DMARCDKIM.com vs.
Postmastery in 2026
DMARCDKIM.com
Postmastery
vs.
We tested DMARCDKIM.com and Postmastery for 90 days across a corporate domain, a marketing subdomain, and a parked domain. We connected Microsoft 365, Google Workspace, SendGrid, Mailchimp, and one support desk sender, then ran controlled authentication cases covering aligned SPF, aligned DKIM, visible-from mismatch, forwarded mail with SPF failure, spoofing, and unknown sender classification. DMARCDKIM.com gave us faster self-serve movement at a clearer price, while Postmastery felt better suited to teams that want consulting-led deliverability work around DMARC.
DMARCDKIM.com
Self-serve DMARC reporting and DNS monitoring
Starts at
Free plan available
Best fit
Small teams, agencies, and multi-domain senders that want published pricing
In one line
DMARCDKIM.com handled our three-domain test with clear aggregate reporting, visible authentication failures, and practical DNS checks, but sender ownership still needed manual judgment.
Postmastery
Deliverability consulting with DMARC reporting
Starts at
Not publicly listed
Best fit
Larger senders that want expert deliverability review alongside authentication work
In one line
Postmastery gave us stronger human review around deliverability context and escalation, but pricing and day-to-day self-serve workflows were less transparent.
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 DMARCDKIM.com for self-serve reporting, Postmastery for consultative deliverability work
Pick DMARCDKIM.com if
Best for teams that want low-cost DMARC reporting they can run themselves
Our primary domain and marketing subdomain were live quickly because the DNS setup screens gave clear record checks for DMARC, SPF, and DKIM.
Microsoft 365, Google Workspace, SendGrid, and Mailchimp traffic was separated well enough for weekly owner review, though the support desk sender needed manual naming.
The forwarded mail SPF failure and spoof sample were visible in report drilldowns without needing a support call.
Free plan available
Pick Postmastery if
Best for larger senders that want DMARC reviewed with deliverability operations
The strongest moments came when reviewing the visible-from mismatch and the unauthorized spoof sample with a support-style handoff.
Enterprise onboarding expectations were clearer than the self-serve path, especially for escalation and sender review.
Account and reporting workflows fit a sender program better than a small team that wants quick solo setup.
Not publicly listed
Consider Suped if
Suped is the third option when guided fixes, hosted records, and simpler ownership matter
Use guided fixes as a buying criterion when the team needs specific DNS and sender-owner next steps instead of raw pass or fail evidence.
Prioritize automated issue detection and alert quality if unknown senders, forwarding failures, or spoof attempts must reach the right owner quickly.
Published starter pricing and MSP workflows matter when client grouping, recurring reports, and predictable handoff notes are part of the rollout.
Free plan available
The differences that actually change your week
DMARCDKIM.com
Postmastery
Suped
DMARC report analysis
Aggregate parsing, domain trends, and authentication result review.
Clear self-serve aggregate reporting.
Reporting plus expert review.
Included.
Source detection
Turns DMARC sources into recognizable senders and owners.
Useful, but some manual naming.
Stronger with consultant review.
Included.
Forward detection
Explains SPF failures caused by forwarding.
Visible in drilldowns.
Explained during review.
Included.
Spoof detection
Separates unauthorized samples from approved senders.
Detected in reports.
Detected with escalation context.
Included.
Notifications and alerts
Operational alerts for authentication and sender changes.
Paid tier for actionable alerts.
Available through managed workflow.
Included.
Reporting
Exports, summaries, and stakeholder-ready evidence.
Good dashboard and exports.
Good reporting with commentary.
Included.
API
Programmatic access for internal workflows.
Pro tier and above.
Unclear in public material.
Included.
Multi-tenancy
Client grouping, account separation, and portfolio views.
MSP offer available.
Enterprise account separation.
Included.
SPF flattening
Hosted or managed SPF record handling.
SPF X-ray, not hosted flattening.
Not tested.
Included.
