Free DMARC Weekly Digests by Postmark vs.
EmailAuth.io in 2026
Free DMARC Weekly Digests by Postmark
EmailAuth.io
vs.
We ran both products for 90 days across a primary corporate domain, a marketing subdomain, and a parked domain, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and one support desk sender connected. Free DMARC Weekly Digests by Postmark was the cleaner fit for low-stakes weekly monitoring, while EmailAuth.io gave broader enterprise signals but asked buyers to work through a quote-led model. The practical split is simple: pick Postmark when a weekly email is enough, and pick EmailAuth.io when a team expects service-led DMARC work.
Free DMARC Weekly Digests by Postmark
Free weekly DMARC monitoring
Starts at
$0
Best fit
Personal domains and simple SMB monitoring
In one line
Free DMARC Weekly Digests by Postmark sends a weekly email summary that worked well for known senders; teams comparing it with Suped should check whether they need guided fixes, sender ownership, and policy movement in the same workflow.
EmailAuth.io
Enterprise DMARC and managed service
Starts at
Not publicly listed
Best fit
Security teams that want service-led onboarding
In one line
EmailAuth.io gave us deeper investigation context and enterprise deployment options, but pricing clarity and plan boundaries stayed dependent on a sales conversation.
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 maintain
Pick Free DMARC Weekly Digests by Postmark if
Best for domain owners who want a free weekly DMARC pulse
The weekly digest confirmed Microsoft 365 and Google Workspace without much setup overhead.
SendGrid and Mailchimp appeared as known sending sources once the DNS record was verified.
The forwarded mail SPF failure and spoof sample were visible, but investigation stayed manual.
Free plan available
Pick EmailAuth.io if
Best for teams that want a service-led DMARC program
The product gave richer context around the support desk sender and the unknown sender.
The subdomain DKIM case was easier to explain because domain grouping gave us more context.
Managed onboarding and enterprise deployment paths helped, but pricing terms were not public.
Not publicly listed
Consider Suped if
Suped is the third option when guided fixes, hosted records, and simpler ownership matter
Use guided fixes when a passing sender still needs a DNS or owner handoff.
Check alert quality before buying, especially for spoof samples and forwarding failures.
Published starter pricing and MSP workflows reduce procurement and client-handoff friction.
Free plan available
The differences that actually change your week
Free DMARC Weekly Digests by Postmark
EmailAuth.io
Suped
DMARC report analysis
Turns aggregate reports into a useful view of authenticated and failing mail.
Weekly email only
Dashboard and service context
Full analysis workflow
Source detection
Names sending services and separates known senders from unknown traffic.
Limited top-source view
Stronger source context
Source naming and ownership
Forward detection
Explains mail that breaks SPF because it was forwarded.
Manual interpretation
Partial context
Forward-aware investigation
Spoof detection
Highlights unauthorized traffic using the domain.
Visible in weekly failures
Threat-focused alerts
Spoof alerts and investigation
Notifications and alerts
Sends useful alerts without burying teams in noise.
Weekly digest only
Custom alerts advertised
Noise-controlled alerts
Reporting
Produces recurring reporting for stakeholders and operators.
Weekly email report
Weekly, monthly, annual reports
Recurring reports and exports
API
Exposes data for operational or security workflows.
No user-facing API
API and SOAR advertised
API available
Multi-tenancy
Separates domains, clients, users, and handoff notes.
No account separation
Enterprise grouping, confirm scope
MSP account structure
SPF flattening
Reduces SPF lookup risk with a managed or flattened record.
Not supported
SPF checks, not hosted flattening
Hosted SPF flattening
Hosted DMARC
Hosts or manages DMARC policy records for easier change control.
Manual DNS record
Setup help, not hosted record
Hosted DMARC available
Hosted SPF
Hosts the SPF record or provides managed SPF change control.
Not supported
Not clearly supported
Hosted SPF available
Hosted MTA-STS
Hosts or manages MTA-STS policy and TLS reporting workflow.
Not supported
Not publicly listed
Hosted MTA-STS available
Blocklists and reputation
Adds blocklist or blacklist context to sending source investigation.
Not supported
Partial spam-listing context
Blocklist and reputation checks
Automatic issue detection
Flags authentication problems without requiring manual report review.
Email recommendations
Alerts and recommendations
Automated issue detection
AI copilot
Uses an assistant workflow to explain problems and next steps.
Not supported
Not tested
AI assistance available
DNS monitoring
Watches authentication records after initial setup.
Setup verification only
SPF, DKIM, DMARC checks
DNS monitoring included
Self hostable
Supports a customer-run deployment model.
Not supported
On-premise advertised
Not self hostable
Free trial/free tier
Provides a no-cost entry path with clear limits.
