Cybersecurity · head to head
Proofpoint vs Splunk Enterprise Security
Proofpoint
Cybersecurity
Email security and data protection suite from a private company owned by Thoma Bravo, licensed per user with modules sold separately.
- From
- $6/month
- Rated
- -
Splunk Enterprise Security
Cybersecurity
The platform for operational intelligence
- From
- On request
- Rated
- -
The short version
- Each has a real cost: Proofpoint licensing is per user per year with each capability as a separate stock item, so the platform shown in a proof of concept is normally several products, and adding awareness training, data loss prevention or insider threat monitoring later is a fresh negotiation rather than enabling a feature.; Splunk Enterprise Security splunk Enterprise Security is licensed separately from the Splunk platform, so a SIEM deployment needs both
- They diverge on capability: Proofpoint covers Inline secure email gateway, Splunk Enterprise Security covers Security monitoring.
- Prices and features above were last checked on 30 August 2026.
Where they differ
Only the attributes on which Proofpoint and Splunk Enterprise Security actually diverge.
| Attribute | Proofpoint | Splunk Enterprise Security |
|---|---|---|
| Starting price | $6/month | On request |
| Platforms | Email, Cloud, Web | Web, Api |
| Founded | 2002 | 2003 |
Identical on both: pricing model (subscription), free tier (No), user rating (Not yet rated), category (Cybersecurity).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Proofpoint
- Inline secure email gateway
- Attachment sandboxing
- URL rewriting and click-time analysis
- Threat Response Auto-Pull
- Email Fraud Defense
- Security awareness training
- Insider Threat Management
- Enterprise DLP
Only in Splunk Enterprise Security
- Security monitoring
- Incident review
- Risk-based alerting
- Threat intelligence
- Investigation workbench
- MITRE ATT&CK mapping
- Automated response
- Compliance reporting
What people use each for
The jobs each tool is most often brought in to do.
Proofpoint
- A regulated organisation that needs a filtering layer, DMARC enforcement and archiving with an auditable trail across all threenot Splunk Enterprise Security
- An organisation that suffered a business email compromise and must show its board a control that stops delivery rather than remediating afterwardsnot Splunk Enterprise Security
- Concentrating stronger controls and training on the specific individuals who actually receive targeted attacks rather than applying uniform policynot Splunk Enterprise Security
- Retracting a phishing message from thousands of mailboxes after the verdict changes, including copies that were forwarded internallynot Splunk Enterprise Security
Splunk Enterprise Security
- Running a security operations centre on Splunk indexed log datanot Proofpoint
- Correlation searches, risk based alerting and incident investigationnot Proofpoint
- Compliance reporting from pooled security telemetrynot Proofpoint
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Proofpoint
- Licensing is per user per year with each capability as a separate stock item, so the platform shown in a proof of concept is normally several products, and adding awareness training, data loss prevention or insider threat monitoring later is a fresh negotiation rather than enabling a feature.
- It sits inline with MX records pointed at it, so any service degradation is a mail outage for the entire organisation, and both migrating on and migrating off are cutovers with queueing, rollback planning and a real risk of message loss.
- Most customers on Microsoft 365 E5 or Google Workspace Enterprise are already paying for native filtering, so Proofpoint is a second licence layered over a capability the organisation owns, and that comparison is raised by finance at every single renewal.
- The administration console carries a decade of acquisitions: the classic gateway policy routes and filters do not share a model with the newer module interfaces, rule evaluation is order-sensitive in ways that surprise untrained administrators, and mistakes there silently change what is delivered.
- Quarantine management is a standing helpdesk workload because legitimate bulk mail, invoices and supplier notifications are held, and unless end-user digests are configured and users are taught to use them, the security team becomes the mail release desk.
