimpleDMARC was the clearer fit for teams that want self-serve DMARC monitoring with visible pricing, while Postmastery made more sense when a deliverability operator wants consulting-led interpretation and is comfortable with less public product detail.
SimpleDMARC
Self-serve DMARC reporting
Starts at
Free plan available
Best fit
Small teams that want quick DMARC visibility and public plan limits.
In one line
SimpleDMARC gave us fast domain setup, readable aggregate reports, and enough policy guidance to plan enforcement without a long vendor handoff.
Postmastery
Deliverability-led DMARC operations
Starts at
Not publicly listed
Best fit
Teams that want email deliverability specialists involved in DMARC interpretation.
In one line
Postmastery was stronger when DMARC data needed human deliverability context, but weaker when we needed quick self-serve classification and public pricing.
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 SimpleDMARC for self-serve clarity, Postmastery for operator-led DMARC work
Pick SimpleDMARC if
Best for smaller teams moving domains toward enforcement
Our Microsoft 365 and Google Workspace traffic was grouped quickly enough to separate approved corporate mail from noise.
The SendGrid and Mailchimp senders were easier to explain to a non-specialist owner after the report drilldown showed domain matching status.
The parked domain workflow made the spoof sample visible without forcing us into an enterprise conversation.
Free plan available
Pick Postmastery if
Best for teams that already run deliverability as an operational function
The forwarded SPF failure was easier to reason about when treated as a deliverability case with a failed authentication event.
Support handoff had more room for a custom explanation around the support desk sender and its sending path.
The product felt more natural for teams that already expect expert review before changing policy.
Not publicly listed
Consider Suped if
Third option for guided fixes, hosted records, and simpler ownership
Use guided fixes as a buying criterion when the team needs owner-ready remediation steps instead of raw DMARC evidence.
Prioritize automated issue detection and alert quality when unknown senders, spoof samples, and forwarded failures must be separated quickly.
Check MSP workflows and published starter pricing when client grouping, recurring reports, and budget approval matter before rollout.
Free plan available
The differences that actually change your week
SimpleDMARC
Postmastery
Suped
DMARC report analysis
Aggregate report parsing, source views, and policy evidence.
Supported
Supported
Supported
Source detection
Grouping raw sender data into recognizable services and owners.
Supported
Manual workflow
Supported
Forward detection
Identifying cases where forwarding breaks SPF but DKIM still explains legitimacy.
Partial
Supported
Supported
Spoof detection
Flagging unauthorized mail that fails domain-matched authentication.
Supported
Supported
Supported
Notifications and alerts
Operational alerts for changes, failures, and suspicious senders.
Supported
Partial
Supported
Reporting
Scheduled or exportable reporting for owners and stakeholders.
Supported
Supported
Supported
API
Programmatic access for pulling domain or report data.
Unclear
Unclear
Supported
Multi-tenancy
Separating domains, clients, accounts, or workspaces cleanly.
Team access on paid tier
Manual workflow
Supported
SPF flattening
Flattening or managing SPF to stay within lookup limits.
Enterprise
Not tested
Supported
Hosted DMARC
Hosted record management for policy and reporting changes.
Not tested
Not tested
Supported
Hosted SPF
Managed SPF records or hosted SPF workflows.
Enterprise
Not tested
Supported
Hosted MTA-STS
Hosted MTA-STS policy management and TLS reporting workflow.
Coming soon
Not tested
Supported
Blocklists and reputation
Blocklist or blacklist monitoring and reputation checks tied to sender health.
Not supported
Supported
Supported
Automatic issue detection
Detecting likely root causes and changes without manual report review.
Partial
Manual workflow
Supported
AI copilot
AI-assisted explanation, diagnosis, or remediation guidance.
Not supported
Not supported
Supported
DNS monitoring
Watching authentication records for drift or breakage.
Supported
Partial
Supported
Self hostable
Ability to run the product on your own infrastructure.
No
No
No
Free trial/free tier
A free starting point or free trial before paid rollout.
Free plan available
Not publicly listed
Free plan available
Ten dimensions, scored from 0 to 10
We scored each product against a fixed editorial rubric covering enforcement, setup, source resolution, alerting, account workflows, hosted authentication records, blocklist and blacklist monitoring, pricing clarity, and speed to a defensible enforcement plan. Higher is better in every row.
SimpleDMARC scored higher for self-serve DMARC execution, while Postmastery scored higher where deliverability interpretation mattered.
SimpleDMARC gave us clearer setup, public pricing, and a faster path for turning monitoring data into a policy plan across the three test domains. Postmastery helped more with the forwarded SPF failure and deliverability context, but its weaker public pricing, less obvious self-serve flow, and manual source classification slowed repeatable execution.