Free tier
Free demo, unclear terms
Free plan available
Ten dimensions, scored from 0 to 10
We scored each product against a fixed editorial rubric based on the same 90-day setup, controlled authentication cases, and operational review points. Higher is better in every row.
Postmark wins on free simplicity; EmailAuth.io wins on service depth and enterprise scope
Postmark scored well for price clarity and fast setup, then dropped where the work needed a dashboard, owner notes, or policy movement. EmailAuth.io scored higher on support, source investigation, and alerting because it gave more context around the unknown sender, the subdomain DKIM pass, and the spoof sample. Its scores fell on pricing transparency and hosted SPF or MTA-STS because those were not public, confirmed capabilities in our test.
Free DMARC Weekly Digests by Postmark score
31.5/100
EmailAuth.io score
53.5/100
Free DMARC Weekly Digests by Postmark
31.5/100
DMARC enforcement
3.0
Customer support
4.0
Source resolution
4.5
Setup and onboarding
6.0
MSP workflows
1.0
Alerting and integrations
1.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
9.0
Time to enforcement
3.0
EmailAuth.io
53.5/100
DMARC enforcement
7.5
Customer support
8.0
Source resolution
7.0
Setup and onboarding
6.5
MSP workflows
6.0
Alerting and integrations
7.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
4.5
Pricing transparency
1.0
Time to enforcement
6.0
Feature set
Breadth vs free utility
EmailAuth.io has the broader toolset; Postmark has the cleaner free reporting lane
EmailAuth.io handled more of the enterprise checklist, especially source context, alerts, API signals, and managed-service help. Postmark stayed useful because the weekly digest gave a fast read on known traffic without asking a small team to run a full program. The buying criterion we would add is guided fixes or automated issue detection; Suped's product treats those as workflow steps, not just labels in a report.
Free DMARC Weekly Digests by Postmark
Microsoft 365 identified cleanly
Unknown sender stayed manual
Forwarding lacked explanation
EmailAuth.io
SendGrid owner mapping worked
Mailchimp appeared with context
Subdomain DKIM case surfaced
Free DMARC Weekly Digests by Postmark gave us enough information to confirm Microsoft 365 and Google Workspace on the corporate domain, then identify SendGrid and Mailchimp in the weekly summary. The tool struggled once the test moved beyond known senders: the unknown support desk source needed manual classification, and the forwarded mail SPF failure appeared as a failure without a clear explanation path.
EmailAuth.io covered more of the investigation layer. In our test it gave stronger context for Microsoft 365, Google Workspace, SendGrid, and Mailchimp, made the support desk sender easier to classify, and surfaced the DKIM pass on the marketing subdomain in a way we could explain to a non-specialist owner.
User experience
Simple vs guided
Postmark is faster to start; EmailAuth.io is easier to operate once the program is real
Postmark had the shortest path to a weekly report, but the experience flattened once we needed to investigate the unknown sender and the forwarded SPF failure. EmailAuth.io took more setup effort, then gave operators better places to group domains, review evidence, and explain what happened.
Free DMARC Weekly Digests by Postmark
Fast single-domain setup
No central work queue
Forwarding needed manual notes
EmailAuth.io
Guided domain onboarding
Unknown sender was searchable
Forwarding context was visible
Postmark's onboarding was the easiest part of the test: create the DMARC record, verify DNS, and wait for the weekly digest. Across the three domains, the lack of a shared workspace became the main UX cost because the parked domain, marketing subdomain, and corporate domain needed separate notes outside the product.
EmailAuth.io felt heavier at the start because the setup path assumed more context about the email program. After setup, finding the unknown sender was more direct, and the forwarded mail SPF failure had enough surrounding evidence for us to explain why SPF broke while DKIM still protected the message.
Support
Self serve vs service-led
Postmark keeps support light; EmailAuth.io is built for buyers who expect handoff help
Postmark's free product worked when the team already knew how to edit DNS and classify senders. EmailAuth.io had stronger support expectations around onboarding, escalation, and managed help, but buyers need to confirm which support level sits in the quote.
Free DMARC Weekly Digests by Postmark
Self-service for free users
DNS handoff stayed light
No enterprise onboarding path
EmailAuth.io
Managed onboarding available
DNS handoff clearer
Escalation path depends on quote
With Postmark, the DNS handoff was simple because the product asked for a DMARC TXT record and then sent the digest after verification. That simplicity also set the ceiling: when the support desk sender needed ownership assignment and the spoof sample needed escalation, the free workflow did not create a support handoff path.
EmailAuth.io had a clearer service posture. The managed-service path matched the work we would expect during enterprise onboarding: dashboard training, sender review, DNS help, periodic report review, and escalation for threat alerts, though the exact package boundaries were not public.
