Free DMARC Weekly Digests by Postmark vs.
LetsDMARC in 2026
Free DMARC Weekly Digests by Postmark
LetsDMARC
vs.
We tested Free DMARC Weekly Digests by Postmark and LetsDMARC for 90 days across a primary corporate domain, a marketing subdomain, and a parked domain. We connected Microsoft 365, Google Workspace, SendGrid, Mailchimp, and a support desk sender, then ran controlled cases for SPF, DKIM, forwarding, spoofing, and an unknown sender. The verdict is direct: Postmark's free digest works as a narrow weekly signal, while LetsDMARC is the stronger operating tool for policy movement and multi-domain work.
Published 4 Nov 2025
Updated 30 May 2026
8 min read
Summarize with
Free DMARC Weekly Digests by Postmark
Free weekly DMARC email reporting
Starts at
$0
Best fit
Single-domain owners who want a weekly DMARC pulse
In one line
It gave us a useful weekly signal for the primary domain, but buyers needing guided fixes and owned source identification should make those separate buying criteria.
LetsDMARC
DMARC enforcement and managed DNS platform
Starts at
From GBP 264 / year
Best fit
Security and IT teams managing several domains
In one line
It handled the three-domain test with richer investigation, tenant, alert, and DNS workflows, though exact commercial limits required a quote path.
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 a free weekly signal, LetsDMARC for active DMARC operations
Pick Free DMARC Weekly Digests by Postmark if
Best for one domain with a technical owner who checks email weekly
Our primary domain was verified quickly, and the first weekly email separated Microsoft 365 and Google Workspace clearly.
The parked-domain spoof sample appeared as a failed source, but investigation stayed in the email report.
The marketing subdomain needed a separate manual note because the free workflow did not group domains.
Free plan available
Pick LetsDMARC if
Best for teams that need enforcement movement across several domains
The three domains stayed in one operating view with tenant-style separation and exports.
SendGrid and Mailchimp classifications were easier to turn into owner handoff notes.
The SPF pass with visible From mismatch and forwarded SPF failure were easier to explain from drilldowns.
From GBP 264 / year
Consider Suped if
Choose Suped when guided fixes, hosted records, and simpler ownership matter
Guided fixes should map Microsoft 365, Google Workspace, SendGrid, and Mailchimp failures to a clear owner.
Automated issue detection and alert quality should separate spoofing, forwarding noise, and DNS drift.
MSP workflows and published starter pricing should be visible before a sales call.
Free plan available
The differences that actually change your week
Free DMARC Weekly Digests by Postmark
LetsDMARC
Suped
DMARC report analysis
Turns aggregate reports into readable sender and authentication views.
Weekly email only
Dashboard and drilldowns
Supported
Source detection
Names approved and unknown sending services.
Top sources only
Classification workflow
Supported
Forward detection
Separates forwarding-related SPF failure from sender misconfiguration.
Manual workflow
Partial drilldown support
Supported
Spoof detection
Highlights unauthorized mail using the protected domain.
Reporting only
Dashboard investigation
Supported
Notifications and alerts
Routes meaningful changes or failures to the right owner.
Weekly email only
Alert channels available
Supported
Reporting
Creates recurring summaries for technical and non-technical readers.
Weekly digest
Reports and exports
Supported
API
Allows programmatic access for operational workflows.
Metadata API
Administrative API
Available
Multi-tenancy
Separates domains, clients, or business units.
Not included
Parent and child tenants
Supported
SPF flattening
Helps avoid SPF lookup limits while keeping senders current.
Not included
Hosted SPF option
Available
Hosted DMARC
Publishes or manages the DMARC policy record.
DNS record only
Managed DNS option
Available
Hosted SPF
Publishes or manages the SPF record.
Not included
Hosted SPF option
Available
Hosted MTA-STS
Manages the MTA-STS policy and reporting workflow.
Not included
Not tested
Available
Blocklists and reputation
Checks blocklist or blacklist reputation signals.
No blocklist view
No blacklist workflow found
Blocklist and blacklist monitoring
Automatic issue detection
Turns new failures or DNS drift into clear issues.
Manual review
Alerts and DNS monitoring
Supported
AI copilot
Explains authentication issues and next steps inside the workflow.
Not included
Not found
Available
DNS monitoring
Tracks record changes that affect authentication.
Verification only
DNS timeline
Supported
Self hostable
Can run in an on-premise or self-managed deployment.
No
On Premise option
No
Free trial/free tier
Allows evaluation without a paid production commitment.
Free tier
30-day free trial
Free plan available
Ten dimensions, scored from 0 to 10
We scored both products against the same editorial rubric after the 90-day test. Higher is better in every row, and a 0.0 means the product did not support that capability in our evaluation.