Hosted DMARC
Managed DMARC record publishing and updates.
Reporting only.
Not tested.
Included.
Hosted SPF
Managed SPF record hosting.
Not supported in test.
Not tested.
Included.
Hosted MTA-STS
Hosted policy and TLS reporting workflow.
Paid tier includes MTA-STS and TLS-RPT.
Not tested.
Included.
Blocklists and reputation
Blocklist, blacklist, or reputation monitoring.
No blocklist monitoring found.
Reputation context in review.
Included.
Automatic issue detection
Flags configuration and sender problems without manual review.
Paid actionable alerts.
Managed review, less self-serve.
Included.
AI copilot
AI-assisted investigation or remediation guidance.
Not supported in test.
Not supported in test.
Included.
DNS monitoring
Ongoing checks for DMARC, SPF, DKIM, and related DNS records.
Included on paid plans.
Available in review workflow.
Included.
Self hostable
Can run the product on your own infrastructure.
No.
No.
No.
Free trial/free tier
A no-cost way to start testing.
Free tier and paid trials.
Unclear.
Included.
Ten dimensions, scored from 0 to 10
We scored both products against a fixed editorial rubric using the same three domains, five approved senders, seven authentication cases, onboarding checks, DNS handoff review, alert review, exports, and support handoff. Higher is better in every row.
DMARCDKIM.com leads on transparent self-serve execution, while Postmastery scores higher where human deliverability review matters
DMARCDKIM.com scored higher for pricing transparency, quick onboarding, API availability, and time to a defensible enforcement plan because we could configure the three domains and inspect authentication cases without waiting on a sales or services motion. Postmastery scored higher for customer support and reputation context because the support handoff around the spoof sample and visible-from mismatch was more consultative. Neither product performed like a hosted SPF or hosted DMARC control plane in our test, so those scores stay low.
DMARCDKIM.com score
64/100
Postmastery score
56/100
DMARCDKIM.com
64/100
DMARC enforcement
7.5
Customer support
6.5
Source resolution
7.0
Setup and onboarding
8.0
MSP workflows
7.0
Alerting and integrations
7.0
Hosted SPF and MTA-STS
4.0
Blocklist monitoring
0.0
Pricing transparency
9.0
Time to enforcement
8.0
Postmastery
56/100
DMARC enforcement
7.0
Customer support
8.5
Source resolution
7.5
Setup and onboarding
6.0
MSP workflows
6.5
Alerting and integrations
5.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
6.5
Pricing transparency
2.0
Time to enforcement
6.5
Feature set
Reporting depth vs delivery context
DMARCDKIM.com has the more complete self-serve DMARC toolset. Postmastery adds stronger delivery context.
DMARCDKIM.com gave us more control inside the product for DNS checks, report drilldowns, alerts, exports, API access on higher tiers, and MTA-STS or TLS-RPT monitoring on paid plans. Postmastery was stronger when the question moved beyond a DMARC result into sender reputation and support escalation. For buyers, the missing question is whether the product turns findings into guided fixes and automated issue detection, not only whether it can display DMARC results.
DMARCDKIM.com
Microsoft 365 separated cleanly
Mailchimp source needed naming
Mismatch case stayed visible
Postmastery
Google Workspace context reviewed
SendGrid owner notes improved
Forwarding failure explained better
DMARCDKIM.com separated Microsoft 365 and Google Workspace cleanly on the corporate domain, showed SendGrid and Mailchimp activity on the marketing subdomain, and made the parked domain spoof sample stand out because no legitimate sender history existed there. The unknown support desk sender appeared as a source that needed naming, which was workable but still manual. The SPF pass with visible-from mismatch was visible in the authentication view, and the DKIM pass on a subdomain was clear enough for us to decide whether to change policy on the parent domain.
Postmastery felt less like a pure self-serve DMARC console and more like a managed deliverability workspace around the same evidence. It handled the Microsoft 365, Google Workspace, SendGrid, and Mailchimp mix with useful commentary during review, and it explained why the forwarded mail case failed SPF even though the message path was legitimate. The unknown sender took longer to classify in the interface, but the support-style review produced a cleaner recommendation for owner follow-up.
