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Cybersecurity · head to head

Proton Mail vs Rock Solid

Proton Mail logo

Proton Mail

Cybersecurity

Secure email that protects your privacy

From
Free
Free plan
Yes
Full reviewWebsite
Rock Solid logo

Rock Solid

Government

Parks and Recreation Management

From
$350/month
Free plan
No
Full reviewWebsite

The short version

  • Only Proton Mail has a free tier, so it costs nothing to try first.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Proton Mail and Rock Solid actually diverge.

Attributes where Proton Mail and Rock Solid differ
AttributeProton MailRock Solid
Starting priceFree$350/month
Pricing modelfreemiumsubscription
Free tierYesNo
PlatformsWebWeb, Ios, Android
CategoryCybersecurityGovernment
FoundedUnknown2001

Identical on both: user rating (Not yet rated).

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 Rock Solid does not also cover.

Only in Rock Solid

  • Program Registration
  • Facility Scheduling
  • Membership Management
  • Payment Processing
  • Reporting & Analytics
  • Payment Gateways
  • QuickBooks
  • Marketing Tools

What people use each for

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

Proton Mail

  • Encrypted email communicationnot Rock Solid
  • Privacy-focused email servicenot Rock Solid
  • Family email protectionnot Rock Solid

Rock Solid

  • Citizen Servicesnot Proton Mail
  • Records Managementnot Proton Mail
  • Public Safetynot Proton Mail
  • Civic Engagementnot 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

Rock Solid

Nothing recorded yet. See the Rock Solid review.

Pricing, plan by plan

Proton Mail

Free

No published plan breakdown. See the Proton Mail review.

Rock Solid

$350/month
  • Recreation Management$350/month
    • Program Registration
    • Facility Scheduling
    • Payment Processing

Which should you pick?

Choose Proton Mail if

  • You want to start without paying.
Proton Mail review

Choose Rock Solid if

  • You need program registration.
  • You work on Web, Ios, Android.
  • You also want facility scheduling.
Rock Solid review

Questions people ask

Is Proton Mail or Rock Solid better?
Neither clearly leads. Proton Mail starts at Free and Rock Solid at $350/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Proton Mail or Rock Solid?
Proton Mail has a free tier; the other does not. Paid plans start at Free for Proton Mail and $350/month for Rock Solid.
Does Proton Mail or Rock Solid run on more platforms?
Proton Mail runs on Web. Rock Solid runs on Web, Ios, Android.
Can I use Proton Mail for free?
Yes. Proton Mail has a free tier, so you can try it without paying. Rock Solid starts at $350/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 Rock Solid is typically brought in for.
What can Proton Mail do that Rock Solid cannot?
Rock Solid covers Program Registration, Facility Scheduling, Membership Management, Payment Processing.

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
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
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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