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Cybersecurity · head to head

Proton Mail vs SentinelOne Singularity

Proton Mail logo

Proton Mail

Cybersecurity

Secure email that protects your privacy

From
Free
Rated
-
Full reviewWebsite
SentinelOne Singularity logo

SentinelOne Singularity

Cybersecurity

Autonomous AI-powered endpoint security

From
$5.83/month
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 Singularity deployment and configuration requires professional services ($5,000 to $25,000)
  • Prices and features above were last checked on 30 August 2026.

Where they differ

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

Attributes where Proton Mail and SentinelOne Singularity differ
AttributeProton MailSentinelOne Singularity
Starting priceFree$5.83/month
Pricing modelfreemiumUnknown
Free tierYesNo
PlatformsWebWindows, macOS, Linux, Cloud, Mobile
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 Singularity does not also cover.

Only in SentinelOne Singularity

  • Behavioral AI
  • Autonomous response
  • ActiveEDR
  • Storyline technology
  • Rollback remediation
  • Ranger IoT
  • Cloud workload protection
  • Identity security

What people use each for

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

Proton Mail

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

SentinelOne Singularity

  • Endpoint Securitynot Proton Mail
  • Edrnot Proton Mail
  • Xdrnot 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 Singularity

  • Deployment and configuration requires professional services ($5,000 to $25,000)
  • Optional modules like Ranger and Vigilance add to total cost of ownership
  • Complex pricing tiers make budgeting difficult for large deployments

Pricing, plan by plan

Proton Mail

Free

No published plan breakdown. See the Proton Mail review.

SentinelOne Singularity

$5.83/month
  • Singularity Core$5.83/month per endpoint
    • Endpoint Protection Platform (EPP)
    • Malware prevention
    • Threat isolation
  • Singularity Control$6.67/month per endpoint
    • All Core features
    • Device control
    • Firewall control
  • Singularity Complete$8.25/month per endpoint
    • All Control features
    • Endpoint Detection and Response
    • XDR capabilities
  • Singularity Commercial$17.5/month per endpoint
    • All Complete features
    • Identity protection
    • Cloud protection

Which should you pick?

Choose Proton Mail if

  • You want to start without paying.
Proton Mail review

Choose SentinelOne Singularity if

  • You need behavioral ai.
  • You work on Windows, macOS, Linux, Cloud, Mobile.
  • You also want autonomous response.
SentinelOne Singularity review

Questions people ask

Is Proton Mail or SentinelOne Singularity better?
Neither clearly leads. Proton Mail starts at Free and SentinelOne Singularity at $5.83/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Proton Mail or SentinelOne Singularity?
Proton Mail has a free tier; the other does not. Paid plans start at Free for Proton Mail and $5.83/month for SentinelOne Singularity.
Does Proton Mail or SentinelOne Singularity run on more platforms?
Proton Mail runs on Web. SentinelOne Singularity runs on Windows, macOS, Linux, Cloud, Mobile.
Can I use Proton Mail for free?
Yes. Proton Mail has a free tier, so you can try it without paying. SentinelOne Singularity starts at $5.83/month.
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 Singularity is typically brought in for.
What can Proton Mail do that SentinelOne Singularity cannot?
SentinelOne Singularity covers Behavioral AI, Autonomous response, ActiveEDR, Storyline technology.

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 Singularity: What does SentinelOne Singularity XDR cover?

Singularity XDR unifies detection and response across endpoints, cloud, identity, network, and mobile, providing centralized visibility and automated response across all attack surfaces.

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 Singularity: How does SentinelOne correlate data across security tools?

Singularity normalizes data from endpoints, identity, cloud, and third-party security tools into a unified data layer, enabling automatic correlation of signals without manual integration.

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 Singularity: Can SentinelOne integrate with existing security tools?

Yes, Singularity Marketplace provides pre-built, one-click integrations with email, network, firewall, and SaaS security tools, avoiding vendor lock-in while extending detection capabilities.

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 Singularity: What is the pricing model for SentinelOne Singularity?

SentinelOne pricing ranges from $5.83 to $17.50 per endpoint per month across five tiers, with optional add-on modules and enterprise pricing available on request.

Source
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