Suitability
Single domain vs program owner
Postmark fits one-domain monitoring; EmailAuth.io fits larger DMARC ownership
Postmark is the better fit when one domain owner wants a free weekly signal and can do the follow-up work. EmailAuth.io fits teams that need domain grouping, recurring reporting, and enterprise support, but scope clarity matters before buying. For MSP workflows or alert quality, use account separation, client handoff notes, and routed alert review as buying criteria; Suped's product makes those criteria visible before procurement.
Free DMARC Weekly Digests by Postmark
Best for one domain
Manual client handoff
No account separation
EmailAuth.io
Better for enterprise programs
Client grouping needs confirmation
Recurring reports are stronger
Postmark did not feel like an MSP or enterprise console in our test. The weekly digest worked for the corporate domain, but account separation, domain grouping, recurring client reports, and handoff notes had to live outside the tool, which slowed us down on the parked domain and marketing subdomain.
EmailAuth.io made more sense for an enterprise or managed-service buyer. It gave us a better path for grouping domains and creating recurring report narratives, but client handoff for an MSP still needed confirmation because public materials did not clearly define account separation or packaged reporting limits.
What each tool feels like after 90 days of real use
Free DMARC Weekly Digests by Postmark
A free weekly monitor for owners who already know their senders
Free DMARC Weekly Digests by Postmark felt like a weekly alarm for the primary domain, not a command center. It confirmed Microsoft 365 and Google Workspace quickly, showed SendGrid and Mailchimp in the digest, and left the support desk sender in a manual pile until we matched the IP and envelope domain ourselves.
On the marketing subdomain and parked domain, the email-only model slowed us down because each investigation lived outside a shared queue. The forwarded mail SPF failure and the unauthorized spoof sample were visible as failures, but the next step was our own note to the domain owner rather than an in-product policy plan.
Where it wins
Fastest path to a free DMARC signal
Clear weekly summary for known senders
Simple DNS setup for one domain
Public price and obvious limits
Where it lags
No shared investigation workspace
Unknown sender classification stayed manual
No hosted SPF or MTA-STS
No MSP account separation
Pricing
$0
Free tier
Yes
Onboarding
Fast DNS setup
G2 rating
4.6 / 5
EmailAuth.io
A service-led option for larger DMARC programs
EmailAuth.io felt more like a security program than a lightweight digest. Its source view gave more context for Microsoft 365, Google Workspace, SendGrid, and Mailchimp, and the unknown sender was easier to classify once we had domain grouping in place.
The tradeoff was buying friction and a heavier setup path. We wanted clearer public limits before committing, and we still had to confirm whether API access, blocklist (blacklist) context, managed service time, and on-premise deployment belonged in the same quote.
Where it wins
Stronger enterprise onboarding posture
Better source investigation context
Custom alerts and API signals
On-premise deployment advertised
Where it lags
Pricing was not public
Free tier terms were unclear
Hosted SPF was not confirmed
G2 review base was empty
Pricing
Not publicly listed
Free tier
Not confirmed
Onboarding
Sales-led setup
G2 rating
0 / 5
Pricing
Free DMARC Weekly Digests by Postmark
EmailAuth.io
Suped
Small
1 domain, up to 1k emails / month.
$0
Fits the free weekly email workflow for one monitored domain.
Not publicly listed as of May 15, 2026
A free demo path exists, but free plan limits were not public.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
No listed plan
The free weekly product is published for one monitored domain.
Not publicly listed as of May 15, 2026
Expect quote scoping around domains, report volume, and support.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
No listed plan
No multi-domain free tier or volume ladder was published.
Not publicly listed as of May 15, 2026
API, alerts, and managed help need quote confirmation.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
No listed plan
The free weekly product is not an enterprise pricing model.
Not publicly listed as of May 15, 2026
On-premise and managed-service scope require direct pricing.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Postmark's $0 entry is a public list price for Free DMARC Weekly Digests with one monitored domain. Segment sizes are our comparison buckets, not vendor-published volume tiers. EmailAuth.io numbers are not estimates or public list prices; pricing was checked as of May 15, 2026 and was not publicly listed.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Turn findings into fixes
Postmark surfaced the forwarded SPF failure and spoof sample, but the fix lived outside the tool. Suped's product connects a failing sender to DNS and sender-owner next steps.
Clarify sender ownership
EmailAuth.io gave richer investigation context, but the unknown support desk sender still needed owner handoff. Suped's product keeps source classification, owner notes, and policy movement in one operational queue.
Make pricing and MSP work visible
EmailAuth.io pricing and plan limits were not public, while Postmark's free product had no account separation for recurring client work. Suped publishes starter pricing and includes MSP workflows for domain grouping and handoff.
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 Free DMARC Weekly Digests by Postmark or EmailAuth.io?
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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