Proton Mail
Email service with end-to-end encryption that protects privacy by preventing message scanning and advertising use
- Also known as
- proton-mail
Available worldwide
What is Proton Mail?
A cloud-based email platform using end-to-end encryption to keep all messages private from Proton and advertisers, funded by subscriber revenue. It provides a permanent free tier with core email functionality, plus paid plans offering enhanced storage, custom domains, and integrated business services.
Proton Mail pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Free tier available. Paid plans starting at $12.99/user/month for business bundles.
Free
FreeBasic email functionality with the same encryption and security as paid plans
- End-to-end encryption
- Email and calendar access
Workspace Standard
All Proton products bundled including email, storage, VPN, and collaboration tools for teams
- storage
- 1 TB per user
- calendars
- 25
- custom_domains
- 15
- 1 TB cloud storage
- 15 custom email domains
- VPN access for 10 devices
- 25 booking pages
- Password manager
- Collaborative document editing
What Proton Mail does
The capabilities that matter for email clients, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Deployment model
- Cloud synchronization proxy
- Universal imap smtp exchange support
- ✓
- Keyboard shortcut only navigation speed
- ✗
- Split inbox AI auto categorization
- ✗
- Read receipts and open tracking
- ✗
- Snooze and scheduled send later
- ✓
- Generative AI LLM email drafting
- ✓
- Conversational chat layout view
- ✗
- Unified multi account inbox view
- ✓
- Pgp end to end encryption support
- ✓
- SOC2 type ii
- ✓
- ISO 27001
- ✓
- Pricing model
- Freemium
Platform & deployment
Independently observed- CLI
- iOS
- macOS
- Web
- Linux
- Android
- Windows
- Cloud / SaaS
Integrations (14)
Independently observed- Yahoo Mail←
- Gmail
- Outlook
- Yahoo
- Apple Mail
- Thunderbird
- Okta
- Microsoft Entra ID
- ADFS
- Edugain
- SimpleLogin
- Chrome⇄
- Firefox⇄
Security & compliance
Independently observed- ISO 27001active
Proton Mail FAQ
Common questions about Proton Mail, answered from independent, dated evidence.
What is Proton Mail?
An email platform using zero-access encryption so the provider cannot read messages, funded by subscriptions rather than data exploitation. It is indexed under Email Clients.
Is Proton Mail free?
Proton Mail offers a free tier, so you can start without paying. Paid plans are also available: Pass Essentials, Pass Professional, VPN and Pass Professional and Workspace Standard. Pricing changes often, so verify at source before relying on it.
What platforms does Proton Mail support?
Proton Mail supports the web, Windows, macOS, Linux, iOS, Android and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Can Proton Mail be self-hosted?
We have only confirmed a cloud / SaaS deployment for Proton Mail, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.
What does Proton Mail integrate with?
We have confirmed 11 integrations for Proton Mail, including Gmail, Outlook, Yahoo, Apple Mail, Thunderbird, Google, Okta and Microsoft Entra ID, plus 3 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.
What security certifications does Proton Mail have?
We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Proton Mail. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Proton Mail not holding them. Always confirm compliance directly before you rely on it.
Where is Proton Mail available?
Proton Mail is available worldwide. Its primary markets are the EU, the United States and the United Kingdom. The vendor is headquartered in Switzerland.
Proton Mail alternatives
Other email clients we track, ranked by the same independent score.
- SuperhumanAn integrated suite combining email, writing assistance, document collaboration, and AI agents that work across your existing applicationsmedium · 73%
- Canary MailAn email client that adds end-to-end encryption, phishing protection, and tracker blocking to your existing email accountshigh · 75%
- SpikeUnified email and messaging platform for team collaborationlow · 49%
- MailspringAn open-source, lightweight email application for Windows, Mac, and Linux with a focus on efficiency and local processingmedium · 65%
- MimestreammacOS email application for managing multiple Google accounts across devicesmedium · 54%
- Spark MailAn intelligent email client that filters distractions so you can focus on priority messagesmedium · 74%
Compare Proton Mail
Side by side against other email clients, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Proton Mail, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Pricing transparency | 100 | 0.08 | 8.4 | ✓ |
| Security posture | 95 | 0.06 | 6.0 | ✓ |
| Price level | 80 | 0.05 | 4.2 | ✓ |
| Capabilities | 87 | 0.04 | 3.4 | ✓ |
| Reliability | 48 | 0.06 | 3.0 | ✓ |
| Integrations | 26 | 0.05 | 1.2 | ✓ |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 7 items | mediumsource · 2026-09-10 · 64% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Iso 27001: Yes · Soc2 type ii: Yes · Pricing model: freemium · Deployment model: cloud_synchronization_proxy · Conversational chat layout view: No · Read receipts and open tracking: No | mediumsource · 2026-10-12 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 7 | mediumsource · 2026-10-12 · 60% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-10-12 · 75% |
Pricing
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Sla pct | 99.95 | mediumsource · 2026-10-12 · 60% |
Security
| Attribute | Value | Evidence |
|---|---|---|
| Iso27001 | Yes | mediumsource · 2026-10-12 · 60% |
| Gdpr | Yes | mediumsource · 2026-10-12 · 60% |
| Hipaa | Yes | mediumsource · 2026-10-12 · 60% |
| Pci | Yes | highsource · 2026-09-09 · 75% |
| Certifications | ISO 27001 | mediumsource · 2026-10-12 · 60% |
| Soc2 | Yes | highsource · 2026-09-09 · 75% |
| Trust center | https://proton.me/nb/business/mail/security | mediumsource · 2026-09-09 · 60% |
Is Proton Mail the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Proton Mail against the rest of the email clients we index, using the same dated evidence weighted your way.
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