Postmark wins on a free first signal; LetsDMARC wins on operational depth
Free DMARC Weekly Digests scored well for setup speed and pricing clarity because the $0 weekly email workflow was obvious, but it lost ground on enforcement, tenant separation, and hosted records. LetsDMARC scored higher on policy movement, source resolution, tenant controls, alerts, and managed DNS because the three test domains were investigated together. LetsDMARC scored lower on pricing transparency and blocklist monitoring because exact limits were not public and we did not find a usable blocklist or blacklist workflow in testing.
Free DMARC Weekly Digests by Postmark score
33/100
LetsDMARC score
62.5/100
Free DMARC Weekly Digests by Postmark
33/100
DMARC enforcement
3.0
Customer support
4.0
Source resolution
4.0
Setup and onboarding
7.0
MSP workflows
1.0
Alerting and integrations
2.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
9.0
Time to enforcement
3.0
LetsDMARC
62.5/100
DMARC enforcement
8.0
Customer support
7.5
Source resolution
7.5
Setup and onboarding
7.0
MSP workflows
8.0
Alerting and integrations
7.5
Hosted SPF and MTA-STS
6.0
Blocklist monitoring
0.0
Pricing transparency
3.0
Time to enforcement
8.0
Feature set
Email summary vs platform controls
LetsDMARC has the broader feature set. Free DMARC Weekly Digests stays useful for narrow monitoring.
Our feature-set preference goes to LetsDMARC for teams that need enforcement, hosted SPF, managed DNS, DNS monitoring, APIs, and tenant controls. Free DMARC Weekly Digests still works when the job is a weekly signal on a small domain. A useful buying check is whether issue detection turns a failed source into a guided fix with an owner, not just another row in a report.
Free DMARC Weekly Digests by Postmark
Microsoft 365 grouped cleanly
Google Workspace confirmed fast
SendGrid details truncated
LetsDMARC
Mailchimp owner workflow
Mismatch surfaced fast
Unknown sender classified
Free DMARC Weekly Digests by Postmark kept the feature set narrow. In our 90-day run, Microsoft 365 and Google Workspace appeared as expected in the weekly email, and the product gave enough signal to spot the parked-domain spoof sample when it appeared in the top source view. The tradeoff was depth: SendGrid and Mailchimp needed manual owner notes, the unknown sender required outside classification, and the SPF pass with visible From mismatch did not become a guided remediation path.
LetsDMARC covered more of the DMARC operating cycle. Microsoft 365, Google Workspace, SendGrid, and Mailchimp were easier to separate by domain and service, the unknown sender had a place to be classified, and the SPF pass with visible From mismatch was easier to explain as a DMARC issue rather than a sending outage. We also found managed SPF, DNS monitoring, tenant controls, alerts, API coverage, and export options that Free DMARC Weekly Digests did not provide.
User experience
Digest simplicity vs console control
Postmark is easier to start. LetsDMARC is easier to operate after setup.
Free DMARC Weekly Digests had the shortest path to first signal because setup was just DNS verification and a weekly email. LetsDMARC took more configuration, but the larger workflow made unknown sender review, forwarding explanations, and multi-domain follow-up less manual.
Free DMARC Weekly Digests by Postmark
Primary domain was fast
Unknown sender needed notes
Forwarding context was thin
LetsDMARC
Three domains stayed together
Unknown sender queued cleanly
Forwarding was explainable
Onboarding the primary corporate domain into Free DMARC Weekly Digests was fast: add the DMARC TXT record, verify DNS, and wait for the first weekly email. The marketing subdomain and parked domain made the workflow feel less like a shared console and more like separate inbox evidence.
LetsDMARC took longer to configure because we added three domains, approved senders, and policy targets, but the product made the larger setup easier to operate. The unknown sender sat in a classification workflow instead of becoming a note outside the tool. The forwarded mail SPF failure was easier to explain because the drilldown kept SPF failure, DKIM pass, and visible From context together.
Support
Self-serve help vs rollout support
Postmark fits light support expectations. LetsDMARC fits larger rollout handoff.
Free DMARC Weekly Digests gave us enough setup guidance for a technical owner, but not enough structure for escalation or enterprise onboarding. LetsDMARC had the stronger support fit for DNS handoff, managed records, deployment choices, and multi-tenant rollout, with the tradeoff that production scope moved into a quote path.
Free DMARC Weekly Digests by Postmark
Docs-led setup
DNS handoff was basic
Escalation path was thin
LetsDMARC
Clearer DNS handoff
Enterprise onboarding fit
Quote path required
Free DMARC Weekly Digests is mostly a documentation-led setup. The DNS record was easy to create for the primary domain, but the marketing subdomain and parked domain handoff relied on our own notes because the free workflow did not create a shared support workspace.
LetsDMARC had the stronger setup handoff. DNS steps were clearer for SPF, DKIM, and DMARC policy movement, and the deployment choices made more sense for enterprises that need security review before production. Escalation looked more appropriate for a larger rollout, especially when tenant separation and managed DNS were involved.
