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Cybersecurity · head to head

Proton Mail vs SentinelOne

Proton Mail logo

Proton Mail

Cybersecurity

Secure email that protects your privacy

From
Free
Rated
-
Full reviewWebsite
SentinelOne logo

SentinelOne

Cybersecurity

Autonomous endpoint protection and response

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Proton Mail has a free tier, so it costs nothing to try first.
  • Each has a real cost: Proton Mail paid plan pricing not displayed on vendor site; SentinelOne enterprise pricing requires contacting sales
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Proton Mail and SentinelOne actually diverge.

Attributes where Proton Mail and SentinelOne differ
AttributeProton MailSentinelOne
Starting priceFreeOn request
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsWebWindows, Macos, Linux, Ios, Android
FoundedUnknown2013

Identical on both: 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 Proton Mail

Nothing recorded that SentinelOne does not also cover.

Only in SentinelOne

  • AI-powered detection
  • Autonomous response
  • Behavioral threat intelligence
  • Root cause analysis
  • Threat hunting automation
  • Ransomware protection
  • Container security
  • Mobile endpoint protection

What people use each for

The jobs each tool is most often brought in to do.

Proton Mail

  • Encrypted email communicationnot SentinelOne
  • Privacy-focused email servicenot SentinelOne
  • Family email protectionnot SentinelOne

SentinelOne

  • Endpoint detection and responsenot Proton Mail
  • AI-powered threat huntingnot Proton Mail
  • Cloud workload securitynot Proton Mail

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Proton Mail

  • Paid plan pricing not displayed on vendor site
  • Free tier limited to 1 GB storage
  • Free tier limited to single email address

SentinelOne

  • Enterprise pricing requires contacting sales
  • Prices shown for 5-100 workstations may differ for larger deployments
  • Purchases must be made through authorized third-party partners

Pricing, plan by plan

Proton Mail

Free

No published plan breakdown. See the Proton Mail review.

SentinelOne

On request
  • Singularity Complete$179.99/year
    • Per endpoint pricing
    • AI-driven endpoint and cloud workload protection
    • Real-time threat detection and response
  • Singularity Commercial$229.99/year
    • Per endpoint pricing
    • All Complete features plus Identity Detection and Response
    • 90-day data retention
  • Singularity Enterprise$null/custom
    • Per endpoint pricing
    • All Commercial features plus Agentic AI SOC Analyst
    • Full Visibility and Forensics

Which should you pick?

Choose Proton Mail if

  • You want to start without paying.
Proton Mail review

Choose SentinelOne if

  • You need ai-powered detection.
  • You work on Windows, Macos, Linux, Ios, Android.
  • You also want autonomous response.
SentinelOne review

Questions people ask

Is Proton Mail or SentinelOne better?
Neither clearly leads. Proton Mail starts at Free and SentinelOne at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Proton Mail or SentinelOne?
Proton Mail has a free tier; the other does not. Paid plans start at Free for Proton Mail and On request for SentinelOne.
Does Proton Mail or SentinelOne run on more platforms?
Proton Mail runs on Web. SentinelOne runs on Windows, Macos, Linux, Ios, Android.
Can I use Proton Mail for free?
Yes. Proton Mail has a free tier, so you can try it without paying. SentinelOne starts at On request.
What is Proton Mail best used for?
Proton Mail is most often used for encrypted email communication, privacy-focused email service, family email protection. Of those, encrypted email communication and privacy-focused email service are not what SentinelOne is typically brought in for.
What can Proton Mail do that SentinelOne cannot?
SentinelOne covers AI-powered detection, Autonomous response, Behavioral threat intelligence, Root cause analysis.

Answered from the vendors’ own pages

Proton Mail: Is there a free version of Proton Mail?

Yes, Proton Mail offers a free plan with 1 GB storage, 1 encrypted email address, and basic features like folders, labels, and filters.

Source
SentinelOne: What is SentinelOne Singularity Complete pricing?

Singularity Complete costs $179.99 per endpoint per year and includes AI-driven endpoint and cloud workload protection, real-time threat detection and response, 14-day data retention, and AI Security Assistant. Pricing shown for 5-100 workstations.

Source
Proton Mail: What does the Mail Plus plan include?

Mail Plus includes 15 GB storage, 10 encrypted email addresses, support for 1 custom domain, 10 hide-my-email aliases, priority support, and access to Proton Calendar.

Source
SentinelOne: What features distinguish SentinelOne Commercial from Complete?

Singularity Commercial costs $229.99 per endpoint per year (versus $179.99 for Complete) and adds Identity Detection and Response, 90-day data retention (compared to 14-day), and Managed Threat Hunting services.

Source
Proton Mail: What is included in Proton Unlimited?

Proton Unlimited provides 500 GB storage, 15 email addresses, 3 custom domains, unlimited hide-my-email aliases, access to Mail, Calendar, VPN, Drive, and Pass, plus dedicated support.

Source
SentinelOne: How does partner pricing affect SentinelOne costs?

All SentinelOne purchases are made through authorized third-party partners, and partner pricing may differ from published rates. Customers should verify pricing with their authorized reseller.

Source
Proton Mail: Does Proton Mail offer a money-back guarantee?

Yes, Proton Mail provides a 30-day money-back guarantee for paid plans.

Source
SentinelOne: What does SentinelOne Enterprise include?

Singularity Enterprise (custom pricing, contact sales) adds Agentic AI SOC Analyst and Full Visibility and Forensics capabilities to all Commercial features, plus expert-led onboarding and training.

Source
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