Open-DMARC-Analyzer vs.
Splunk TA-DMARC add-on in 2026
Open-DMARC-Analyzer
Splunk TA-DMARC add-on
vs.
We tested both products for 90 days across a corporate domain, a marketing subdomain, and a parked domain, with Microsoft 365, Google Workspace, SendGrid, Mailchimp, and one support desk sender connected, then ran controlled cases for matching SPF pass, matching DKIM pass, SPF pass with header from mismatch, DKIM pass on a subdomain, forwarded SPF failure, one spoof sample, and one unknown sender. Open-DMARC-Analyzer fit a no-license-fee self-hosted reporting workflow, while Splunk TA-DMARC add-on fit teams that already run Splunk and want DMARC events in their existing search and alerting stack. The blunt tradeoff was ownership: Open-DMARC-Analyzer needed more manual interpretation, and Splunk TA-DMARC inherited Splunk strength plus archived add-on risk.
Open-DMARC-Analyzer
Self-hosted DMARC aggregate reporting
Starts at
Free plan available
Best fit
Technical teams that can own hosting, parsing, and analysis
In one line
We found it kept aggregate DMARC evidence readable after parsing; guided fixes and hosted records were the buying gap to compare with Suped.
Splunk TA-DMARC add-on
DMARC ingest for Splunk operators
Starts at
Free plan available
Best fit
Splunk-first security and operations teams
In one line
We found it useful for DMARC events inside existing Splunk search and alerting, with add-on support status as the main risk.
Suped
The third option. Hosted SPF, DMARC, and MTA-STS on every plan. Published pricing. Monthly plans. No long contract required.
Learn about Suped
Use the self-hosted viewer for cost control, use Splunk when DMARC belongs in SecOps
Pick Open-DMARC-Analyzer if
Best for technical teams that want a self-hosted DMARC viewer
We added all three domains after building the parser, database, and web application path ourselves.
Microsoft 365 and Google Workspace were readable once report data landed in the database.
The spoof sample needed manual interpretation before we were comfortable planning policy movement.
Free plan available
Pick Splunk TA-DMARC add-on if
Best for teams already committed to Splunk operations
Microsoft 365, Google Workspace, SendGrid, Mailchimp, and support desk events searched cleanly after ingestion.
The forwarded mail SPF failure was easier to explain with Splunk search history.
The archived add-on left DNS setup and DMARC enforcement planning outside the workflow.
Free plan available
Consider Suped if
Choose Suped when guided fixes, hosted records, and simpler ownership matter
Guided fixes should point source owners to the exact SPF, DKIM, or DMARC change.
Automated issue detection should separate spoofing, forwarding, and unknown sender drift without custom searches.
Published starter pricing should make the first domain and MSP rollouts easy to scope.
Free plan available
The differences that actually change your week
Open-DMARC-Analyzer
Splunk TA-DMARC add-on
Suped
DMARC report analysis
Aggregate report review across domains and senders.
Aggregate report viewer
Splunk indexed events
Aggregate report analysis
Source detection
Ability to turn IPs and hosts into recognizable sending sources.
Manual source grouping
Search-based source lookup
Named sending sources
Forward detection
Detection of forwarding patterns where SPF fails but DKIM survives.
Manual evidence only
Search rule needed
Forwarding patterns detected
Spoof detection
Visibility into unauthorized mail that fails DMARC.
Visible in failures
Search and alert capable
Automatic spoof alerts
Notifications and alerts
Operational alerts for drift, spoofing, and report changes.
Not built in
Splunk alerts
Alerting included
Reporting
Recurring or exportable reporting for domain owners.
Dashboard reporting
Splunk reports
Scheduled reporting
API
Programmatic access for reporting and workflow automation.
No public API found
Splunk API
API available
Multi-tenancy
Account separation for teams, clients, or business units.
No native separation
RBAC and indexes
Account separation
SPF flattening
Managed SPF flattening to reduce lookup failures.
Not supported
Not supported
Supported
Hosted DMARC
Hosted DMARC record management.
Not supported
Not supported
Supported
Hosted SPF
Hosted SPF record management.
Not supported
Not supported
Supported
Hosted MTA-STS
Hosted MTA-STS policy and TLS reporting workflow.
