Updated October 13, 2026 · ShieldCue Editorial Team
Internxt Universal Technologies SL vs Proton Mail
Internxt Universal Technologies SL
Facts checked September 26, 2026.
What sets them apart
| Compare |  Internxt Universal Technologies SL |  Proton Mail |
|---|---|---|
| Price from | €9.99 | $4.99 |
| Free plan limits | 1 GB free encrypted cloud storage; Internxt Mail is only available with a premium plan | Unlimited logins, notes, credit cards and devices; 10 hide-my-email aliases; passkeys on all devices; no vault or item sharing |
| Platforms | Google Chrome extension on Windows and macOS | Windows, MacOS, Linux, Android, iOS, Web app, Command line interface, Chrome, Safari, Firefox, Edge, Brave |
| Logging policy | Zero-knowledge: passwords and user data are not stored, data encrypted in transit and at rest | No permanent IP logs by default; temporary IP logs kept to combat abuse and fraud; authentication logging off by default; Proton states it has no technical means to access encrypted passwords or notes |
| Jurisdiction | ES | CH |
Same on both: Free plan (Yes), Open source (Yes).
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Key differences
- Platforms: only Internxt Universal Technologies SL offers Google Chrome extension on Windows and macOS.
- Platforms: only Proton Mail offers Windows, MacOS, Linux.
- Support channels: only Internxt Universal Technologies SL offers Chat.
- Founded is lower at Proton Mail: 2014 vs 2020.
- Pricing model: only Proton Mail offers Budget.
Our verdict on each
Internxt Universal Technologies SL
Internxt Universal Technologies SL differs from trust based services by centering control with the user through zero knowledge encryption and open source review. It serves privacy minded people wanting encrypted storage and mail with a no logs approach under one account.
Proton Mail
Proton Mail suits readers who want a password manager that is open source, free to start and end-to-end encrypted on every field, metadata included. Support runs on email, help centre and community, and the budget plan starts at $4.99, while the group median monthly price is €6.47.
Score breakdown
| Area | Internxt Universal Technologies SL | Proton Mail |
|---|---|---|
| Cost | Not confirmed | 9.1 |
| Offer | 8.6 | 9.1Higher |
| Privacy | 8.6 | 8.9Higher |
Where each is licensed and available
| Country | Internxt Universal Technologies SL | Proton Mail |
|---|---|---|
| Headquarters | Spain | Switzerland |
Sources behind this comparison
Internxt Universal Technologies SL
- internxt.com: 11 facts, checked September 26, 2026
- chromewebstore.google.com: 1 fact, checked September 26, 2026
Proton Mail
- proton.me: 11 facts, checked September 26, 2026
- privacyjournal.net: 1 fact, checked September 26, 2026
How they place
| Ranking | Internxt Universal Technologies SL | Proton Mail |
|---|---|---|
| Privacy tools | 57 of 280 | 11 of 280 |
| Secure email and messaging | 11 of 60 | 2 of 60 |
Every fact side by side
| Fact | Internxt Universal Technologies SL | Proton Mail |
|---|---|---|
| Pricing model | Free | Free, BudgetCovers more |
| Legal entity | Internxt Universal Technologies SL | Proton AG |
| Headquarters | Spain | Switzerland |
| Founded | 2020 | 2014Lower |
| Support channels | Email, Chat, Help centre, CommunityCovers more | Email, Help centre, Community |
Secure email
| Fact | Internxt Universal Technologies SL | Proton Mail |
|---|---|---|
| End-to-end encryption | Emails and attachments in Internxt Mail are end-to-end encrypted with post-quantum and zero-knowledge encryption, so only the user can read them | All fields end-to-end encrypted: passwords, usernames, web addresses, credit cards, note contents and metadata; 256-bit AES-GCM vaults; only the user can decrypt, Proton cannot |
| Custom domains | Not confirmed | Yes |
Encrypted storage
| Fact | Internxt Universal Technologies SL | Proton Mail |
|---|---|---|
| Free storage | 1 | Not confirmed |
| Zero-knowledge encryption | Yes | Not confirmed |
| Compliance certifications | ISO 27001:2022, HIPAA, GDPR, SOC 2 | Not confirmed |
Pros and cons
Internxt Universal Technologies SL
Pros
- Zero knowledge design keeps passwords and stored content unreadable to others
- Open source code allows public review of privacy and security claims
- End to end encryption protects mail messages and file attachments
Proton Mail
Pros
- End-to-end encryption covers passwords, usernames, web addresses, credit cards, note contents and metadata, and only the user can decrypt.
- The client is open source, and by its logging policy the company has no technical means to reach encrypted passwords or notes.
- Paid entry is light: the budget plan starts at $4.99, and custom domains are supported.
Cons
- Support runs on email, help centre and community, with no phone line and no live chat in that list.
- The free plan limits leave out vault and item sharing, so a free account suits one person rather than a household.
- By its logging policy, temporary IP logs are kept to combat abuse and fraud, and authentication logging is off by default.
Who each suits
Internxt Universal Technologies SL
Who it suits
- People seeking zero knowledge storage and mail
- Shoppers valuing open source privacy tools
Proton Mail
Who it suits
- Readers who want open source, end-to-end encrypted storage with a free plan to start on.
- Single users on a budget: paid entry starts at $4.99 on the budget plan.
- Readers who want a named operator: Proton AG, founded in 2014 and under CH jurisdiction.
Who should look elsewhere
- Apple Hide My Email, which arrives inside iCloud+ rather than as a standalone vault and whose free plan limits leave it out of the entry iCloud plan.
- Apple Inc. for anyone shopping only inside the Apple ecosystem, since the free plan limits exclude Hide My Email from the entry iCloud plan.
- addy.io, whose free plan limits cap recipients, alias domains and monthly bandwidth, so it suits lighter alias use.
Current offers
Internxt Universal Technologies SL
Current offer
Discount code
Christmas savings - Save 80%: 80% off
Promotional banner applied on the deals and pricing pages; for new customers, free-account customers or lifetime-plan upgraders, no code shown
Source, checked September 26, 2026
Proton Mail
Current offer
Free trial
30-day money-back guarantee on Pass Plus and Proton Unlimited: 30 days
Applies to premium Pass Plus and Proton Unlimited plans; cancel and request refund within 30 days
Source, checked September 26, 2026
Discount code
Pass Plus discount on yearly plans: 40% off
Pass Plus annual billing
Source, checked September 26, 2026
Questions about each
Internxt Universal Technologies SL
What does Internxt Universal Technologies SL provide?+
Internxt Universal Technologies SL provides encrypted cloud storage plus encrypted mail with attachment support. Stored content receives encryption in transit and at rest under zero knowledge handling. A no logs approach keeps provider access away from user activity.
How does its encryption work?+
Emails and attachments receive end to end encryption with post quantum and zero knowledge protection. Passwords stay outside provider reach because decryption rests with the account holder. Stored files remain encrypted in transit and at rest.
Proton Mail
How much does Proton Mail cost?+
There is a free plan, and the budget plan starts at $4.99. For context, the median monthly price across secure email brands in this group is €6.47, and the median long-term rate is €4.67. Entry pricing sits below that group median.
Can Proton Mail read my passwords?+
No. End-to-end encryption covers passwords, usernames, web addresses, credit cards, note contents and metadata inside AES-GCM vaults, so only the user can decrypt. By its logging policy, Proton states it has no technical means to reach encrypted passwords or notes, and the client is open source under CH law.
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