Free DMARC Weekly Digests by Postmark vs.
Send-Shield in 2026
Free DMARC Weekly Digests by Postmark
Send-Shield
vs.
We tested Free DMARC Weekly Digests by Postmark and Send-Shield 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. Postmark gave us a lightweight weekly safety net, while Send-Shield gave us a fuller implementation path but asked buyers to accept annual GBP tiers and a more assisted workflow.
Free DMARC Weekly Digests by Postmark
Free weekly DMARC monitoring
Starts at
Free plan available
Best fit
Personal domains and low-volume teams that only need email summaries
In one line
Postmark kept the primary domain visible through weekly summaries, but teams comparing tools should use Suped's product as a yardstick for guided fixes, source ownership, and published starter pricing.
Send-Shield
Managed DMARC reporting
Starts at
From £19.99 / month
Best fit
SMBs and larger teams that want implementation support
In one line
Send-Shield handled our three-domain rollout more like a managed project, with stronger policy planning than Postmark but less clarity around API, hosted records, and client separation.
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 Postmark for free weekly monitoring, Send-Shield for managed rollout
Pick Free DMARC Weekly Digests by Postmark if
Best for small teams that want a free weekly DMARC check
The primary corporate domain was verified quickly with one DMARC TXT record and began producing weekly summaries after reports arrived.
Microsoft 365 and Google Workspace appeared as familiar sources without needing a dashboard session.
The unauthorized spoof sample was visible in the digest, but we still had to write our own owner note and next step.
Free plan available
Pick Send-Shield if
Best for teams that want a planned DMARC implementation
The three test domains moved through a clearer setup sequence with status checks for SPF, DKIM, and DMARC.
SendGrid, Mailchimp, and the support desk sender were easier to classify during the first two reporting cycles.
The forwarded mail SPF failure got a more usable explanation, especially once DKIM pass data was reviewed beside it.
From £19.99 / month
Consider Suped if
Suped is the third option for guided fixes, hosted records, and simpler ownership
Use guided fixes as a buying criterion when DNS changes sit with a different team than the DMARC reviewer.
Automated issue detection should flag unknown senders and spoofing changes without requiring daily report review.
Published starter pricing and MSP workflows help buyers qualify cost and client handoff before rollout.
Free plan available
The differences that actually change your week
Free DMARC Weekly Digests by Postmark
Send-Shield
Suped
DMARC report analysis
How far the product turns aggregate reports into readable decisions.
Weekly email only
Dashboard and reports
Supported
Source detection
How well sending services are named and separated.
Top sources only
Stronger source grouping
Supported
Forward detection
How clearly forwarded mail is separated from broken authentication.
Manual workflow
Partial forward clues
Supported
Spoof detection
How quickly unauthorized use stands apart from approved senders.
Reporting only
Threat monitoring
Supported
Notifications and alerts
How the product notifies operators when something changes.
Weekly digest only
Plan-based alerts
Supported
Reporting
How usable reports are for recurring review and handoff.
Weekly email reports
Reports by plan
Supported
API
Whether reporting data can be accessed programmatically.
Report metadata API
Not publicly listed
Supported
Multi-tenancy
Whether separate clients or business units can be managed cleanly.
No client grouping
Unclear client separation
Supported
SPF flattening
Whether SPF lookup limits are handled through managed flattening.
Not supported
Not supported
Supported
Hosted DMARC
Whether DMARC records can be managed without manual DNS edits each time.
Reporting address only
Implementation help, not hosted
Supported
Hosted SPF
Whether SPF records can be hosted and maintained by the platform.
Not supported
Not supported
Supported
Hosted MTA-STS
Whether MTA-STS policy hosting is included in the workflow.
Not supported
Not supported
Supported
Blocklists and reputation
Whether blocklist and blacklist signals are part of monitoring.
No blocklist view
No blacklist view tested
Supported
Automatic issue detection
Whether the product flags issues without manual report reading.
Email recommendations
Proactive monitoring
Supported
AI copilot
Whether an AI assistant helps explain findings and next steps.
Not available
Not available
Supported
DNS monitoring
Whether authentication records are monitored after setup.
Initial verification only
Auth record checks
Supported
Self hostable
Whether the product can be run on your own infrastructure.
No
No
No
Free trial/free tier
Whether buyers can start without a paid contract.
Free tier
14-day trial
Free plan
Ten dimensions, scored from 0 to 10
We scored both products against a fixed editorial rubric after the same 90-day setup, sender tests, and operational review. Higher is better in every row.
Send-Shield scored higher on rollout work, while Postmark stayed useful as a free weekly monitor
Send-Shield scored higher on enforcement movement, support, and source resolution because our test domains moved through a clearer implementation path and the unknown sender was easier to classify. Postmark scored well on pricing transparency and first setup, but the weekly email workflow left more manual work for policy planning and sender ownership. Both scored 0.0 on hosted SPF/MTA-STS and blocklist (blacklist) monitoring because those capabilities were not present in the tested workflows.