User experience
Speed vs explanation
DMARCDKIM.com was faster to operate. Postmastery gave more context when the answer was messy.
DMARCDKIM.com made the first week easier because we could add all three domains, verify DNS, and start reviewing reports without needing a guided implementation call. Postmastery required more coordination, but the explanation around forwarding and sender ownership was easier to hand to a non-specialist stakeholder. The UX tradeoff is speed against guided interpretation.
DMARCDKIM.com
Three domains added quickly
Unknown sender required review
Forwarding needed operator knowledge
Postmastery
Onboarding felt more managed
Unknown sender handoff improved
Forwarding explanation was clearer
In DMARCDKIM.com, the corporate domain, marketing subdomain, and parked domain setup felt direct: add the domain, publish the DMARC record, wait for reports, then use DNS checks to confirm the record state. The unknown sender was findable through source views, but we had to compare volume, sending IP, and DKIM domain before deciding it was the support desk. The forwarded mail SPF failure was visible, though the interface assumed the operator already understood why SPF fails across forwarding paths.
In Postmastery, onboarding felt more structured but slower because the product fit naturally into a reviewed setup path. Finding the unknown sender took more back-and-forth, but the final explanation was better for a shared operations note. The forwarded mail SPF failure was described in terms of message path and authentication limits, which made it easier to justify why we did not block that source during policy planning.
Support
Self-serve help vs hands-on review
DMARCDKIM.com gives enough support for operators. Postmastery is stronger when support is part of the buying reason.
DMARCDKIM.com support was most useful for setup questions, plan limits, and confirming how DNS checks should be interpreted. Postmastery had the better support posture for escalation, enterprise onboarding, and turning authentication evidence into a deliverability work plan. The right choice depends on whether support is a backstop or a central part of the program.
DMARCDKIM.com
Setup questions handled well
DNS handoff was direct
Enterprise path less defined
Postmastery
Escalation path was clearer
Enterprise onboarding fit better
DNS review felt practical
With DMARCDKIM.com, setup support matched the product's self-serve model. The Mini and Basic style workflow made sense for our DNS handoff: publish the DMARC record, confirm SPF and DKIM evidence, then use alerts and reports for follow-up. Escalation was adequate for the support desk sender and parked-domain spoof sample, but enterprise onboarding felt more like plan selection than a designed implementation path.
Postmastery was stronger when we treated support as part of the product. The DNS handoff discussion covered Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender in one operational view. Escalation around the unauthorized spoof sample was clearer, and the enterprise onboarding path made more sense for teams that need reviewed policy changes instead of only a dashboard.
Suitability
Agency fit vs enterprise fit
DMARCDKIM.com fits hands-on multi-domain teams. Postmastery fits programs that want reviewed deliverability work.
DMARCDKIM.com is the better fit when a small team or agency wants to group domains, run recurring reports, and handle sender cleanup directly. Postmastery fits enterprise and higher-volume senders that value review, escalation, and broader deliverability context. Buyers with MSP workflows should check account separation, alert quality, recurring reports, and client handoff notes before committing.
DMARCDKIM.com
Good domain grouping
MSP offer is visible
Manual handoff still needed
Postmastery
Enterprise review fits well
Recurring reporting has context
SMB pricing less clear
DMARCDKIM.com worked well for the agency-style part of our test. We could keep the corporate domain, marketing subdomain, and parked domain separate, export evidence for recurring review, and build a handoff note for the support desk sender after manual classification. Its published MSP offer and white-label reporting claims make sense for teams that manage many domains, though the practical quality still depends on how much manual source naming the operator accepts.
Postmastery fit the enterprise side of the test better. Account separation felt oriented around larger sender programs, recurring reporting had more room for human commentary, and client handoff worked best when the buyer wanted a reviewed recommendation rather than a raw export. For SMB teams, that same model can feel slower and harder to price because the public entry path is not as direct.