Report support only
Not supported
Supported
Blocklists and reputation
Coverage for blocklist or blacklist signals that affect sending reputation.
Not supported
Not supported
Supported
Automatic issue detection
Automatic detection of authentication breaks, new sources, and risky changes.
Manual workflow
Custom search needed
Supported
AI copilot
Natural-language help for diagnosis and next steps.
Not supported
Not supported
Supported
DNS monitoring
Monitoring for DNS record drift and authentication record changes.
Not built in
Custom monitoring needed
Supported
Self hostable
Ability to run the product in your own environment.
Self-hosted
Splunk deployment
Cloud service
Free trial/free tier
Free entry path for testing or low-volume use.
$0 software
$0 add-on
Free plan available
Ten dimensions, scored from 0 to 10
We scored each product against a fixed editorial rubric built around setup, source resolution, enforcement readiness, alerts, account separation, hosted records, blocklist or blacklist monitoring, and pricing clarity. Higher is better in every row, and a score of 0.0 means the product did not support that capability in our test.
Open-DMARC-Analyzer wins on cost control; Splunk TA-DMARC wins when the Splunk stack already exists.
Open-DMARC-Analyzer scored better on pricing clarity because the software license was plainly $0, but it lost points where the workflow depended on our own parser, hosting, alerting, and remediation notes. Splunk TA-DMARC scored higher on source investigation, alert routing, and multi-tenant patterns because Splunk search, reports, indexes, and RBAC filled those gaps. Both scored 0.0 for hosted SPF, hosted MTA-STS, and blocklist monitoring because neither product supplied those workflows during the test.
Open-DMARC-Analyzer score
25/100
Splunk TA-DMARC add-on score
37.5/100
Open-DMARC-Analyzer
25/100
DMARC enforcement
4.0
Customer support
1.0
Source resolution
4.0
Setup and onboarding
3.0
MSP workflows
1.5
Alerting and integrations
0.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
8.0
Time to enforcement
3.5
Splunk TA-DMARC add-on
37.5/100
DMARC enforcement
5.0
Customer support
1.0
Source resolution
5.5
Setup and onboarding
4.0
MSP workflows
6.5
Alerting and integrations
7.0
Hosted SPF and MTA-STS
0.0
Blocklist monitoring
0.0
Pricing transparency
3.5
Time to enforcement
5.0
Feature set
Viewer vs data pipeline
Open-DMARC-Analyzer is simpler to inspect; Splunk TA-DMARC is broader if Splunk is already in place.
Open-DMARC-Analyzer gave us the core DMARC report facts without a large platform dependency, while Splunk TA-DMARC let us search and alert on DMARC data with other operational telemetry. The practical buying criterion is whether the product turns authentication findings into guided fixes or leaves operators to write the next step. Suped's guided fixes and automated issue detection are a useful benchmark here, because both tested products stopped short of owner-ready remediation.
Open-DMARC-Analyzer
Clear aggregate DMARC counts
Manual sender naming notes
Mismatch visible, not explained
Splunk TA-DMARC add-on
Searchable sender events
Mailchimp grouped by query
Subdomain DKIM searchable
Open-DMARC-Analyzer handled the core report analysis after our parser and database path were stable. Microsoft 365 and Google Workspace showed counts, disposition, SPF, DKIM, and domain-match fields clearly, but SendGrid and Mailchimp needed our own naming notes so shared infrastructure did not stay vague. The unknown support desk sender stayed as an IP and host clue until we classified it manually, and the SPF pass with header from mismatch was visible but not translated into an enforcement recommendation.
Splunk TA-DMARC treated the same sources as searchable events. Microsoft 365, Google Workspace, SendGrid, and Mailchimp were easier to compare by index, sourcetype, source IP, and organizational domain, and the unknown sender was faster to isolate with a saved search. The DKIM pass on a subdomain edge case was easier to investigate in raw event history, but the add-on did not create a DMARC policy plan by itself.
User experience
Control vs search muscle
Open-DMARC-Analyzer is easier to understand once running; Splunk TA-DMARC is faster for operators who live in Splunk.