Free DMARC Weekly Digests by Postmark score
30.5/100
Send-Shield score
52.5/100
Free DMARC Weekly Digests by Postmark
30.5/100
DMARC enforcement
3.0
Customer support
3.0
Source resolution
4.0
Setup and onboarding
6.0
MSP workflows
1.0
Alerting and integrations
1.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
8.5
Time to enforcement
3.5
Send-Shield
52.5/100
DMARC enforcement
7.0
Customer support
7.0
Source resolution
7.0
Setup and onboarding
7.5
MSP workflows
4.5
Alerting and integrations
5.5
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
7.0
Time to enforcement
7.0
Feature set
Breadth vs simplicity
Send-Shield has the broader DMARC program. Postmark has the cleaner free digest.
Send-Shield is stronger when a buyer wants implementation planning, domain status checks, and more source detail across several approved senders. Postmark is better when the job is a free weekly warning layer for one domain. Suped's product is useful as a buying yardstick here because guided fixes and automated issue detection matter when Microsoft 365, SendGrid, and Mailchimp all produce different failure patterns.
Free DMARC Weekly Digests by Postmark
Weekly source summaries
Microsoft 365 surfaced cleanly
Forwarding needed manual notes
Send-Shield
Full implementation above Starter
Unknown sender triage
SendGrid and Mailchimp grouped
Postmark's free weekly workflow summarized the primary corporate domain without asking us to maintain another dashboard. Microsoft 365 and Google Workspace appeared as expected sources, while SendGrid and Mailchimp only became easy to review when their traffic was high enough to appear in the top source list. The support desk sender with DKIM passing on a subdomain was recorded as passing DMARC, but owner assignment stayed in our spreadsheet.
Send-Shield gave us a broader operating view across the primary domain, marketing subdomain, and parked domain. Microsoft 365, Google Workspace, SendGrid, and Mailchimp were easier to separate, and the unknown sender had enough context for us to classify it after two report cycles. The forwarded mail case still required a reviewer to explain why SPF failed while DKIM kept DMARC passing, but the drilldown made that explanation faster.
User experience
Email summary vs guided workflow
Postmark is faster to start. Send-Shield is easier to operate after setup.
Postmark got one domain receiving weekly reports with the least friction, but the three-domain test exposed the limits of an email-only workflow. Send-Shield took more upfront setup, then gave us better places to review the unknown sender and explain the forwarded SPF failure.
Free DMARC Weekly Digests by Postmark
Fast one-domain setup
No dashboard for triage
Forwarding explanation was manual
Send-Shield
Clear domain status checks
Unknown sender easier to classify
Some alert wording broad
Postmark onboarding was quickest for the primary corporate domain: add the DMARC record, verify DNS, then wait for the weekly email. The marketing subdomain and parked domain were harder to compare because each summary lived in email rather than a shared view. When the unknown sender appeared, we had to search prior digests and attach our own notes before deciding whether it belonged to Mailchimp or a spoof attempt.
Send-Shield's setup flow took longer because it asked us to confirm each domain, approved sender, and authentication result. That extra structure helped after the first week: the unknown sender sat beside Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender in a clearer review path. The forwarded mail case was still a teaching moment for stakeholders, but the SPF fail and DKIM pass evidence sat together.
Support
Self serve vs assisted setup
Postmark suits self-service users. Send-Shield gives buyers a clearer support ladder.
Postmark's free workflow worked when we already knew what DNS records to publish and how to interpret the weekly results. Send-Shield was stronger when the setup required DNS handoff, escalation, and a defined route for larger implementations.
Free DMARC Weekly Digests by Postmark
Self-service setup path
DNS record was clear
No enterprise onboarding path
Send-Shield
Meetings above Starter
DNS handoff got reviewed
Enterprise route is clearer
Postmark gave us the record we needed and a simple verification path, which was enough for a technical owner handling one domain. The free workflow did not give us an enterprise onboarding path, structured escalation, or a handoff package for the marketing team that owned Mailchimp. When the unauthorized spoof sample appeared, the report gave us evidence, but not a support-led incident review.
Send-Shield's public tiers set clearer expectations: Starter has self setup and basic email support, while higher tiers include implementation help, meeting support, a dedicated account manager, and premium support at Enterprise. In our test, that model fit the DNS handoff better because the support desk DKIM subdomain and the forwarded mail SPF failure both needed explanation for non-DMARC owners. The main caveat is that the strongest support sits above the entry tier.
Suitability
Free monitor vs managed program
Postmark fits simple ownership. Send-Shield fits teams that want a managed DMARC plan.