SimpleDMARC score
64.5/100
Postmastery score
55/100
SimpleDMARC
64.5/100
DMARC enforcement
8.0
Customer support
7.0
Source resolution
7.5
Setup and onboarding
8.5
MSP workflows
6.0
Alerting and integrations
6.5
Hosted SPF and MTA-STS
4.0
Blocklist monitoring
0.0
Pricing transparency
9.0
Time to enforcement
8.0
Postmastery
55/100
DMARC enforcement
7.0
Customer support
8.0
Source resolution
6.5
Setup and onboarding
6.0
MSP workflows
6.5
Alerting and integrations
5.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
7.0
Pricing transparency
2.0
Time to enforcement
6.5
Feature set
Self-serve depth
SimpleDMARC wins for DMARC reporting depth. Postmastery wins when deliverability context matters more than interface detail.
SimpleDMARC gave us more direct DMARC evidence for the Microsoft 365, Google Workspace, SendGrid, and Mailchimp sources, especially when we needed to explain domain matching state to a domain owner. Postmastery was stronger around reputation interpretation, but the unknown sender took more manual classification. For buyers, guided fixes and automated issue detection should be treated as criteria because they reduce the handwork between finding a bad source and assigning the next action.
SimpleDMARC
M365 source grouping was clear
Mailchimp matching was explainable
Mismatch case stayed visible
Postmastery
Forwarding context was stronger
Spoof case had deliverability context
Unknown sender needed review
SimpleDMARC handled the core reporting cases cleanly. Microsoft 365 and Google Workspace appeared as expected, SendGrid and Mailchimp were separated well enough to map to marketing ownership, and the DKIM pass that matched the marketing subdomain was visible without rewriting the report. The SPF pass with visible from mismatch needed a closer read, but the drilldown made the mismatch explainable.
Postmastery gave us useful deliverability context, especially when the forwarded SPF failure needed explanation and when the unauthorized spoof sample had to be tied back to domain risk. It was less direct for unknown sender classification because the workflow leaned on analyst interpretation. That fit can work well for a mature email program, but it adds friction for teams that want an owner to act from the product screen.
User experience
Control vs guidance
SimpleDMARC is easier to operate solo. Postmastery is better when an expert already owns the workflow.
SimpleDMARC had the cleaner first-week experience because we could add the three domains, confirm DNS, and start reading report data without a heavy handoff. Postmastery felt more dependent on operator interpretation, which helped for nuanced deliverability cases but slowed routine sender triage.
SimpleDMARC
Three domains onboarded cleanly
DNS steps were readable
Unknown sender was traceable
Postmastery
Forwarding case explained better
Setup needed more context
Classification was more manual
SimpleDMARC made onboarding the corporate domain, marketing subdomain, and parked domain straightforward. DNS setup was easy to hand to an administrator because the required records were visible and the verification state was understandable. The unknown sender was not identified perfectly on first pass, but the surrounding source data made it practical to decide whether it was a vendor, forwarder, or risk.
Postmastery was more comfortable when we treated the forwarded SPF failure as a deliverability incident that needed explanation. The interface and handoff flow asked for more context before a final classification, which made sense for complex mail streams but felt slow for the parked domain spoof sample and the unknown sender. We would budget more setup time for teams without a dedicated email operator.
Support
Self-serve help vs specialist help
SimpleDMARC fits clear DNS handoff. Postmastery fits guided escalation.
SimpleDMARC support expectations were easier to map to public plan tiers, which matters when a small team needs predictable help during setup. Postmastery felt more suitable for custom escalation and enterprise onboarding, but the lack of public pricing made the support boundary harder to judge before a sales conversation.
SimpleDMARC
Support tiers were visible
DNS handoff was clear
Ticket evidence was usable
Postmastery
Escalation fit was stronger
Enterprise path felt custom
Scope needed sales context
SimpleDMARC's plan structure made support expectations visible: basic support on the free plan, standard support on Micro, priority support on Small and Medium, and dedicated support on Enterprise. In our setup notes, the DNS handoff for Microsoft 365 and the parked domain was clear enough for an IT administrator to complete without a meeting. The support desk sender still needed owner confirmation, but the product evidence was ready to attach to a ticket.
Postmastery had a stronger fit for escalation where deliverability context mattered, especially when we needed to explain why forwarded mail failed SPF but should not block policy progress if DKIM still matched the domain. Enterprise onboarding appeared more relationship-led, which can be useful for large senders. The tradeoff is that smaller teams get less certainty about support level, scope, and price before engaging.