Open-DMARC-Analyzer had a more direct DMARC screen, but it required us to build and maintain the intake path before the screen mattered. Splunk TA-DMARC had more setup friction, yet the unknown sender and forwarded mail case were easier to trace once events were indexed.
Open-DMARC-Analyzer
Three domains required manual setup
Unknown sender stayed manual
Forwarding needed human explanation
Splunk TA-DMARC add-on
Inputs took Splunk knowledge
Unknown sender search worked
Forwarding story was traceable
We added the corporate domain, marketing subdomain, and parked domain in Open-DMARC-Analyzer after configuring the database and report parser. The parked domain was useful for spotting the spoof sample, but finding the unknown sender meant leaving the product to compare IPs, reverse DNS, and our sender inventory. The forwarded mail SPF failure appeared in the data, but the explanation for the support desk had to be written manually.
With Splunk TA-DMARC, onboarding was mostly Splunk input work: mailbox access, parsing, indexes, and saved searches. The unknown sender was faster to find because we could pivot by source IP and organizational domain across the full 90-day window. The forwarded mail SPF failure was easier to explain because the raw events showed SPF fail, DKIM pass, and receiver behavior in one search trail.
Support
Self-service vs platform escalation
Neither product gave us a complete supported DMARC onboarding path.
Open-DMARC-Analyzer was a self-hosted open-source path, so support meant internal ownership of PHP, database, parser, TLS, and access-control work. Splunk TA-DMARC had a clearer enterprise platform route if Splunk was already licensed, but the add-on itself was archived and not supported, so DMARC-specific escalation stayed unclear.
Open-DMARC-Analyzer
Self-service support model
DNS handoff was internal
No enterprise onboarding path
Splunk TA-DMARC add-on
Archived add-on risk
Platform escalation separate
Enterprise path depends on Splunk
For Open-DMARC-Analyzer, we treated setup help as self-service. DNS handoff notes, parser troubleshooting, database errors, and the enforcement checklist were all owned by our test team, and there was no paid setup package or enterprise onboarding path for the specific project. That was acceptable for a technical team, but it put the full burden of escalation on internal staff.
For Splunk TA-DMARC, the Splunk environment had normal platform support expectations, but the DMARC add-on did not. DNS setup and sender approval were outside the add-on, and escalation for parsing or mailbox collection issues depended on Splunk admin knowledge plus archived project material. Enterprise onboarding was practical only when the buyer already had a Splunk operating model.
Suitability
Operator fit vs enterprise fit
Open-DMARC-Analyzer suits internal technical ownership; Splunk TA-DMARC suits Splunk-centered enterprises.
Open-DMARC-Analyzer made the most sense for teams that can run their own infrastructure and only need internal DMARC visibility. Splunk TA-DMARC made more sense for larger organizations that already use Splunk for investigations, alert routing, and retention. For MSPs, alert quality, account separation, and recurring client-ready reports should be explicit buying criteria; Suped is built around those workflows.
Open-DMARC-Analyzer
Best for internal domains
Limited client separation
Manual recurring reports
Splunk TA-DMARC add-on
Best inside Splunk
RBAC can separate clients
Reports need search ownership
Open-DMARC-Analyzer was workable for an SMB or internal IT team with a small domain set and enough engineering time. The corporate domain, marketing subdomain, and parked domain could be reviewed together, but account separation, client grouping, recurring reporting, and handoff notes were not native workflows. For MSP use, that meant every client summary would need manual packaging.
Splunk TA-DMARC fit an enterprise team better because indexes, RBAC, scheduled searches, and dashboards could separate domains or business units. That helped with recurring reporting, but it also meant the DMARC program depended on Splunk owners to maintain searches and reports. For MSPs, client handoff was possible but heavy unless the MSP already had a mature Splunk service model.
What each tool feels like after 90 days of real use
Open-DMARC-Analyzer
A practical self-hosted viewer for teams that own the whole DMARC pipeline
After 90 days, Open-DMARC-Analyzer felt like a useful internal viewer once the report pipeline was already healthy. The corporate domain and marketing subdomain were easy to compare by disposition and authentication result, but the parked domain mostly acted as a manual spoof watchlist because there was no workflow pushing us toward policy changes.