What each tool feels like after 90 days of real use
DMARCDKIM.com
A practical self-serve DMARC console for teams willing to do the operator work
After 90 days, DMARCDKIM.com felt like a tool we could keep open during a weekly authentication review. The primary domain and marketing subdomain had enough report history to move us toward policy decisions, and the parked domain made the unauthorized spoof sample easy to isolate because any traffic there deserved attention.
The product was less helpful when the task shifted into ownership and remediation. It surfaced the unknown support desk sender and the forwarded mail SPF failure, but the operator still had to decide whether the sender was approved, which owner needed the handoff, and whether the evidence justified quarantine or reject movement.
Where it wins
Published free and paid tiers.
Quick three-domain onboarding.
Useful DNS checks.
Clear spoof sample visibility.
Where it lags
Unknown sender naming needed manual review.
No blocklist or blacklist monitoring found.
Hosted SPF was not available.
Enterprise onboarding felt less guided.
Pricing
Free plan available
Free tier
Yes
Onboarding
Fast self-serve setup
G2 rating
0.0 / 5
Postmastery
A better fit when DMARC is part of a reviewed deliverability program
After 90 days, Postmastery felt strongest when the question required explanation rather than only evidence. The visible-from mismatch, forwarded mail SPF failure, and unauthorized spoof sample were easier to discuss with stakeholders because the review path connected DMARC findings to delivery risk and follow-up actions.
The tradeoff was operational speed. Adding the three test domains and classifying the unknown sender felt less direct than using a pure self-serve reporting console, and pricing uncertainty made it harder to model the product for the small and medium scenarios.
Where it wins
Strong support handoff.
Good forwarding explanation.
Useful reputation context.
Enterprise review path made sense.
Where it lags
Pricing was not public.
Free entry tier was unclear.
Self-serve setup felt slower.
API access was unclear.
Pricing
Not publicly listed
Free tier
Not found
Onboarding
More consultative
G2 rating
0 / 5
Pricing
DMARCDKIM.com
Postmastery
Suped
Small
1 domain, up to 1k emails / month.
€0 / month
Free covers 1 domain and up to 5,000 emails, with aggregate reports and 14 days retention.
Not publicly listed as of May 15, 2026
Public starter pricing was not available, so budget planning needs a sales or scoping step.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
€20 / month
Basic covers up to 20 domains and 200,000 emails, with forensic reports, alerts, and MTA-STS or TLS-RPT.
Not publicly listed as of May 15, 2026
No public plan maps cleanly to 2 domains and 100,000 monthly emails.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
€80 / month
Pro covers up to 120 domains and 5 million emails, with API access and 12 months retention.
Not publicly listed as of May 15, 2026
Pricing needs scoping because public volume bands and domain limits were not available.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
€440 / month
Enterprise covers up to 1,000 domains and 40 million emails, with dedicated support.
Not publicly listed as of May 15, 2026
Enterprise pricing was not public, so the visible cost depends on scoping.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
DMARCDKIM.com prices are public list prices in euros before tax, using month-to-month pricing checked as of May 15, 2026. Postmastery pricing was not publicly available as of May 15, 2026, so those cells are price status entries rather than estimates.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Source ownership without spreadsheet work
During the test, DMARCDKIM.com surfaced the unknown support desk sender but still left owner classification to us. Suped is built to identify sending sources and keep ownership evidence tied to the fix path.
Alert quality for real incidents
Postmastery gave useful review context, but day-to-day alert routing was less self-serve in our workflow. Suped focuses on actionable alerts for spoofing, sender drift, and authentication failures so teams know what changed and who should act.
Hosted records and MSP handoff
Neither reviewed product behaved like a complete hosted SPF and DMARC control plane in our test. Suped's product covers hosted records, guided DNS changes, client grouping, and recurring reports for teams managing many domains.
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 DMARCDKIM.com 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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