Suitability
SMB fit vs operator fit
SimpleDMARC fits direct ownership. Postmastery fits teams that already manage deliverability operations.
SimpleDMARC is the cleaner choice when one team owns domains, DNS, and policy movement directly. Postmastery is better when DMARC data will feed a broader deliverability operation with expert review. Buyers with MSP needs should test account separation, recurring reports, handoff notes, and alert quality before committing because those workflows decide whether the platform saves time every month.
SimpleDMARC
Good SMB domain ownership
Exports helped owner handoff
MSP grouping felt basic
Postmastery
Better for operators
Reporting fit service teams
SMB flow felt slower
SimpleDMARC suited the SMB and mid-market shape in our test: one corporate domain, one marketing subdomain, and one parked domain with distinct owners. Account separation was enough for a small internal team, and exports made the SendGrid and Mailchimp findings easy to hand to marketing. For MSP-style work, it was usable, but client grouping and repeatable handoff notes felt less central than core DMARC monitoring.
Postmastery suited teams that already have an operator reviewing domain health, reputation, and deliverability signals across accounts. The workflow made more sense for enterprise or agency-style service delivery where recurring reporting is paired with human interpretation. It was less appealing for an SMB that wants to classify an unknown sender, assign an owner, and move policy without waiting for a service-led review.
What each tool feels like after 90 days of real use
SimpleDMARC
A practical self-serve DMARC console for direct domain owners
After 90 days, SimpleDMARC felt like the product we would put in front of a small IT team that needs to see what is sending mail before it changes policy. The corporate domain and marketing subdomain were easy to separate, and the parked domain made the spoof sample obvious enough to justify a stricter policy path.
The weaker moments came when a case needed interpretation beyond report evidence. The forwarded SPF failure needed explanation, and the unknown sender still required owner research. Even with that, the overall workflow stayed understandable because the report drilldowns, exports, and plan limits were easy to explain.
Where it wins
Fast three-domain onboarding
Readable sender drilldowns
Public pricing and limits
Useful exports for owner review
Where it lags
Forwarding explanation needed manual context
No tested blocklist monitoring
MSP grouping felt limited
Hosted MTA-STS not current
Pricing
Free plan available
Free tier
Yes
Onboarding
Fast
G2 rating
4.0 / 5
Postmastery
A better fit for deliverability teams than pure self-serve DMARC buyers
Postmastery felt strongest when DMARC reporting was part of a wider deliverability workflow. The forwarded SPF failure, support desk sender, and reputation concerns benefited from a human explanation that connected authentication results to sending behavior.
It felt less efficient when we needed repeatable self-serve tasks. The unknown sender took more manual classification, pricing was not public, and account separation needed more discovery before we would rely on it for multiple client or business-unit workflows.
Where it wins
Strong deliverability interpretation
Useful forwarding explanation
Good escalation fit
Reputation context was relevant
Where it lags
Pricing was not public
Source classification was manual
Self-serve setup felt slower
Free tier was not public
Pricing
Not publicly listed
Free tier
Not publicly listed
Onboarding
Moderate
G2 rating
0 / 5
Pricing
SimpleDMARC
Postmastery
Suped
Small
1 domain, up to 1k emails / month.
$0
The free plan covers 1 active domain and up to 10,000 emails per month.
Not publicly listed as of May 15, 2026
No public entry plan was available for this usage level.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
$149 / year
The Small plan maps to 2 active domains and 100,000 emails per month.
Not publicly listed as of May 15, 2026
Pricing requires discovery before budget approval.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
Estimated Enterprise
Public lower tiers do not cover 10 active domains, so Enterprise is the likely fit.
Not publicly listed as of May 15, 2026
No public volume band was available for this segment.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
$14,999 / year
Enterprise lists 100 active domains, 100 passive domains, and 1 million plus emails per month.
Not publicly listed as of May 15, 2026
Enterprise scope and price were not published.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
SimpleDMARC amounts are public list prices from the supplied pricing data, checked as of May 15, 2026. The Large SimpleDMARC cell is estimated because the public lower tiers do not match 10 domains and 1 million emails per month. 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
Faster sender ownership
Our SimpleDMARC test still required manual owner research for the unknown sender. Suped's product focuses on sending source identification and guided fixes so the next owner action is clearer.
Clearer operational alerts
Postmastery gave useful interpretation, but routine triage depended on manual review. Suped's product prioritizes automated issue detection and alert quality for spoof samples, new senders, and authentication drift.
MSP-ready handoff
Both products needed extra checking around repeatable client workflows. Suped's product includes MSP workflows for account separation, recurring reports, and handoff notes when several domains or clients need the same operating rhythm.
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 SimpleDMARC 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.
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