The SendGrid and Mailchimp sources stayed understandable only because we maintained a naming sheet outside the tool. When the unauthorized spoof sample arrived, the evidence was visible, but our enforcement plan still depended on an analyst checking DNS, sender ownership, and recent forwarding noise.
Where it wins
No software license cost
Readable aggregate report views
Works in self-hosted environments
Useful parked-domain spoof visibility
Where it lags
Manual sender classification
No built-in alerts
No hosted SPF or MTA-STS
No native client separation
Pricing
$0 software
Free tier
Yes
Onboarding
Manual self-hosting
G2 rating
0 / 5
Splunk TA-DMARC add-on
A useful DMARC data feed for teams already running Splunk
After 90 days, Splunk TA-DMARC add-on felt like a DMARC data feed for a Splunk team, not a standalone DMARC product. Once the IMAP input and parsing were stable, we could pivot across Microsoft 365, Google Workspace, SendGrid, Mailchimp, and the support desk sender with normal Splunk searches.
The tradeoff was ownership. The archived add-on got events into Splunk, but DMARC policy movement, sender approval, recurring summaries, and escalation notes were work items we had to design in Splunk or maintain outside the add-on.
Where it wins
Searchable DMARC event history
Splunk alert routing
RBAC and index separation
Good forensic trail for forwarding
Where it lags
Archived not-supported add-on
No DMARC-specific pricing clarity
No guided enforcement workflow
Requires Splunk admin skill
Pricing
$0 add-on
Free tier
Yes
Onboarding
Splunk admin required
G2 rating
0 / 5
Pricing
Open-DMARC-Analyzer
Splunk TA-DMARC add-on
Suped
Small
1 domain, up to 1k emails / month.
$0 software
Fits if one domain can run on self-hosted infrastructure and staff maintain the parser.
$0 add-on
Add-on cost is zero, but Splunk platform capacity is separate and not publicly listed as of May 15, 2026.
$0 / month
Free plan covers 1 domain and 1,000 monthly emails.
Medium
2 domains, up to 100k emails / month.
$0 software
No published domain or volume cap; database, storage, and maintenance are the practical costs.
$0 add-on
DMARC data contributes to Splunk ingest or workload planning; total platform pricing is not public.
Entry plan covers 2 domains and 100,000 monthly emails, with 90 days retention.
Large
10 domains, up to 1 million emails / month.
$0 software
The product does not publish paid volume bands, so scaling depends on server and database capacity.
$0 add-on
The add-on has no DMARC-specific charge, but Splunk ingest, retention, and search load drive cost.
10 domains and 1,000,000 monthly emails, with 365 days retention.
Enterprise
Over 20 domains and 1 million emails / month.
$0 software
No paid enterprise tier was listed; internal support, security, backups, and uptime become procurement items.
$0 add-on
TA-DMARC has no public enterprise tier; Splunk platform pricing is not publicly listed as of May 15, 2026.
20 domains and 2,500,000 monthly emails, with 365 days retention. Unlimited domains/emails negotiable.
The $0 values are public product-license prices for Open-DMARC-Analyzer software and the Splunk TA-DMARC add-on itself. Splunk platform costs are not publicly listed as of May 15, 2026 and depend on ingest or workload terms; self-hosting costs for Open-DMARC-Analyzer are estimated operational costs, not product fees. Pricing was checked as of May 15, 2026.
If you cannot decide between the two, maybe the answer is Suped
Suped
Get started
Guided remediation
Open-DMARC-Analyzer showed the spoof sample and sender failures, but the next steps lived in our manual notes. Suped turns those findings into owner-ready SPF, DKIM, and DMARC fixes.
Operational alerts
Splunk TA-DMARC relied on custom Splunk searches for the forwarded SPF failure and spoof sample. Suped groups authentication failures, unknown senders, and spoofing changes into DMARC-focused alerts.
Client handoff
Open-DMARC-Analyzer lacked native account separation, and Splunk required RBAC and saved reports. Suped has MSP account separation, recurring reports, and client-ready handoff notes in the DMARC workflow.
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 Open-DMARC-Analyzer or Splunk TA-DMARC add-on?
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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