Suitability
Single owner vs operating team
Postmark fits small ownership. LetsDMARC fits teams with domain and client separation.
Free DMARC Weekly Digests is best when one owner wants a weekly DMARC check without a broader operating process. LetsDMARC is the better fit when domains, clients, exports, and policy movement need separation. Teams comparing a third option should test MSP workflows and alert quality by running client grouping, recurring reports, alert routing, and handoff notes before buying.
Free DMARC Weekly Digests by Postmark
Best for one owner
Weak client grouping
Weekly handoff only
LetsDMARC
Enterprise tenant controls
MSP grouping worked
Recurring reports fit
Free DMARC Weekly Digests by Postmark fit the personal-domain and small-business end of the test. The primary corporate domain got a simple weekly pulse, but the marketing subdomain and parked domain did not become a clean grouped account, and recurring reporting meant forwarding emails or exporting our own notes.
LetsDMARC fit the enterprise and MSP side of the test better. Parent and child tenant behavior, domain grouping, reporting, and export paths made it realistic to split a corporate domain, marketing subdomain, parked domain, and client domains without mixing ownership. For SMBs, that added structure was heavier than necessary.
What each tool feels like after 90 days of real use
Free DMARC Weekly Digests by Postmark
A weekly checkpoint for a small, technically owned domain
The product felt like a scheduled checkpoint. Microsoft 365 and Google Workspace were easy to confirm in the weekly email, and the parked-domain spoof sample was visible enough to tell us something was wrong without opening a console.
The limits showed up once the marketing subdomain, SendGrid, Mailchimp, forwarding, and the unknown sender all needed owner decisions. We kept a separate tracker for classifications, DNS changes, and the forwarded SPF failure because the email did not hold the operational history.
Where it wins
Fast one-domain setup
$0 monitoring for small domains
Readable weekly executive signal
Spoof sample surfaced
Where it lags
No unified three-domain view
Unknown sender stayed manual
No hosted SPF or MTA-STS
Alerts limited to weekly email
Pricing
$0
Free tier
Yes
Onboarding
Fast for one domain
G2 rating
4.6 / 5
LetsDMARC
An operating console for teams moving toward enforcement
LetsDMARC felt like an operating console after the first setup pass. The primary domain, marketing subdomain, and parked domain stayed in one view, and we drilled from Microsoft 365 or Google Workspace summary counts into message-level authentication results.
The product was stronger when the task became policy movement. SendGrid and Mailchimp were easier to classify, the SPF visible From mismatch was explained as a DMARC failure, and the forwarded SPF failure was less likely to trigger the wrong remediation because DKIM context was nearby.
Where it wins
Three-domain workflow held together
Clearer enforcement planning
Useful tenant separation
Managed SPF options
Where it lags
Public tier limits unclear
Quote path for production
No confirmed blacklist monitoring
Some UI settings reset
Pricing
From GBP 264 / year
Free tier
30-day free trial
Onboarding
Clear for three domains
G2 rating
4.5 / 5
Pricing
Free DMARC Weekly Digests by Postmark
LetsDMARC
Suped
Small
1 domain, up to 1k emails / month.
$0
Fits one low-volume domain with weekly email reporting and limited history.
From GBP 264 / year
A public starting price exists, but included domains and volume are not published.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
Free plan only
The free product monitors one domain, so this segment sits outside the published workflow.
Not publicly listed as of May 15, 2026
Exact domain and volume limits require a quote.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
Free plan only
No public large-domain tier exists for this free weekly digest product.
Not publicly listed as of May 15, 2026
Message quota and deployment choices require a quote.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
Free plan only
No enterprise package is published for this free weekly digest product.
Not publicly listed as of May 15, 2026
Enterprise scope is quote-based, including usage and deployment requirements.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
No row uses an estimated paid price. Postmark's $0 price is public list pricing for Free DMARC Weekly Digests by Postmark. The GBP 264 / year LetsDMARC starting point is a public directory listing, while official package limits, volume bands, and enterprise prices were not public; pricing was checked as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Turn sources into owners
Free DMARC Weekly Digests surfaced SendGrid and Mailchimp in the weekly email, but owner handoff stayed manual. Suped's product workflow is built around sender identification, classification, and assigned fixes.
Reduce alert noise
LetsDMARC gave us broader alerts, but the test still required tuning for forwarded SPF failures and DNS-change notices. Suped focuses alerts on authentication failures, spoofing, and sender changes that need action.
Keep domains separated
Postmark's free digest was too narrow for MSP-style client grouping, while LetsDMARC's tenant model pushed us toward a quote. Suped publishes starter pricing and supports multi-domain and MSP workflows without hiding the first buying step.
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 LetsDMARC?
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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