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Cybersecurity · head to head

Fenergo vs Proton Mail

Fenergo logo

Fenergo

Cybersecurity

Client lifecycle management and KYC onboarding for regulated financial institutions

From
On request
Rated
-
Full reviewWebsite
Proton Mail logo

Proton Mail

Cybersecurity

Secure email that protects your privacy

From
Free
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: Fenergo implementations commonly run twelve to twenty-four months and depend on a systems integrator, so the services cost frequently exceeds the software subscription in year one.; Proton Mail paid plan pricing not displayed on vendor site
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where Fenergo and Proton Mail differ
AttributeFenergoProton Mail
Starting priceOn requestFree
Pricing modelquotefreemium
Free tierNoYes

Identical on both: platforms (Web), 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 Fenergo

  • Regulatory rules library
  • Digital onboarding
  • Perpetual KYC
  • Entity data model
  • Screening orchestration
  • Case management

Only in Proton Mail

Nothing recorded that Fenergo does not also cover.

What people use each for

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

Fenergo

  • A bank operating in twenty jurisdictions that cannot keep local KYC requirements current across separate regional teamsnot Proton Mail
  • A custodian moving from calendar-based periodic review to event-driven perpetual KYC to cut analyst headcountnot Proton Mail
  • An asset manager onboarding funds and trusts where the ownership hierarchy defeats generic identity verification toolsnot Proton Mail
  • A payments institution facing a regulatory remediation order and needing a defensible audit trail of every client reviewnot Proton Mail

Proton Mail

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

Where each one falls short

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

Fenergo

  • Implementations commonly run twelve to twenty-four months and depend on a systems integrator, so the services cost frequently exceeds the software subscription in year one.
  • It orchestrates screening but does not supply the sanctions, PEP or adverse media data, so you still buy Dow Jones, LexisNexis or World-Check separately and those fees are per screened entity.
  • The entry price is set for institutions with large onboarding volumes, which puts it out of reach of smaller banks and fintechs that would otherwise benefit from the rules library.
  • Configuration is deep and specific, which makes upgrades between major versions a project rather than a patch, and some customers stay on old releases for years.
  • The rules library covers regulatory requirements, not your internal risk appetite, so the policy tuning that determines whether onboarding actually gets faster remains your work.

Proton Mail

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

Pricing, plan by plan

Fenergo

On request
  • Fenergo Client Lifecycle Management$undefined/year
    • Priced by institution size, jurisdictions in scope and modules licensed
    • Regulatory rules content subscription bundled into the annual fee
    • Implementation delivered by Fenergo or a systems integrator and quoted separately

Proton Mail

Free

No published plan breakdown. See the Proton Mail review.

Which should you pick?

Choose Fenergo if

  • You need regulatory rules library.
  • You also want digital onboarding.
Fenergo review

Choose Proton Mail if

  • You want to start without paying.
Proton Mail review

Questions people ask

Is Fenergo or Proton Mail better?
Neither clearly leads. Fenergo starts at On request and Proton Mail at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Fenergo or Proton Mail?
Proton Mail has a free tier; the other does not. Paid plans start at On request for Fenergo and Free for Proton Mail.
Does Fenergo or Proton Mail run on more platforms?
Both run on Web, so platform support will not decide this one for you.
Can I use Proton Mail for free?
Yes. Proton Mail has a free tier, so you can try it without paying. Fenergo starts at On request.
What is Fenergo best used for?
Fenergo is most often used for a bank operating in twenty jurisdictions that cannot keep local kyc requirements current across separate regional teams, a custodian moving from calendar-based periodic review to event-driven perpetual kyc to cut analyst headcount, an asset manager onboarding funds and trusts where the ownership hierarchy defeats generic identity verification tools, a payments institution facing a regulatory remediation order and needing a defensible audit trail of every client review. Of those, a bank operating in twenty jurisdictions that cannot keep local kyc requirements current across separate regional teams and a custodian moving from calendar-based periodic review to event-driven perpetual kyc to cut analyst headcount are not what Proton Mail is typically brought in for.
What can Fenergo do that Proton Mail cannot?
Fenergo covers Regulatory rules library, Digital onboarding, Perpetual KYC, Entity data model.

Answered from the vendors’ own pages

Fenergo: Does Fenergo do the sanctions screening itself?

No. It orchestrates calls to third-party data providers such as Dow Jones and World-Check, and those subscriptions are additional and usually charged per screened entity.

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
Fenergo: Is it SaaS or on-premises?

Both. The SaaS offering runs on Microsoft Azure with regional deployment options, which matters where data residency rules prohibit client data leaving the jurisdiction.

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
Fenergo: How long does a deployment take?

Plan for a year at minimum for a multi-jurisdiction rollout. Single-jurisdiction deployments with a narrow product set can be shorter but rarely under six months.

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

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

Source
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