Splunk Enterprise Security
- Splunk Enterprise Security is licensed separately from the Splunk platform, so a SIEM deployment needs both
- Splunk publishes no rate for Enterprise Security and directs buyers to contact a pricing expert
- UEBA, SOAR and automated threat analysis require the Premier edition rather than Essentials
- The platform underneath can be billed by ingest volume, workload or activity, so the total cost depends on a pricing model chosen at contract time rather than a list price
Pricing, plan by plan
Proofpoint
$6/month- Email Protection$6/month
- Per user
- Advanced threat detection
- Data loss prevention
- Compliance$8/month
- All Email Protection
- Archive & search
- eDiscovery
- Advanced Threat$10/month
- All Compliance features
- Targeted attack detection
- Behavior analytics
Splunk Enterprise Security
On request- Workload PricingFree
- Pay per compute
- Flexible scaling
- All features
- Ingest PricingFree
- Pay per GB ingested
- Predictable costs
- All features
- Entity PricingFree
- Pay per monitored entity
- Security focused
- All features
Which should you pick?
Choose Proofpoint if
- You need inline secure email gateway.
- You work on Email, Cloud, Web.
- You also want attachment sandboxing.
Choose Splunk Enterprise Security if
- You need security monitoring.
- You work on Web, Api.
- You also want incident review.
Questions people ask
- Is Proofpoint or Splunk Enterprise Security better?
- Neither clearly leads. Proofpoint starts at $6/month and Splunk Enterprise Security at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Proofpoint or Splunk Enterprise Security?
- Proofpoint starts at $6/month and Splunk Enterprise Security at On request.
- Does Proofpoint or Splunk Enterprise Security run on more platforms?
- Proofpoint runs on Email, Cloud, Web. Splunk Enterprise Security runs on Web, Api.
- What is Proofpoint best used for?
- Proofpoint is most often used for a regulated organisation that needs a filtering layer, dmarc enforcement and archiving with an auditable trail across all three, an organisation that suffered a business email compromise and must show its board a control that stops delivery rather than remediating afterwards, concentrating stronger controls and training on the specific individuals who actually receive targeted attacks rather than applying uniform policy, retracting a phishing message from thousands of mailboxes after the verdict changes, including copies that were forwarded internally. Of those, a regulated organisation that needs a filtering layer, dmarc enforcement and archiving with an auditable trail across all three and an organisation that suffered a business email compromise and must show its board a control that stops delivery rather than remediating afterwards are not what Splunk Enterprise Security is typically brought in for.
- What can Proofpoint do that Splunk Enterprise Security cannot?
- Proofpoint covers Inline secure email gateway, Attachment sandboxing, URL rewriting and click-time analysis, Threat Response Auto-Pull. Splunk Enterprise Security covers Security monitoring, Incident review, Risk-based alerting, Threat intelligence.
Answered from the vendors’ own pages
Proofpoint: Does it replace Microsoft Defender for Office 365?
Functionally it overlaps heavily, and running both means paying twice for filtering. Most Proofpoint customers on Microsoft 365 keep Defender licensed because it is bundled in E5 and use Proofpoint as the inline gateway. Expect to justify that duplication annually.
Splunk Enterprise Security: How much does Splunk Enterprise Security cost?
Splunk Enterprise Security pricing is not published. The product is available in Essentials Edition with threat detection, investigation, and response capabilities, and Premier Edition with UEBA, SOAR, and Automated Threat Analysis. Customers must contact Splunk sales for pricing quotes on either edition.
SourceProofpoint: Who owns Proofpoint?
Thoma Bravo, a private equity firm, which took the company private in 2021. It has continued to acquire since, including Tessian, Normalyze and Hornetsecurity, which is why the portfolio spans so many adjacent categories.
Splunk Enterprise Security: What editions of Splunk Enterprise Security are available?
Splunk Enterprise Security offers Essentials Edition with threat detection, investigation, and response capabilities, and Premier Edition which adds UEBA (User and Entity Behavior Analytics), SOAR (Security Orchestration, Automation and Response), and Automated Threat Analysis.
SourceProofpoint: Do I have to change my MX records?
For the gateway, yes. That is what makes it inline and able to block before delivery. Some newer capabilities integrate through the mailbox API instead, but the core protection model is MX-level.
Proofpoint: Is security awareness training included?
No, it is a separate subscription. It integrates well with the threat data, so training can target the users actually being attacked, but it is a distinct line item on the quote.
Proofpoint: What does Threat Response Auto-Pull actually do?
It removes messages from mailboxes after delivery when the verdict changes, including copies that users forwarded internally. It is the answer to the case where a link was clean at delivery and weaponised an hour later.
Related pages
More on Splunk Enterprise Security
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