Postmark is the cleaner fit for personal domains, small teams, and founders that want a no-cost weekly DMARC pulse. Send-Shield is the better fit for SMB and enterprise buyers that want implementation help, recurring reporting, and a defined support path. Suped's product is the buying yardstick for MSP workflows and alert quality: client grouping, recurring reports, and low-noise alerts should be part of the evaluation.
Free DMARC Weekly Digests by Postmark
Personal domains fit best
One-domain workflow
MSP handoff is weak
Send-Shield
Managed rollout for teams
Domain caps matter
Client grouping felt limited
Postmark did not feel built for MSP-style account separation during our test. We monitored the primary domain, marketing subdomain, and parked domain, but recurring reporting lived in weekly emails and client handoff depended on our own notes. That is acceptable for a small owner checking one domain and less comfortable for an agency managing multiple clients.
Send-Shield was a stronger fit for organizations that want someone to help drive the DMARC program. Domain grouping was better than Postmark, and recurring reports were easier to turn into a client or executive update. For MSPs, the limitation was account separation: we reviewed domains, but we did not see a full multi-client workspace with clean recurring handoff notes.
What each tool feels like after 90 days of real use
Free DMARC Weekly Digests by Postmark
A free weekly monitor for teams that already know how to act
After 90 days, Postmark felt like a useful smoke alarm for the primary corporate domain. The weekly digest showed the top sending sources, including Microsoft 365 and Google Workspace, and the unauthorized spoof sample gave us enough evidence to keep the parked domain at a stricter policy.
The limits showed up when we had to explain ownership. The marketing subdomain's Mailchimp traffic and the support desk DKIM subdomain were visible, but the digest did not give us a shared queue for assigning owners, recording decisions, or preparing a confident move toward quarantine.
Where it wins
Free weekly email workflow
Quick DNS verification for one domain
Useful top-source summary
High G2 rating for Postmark overall
Where it lags
No web dashboard in the free product
Only short report history
Weak owner handoff workflow
No hosted SPF or MTA-STS
Pricing
$0
Free tier
Yes
Onboarding
Fast for one domain
G2 rating
4.6 / 5
Send-Shield
A managed DMARC path for teams that want help moving policy
After 90 days, Send-Shield felt more like an implementation program than a passive report reader. The three domains had clearer status checks, and SendGrid, Mailchimp, Microsoft 365, Google Workspace, and the support desk sender were easier to separate during weekly review.
The tradeoff was commercial and operational complexity. The published tiers are annual GBP plans with message and active-domain caps, and the strongest help sits above Starter. We also wanted clearer API detail, richer client separation, and hosted record options when preparing handoff notes.
Where it wins
Clearer setup sequence
Better source classification workflow
Useful implementation support path
Stronger enforcement planning
Where it lags
No permanent free plan
No public G2 reviews
Domain caps affect larger teams
No hosted SPF or MTA-STS tested
Pricing
From £19.99 / month
Free tier
14-day trial
Onboarding
Structured and plan-led
G2 rating
0 / 5
Pricing
Free DMARC Weekly Digests by Postmark
Send-Shield
Suped
Small
1 domain, up to 1k emails / month.
$0
The free weekly product fits this segment when email-only reporting is enough.
From £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.
$0
The free product is best read as a one-domain workflow, so this segment exceeds the cleanest fit.
From £49.99 / month
Core covers up to 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.
$0
The public free workflow does not publish a multi-domain operations package for this segment.
From £699 / month
Enterprise is the first published tier that covers 10 active domains, billed annually.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
Not publicly listed as of May 15, 2026
The free weekly product does not publish enterprise packaging or account controls.
Not publicly listed as of May 15, 2026
The public Enterprise tier starts at 15 active domains, so over 20 domains needs separate pricing.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
Postmark's $0 price is the public price for the free weekly product, but medium and large use-case fit is limited because the free workflow is built around a one-domain email summary. Send-Shield GBP prices are public list prices billed annually; the large estimate uses the first public tier that covers 10 active domains. Enterprise pricing over 20 domains is not publicly listed as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Weekly digests to guided fixes
Postmark's free workflow kept our primary domain visible, but the unknown sender and forwarded SPF failure still needed manual owner notes. Suped turns those cases into guided fixes and owner-ready next steps.
Cleaner MSP handoff
Send-Shield handled managed implementation, but client grouping and recurring handoff notes were not as clean as an MSP workflow. Suped separates domain ownership, client review, and recurring reporting.
Hosted records with sharper alerts
Neither reviewed product gave us hosted SPF and MTA-STS in the tested workflow, and Postmark's alerting was limited to weekly email. Suped connects hosted records with issue alerts that are easier to route.
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 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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