Proton Mail Review
Verified plan prices, where the free tier stops, what end-to-end encryption covers, and three privacy-focused alternatives priced from their own pages.
Proton Mail is an end-to-end encrypted email service, and its free plan costs $0. Mail Plus is $3.99 a month billed yearly, and Proton Unlimited is $9.99 a month billed yearly ($119.88 a year). The free plan has real limits. It allows one address, 1 GB of storage and 150 messages a day, and Proton's pricing table lists IMAP and SMTP client access and custom domains on the paid plans only. Encryption is automatic between Proton accounts. A message to any other address needs a password-protected email or a PGP key to be end-to-end encrypted. Pick it if you want encrypted mail and a free start. Skip it if you need a desktop mail client on a free account or a team admin console.
Key factsBest for: Individuals who want encrypted mail with a free start and a…
- An end-to-end encrypted mailbox based in Switzerland, with a free plan that works for one person but no IMAP access.
- Free storage: 1 GB, one address, 150 messages a day
- Cheapest paid plan: Mail Plus, billed yearly, with IMAP access
- Encryption to outside addresses: Password-protected email or PGP key
- Company base: Plan-les-Ouates, Geneva, Switzerland
Pros
- Encryption is on every plan, including the free plan, with messages encrypted on your device before they reach Proton's servers.
- The free plan includes 10 hide-my-email aliases and 1 GB of storage.
- Unlimited adds a VPN, a password manager and encrypted cloud storage on one account.
Cons
- The free plan has no IMAP or SMTP client access and no custom domain, so a desktop mail app needs a paid plan.
- Mail to outside addresses is end-to-end encrypted only with a password-protected email or a PGP key.
- Proton's security page does not describe what metadata its servers can see, such as who you write to and when.
Proton Mail is the email product from Proton AG, based in Plan-les-Ouates near Geneva, which also runs Proton VPN, Proton Pass and Proton Drive. For a security reader the question is narrower than whether it is good email.
What does the encryption cover, what does the free plan leave out, and what do the paid plans cost in dollars once you read past the headline price? This review answers those three questions from the vendors' own pages.
Toolradar data: across 1,495 reviews on G2 and Trustpilot, Proton Mail averages 3.3 out of 5, and the two platforms split widely. G2 gives it 4.6 from 495 reviews, and Trustpilot gives it 2.2 from 1,000 reviews (last checked September 17, 2026).
A gap that size is worth reading past the average. Sort the recent Trustpilot reviews by complaint before you decide. Toolradar's page for the product is ProtonMail on Toolradar.
What is Proton Mail?
Proton Mail is a cloud email service with end-to-end encryption, sitting in the same Proton account as its calendar, drive, VPN and password manager. Proton's security page says messages are encrypted on your device before they reach its servers, so only you and the intended recipient can read them.
The detail a security buyer needs is the boundary. Between two Proton accounts, encryption is automatic. For any other address, Proton offers two routes. Password-protected emails let you send end-to-end encrypted mail to any address, and PGP encrypts a message to the recipient's public key when they have one.
Both are real protections, but neither is the default, and both depend on the other side taking a step. For encrypted storage rather than mail, see our encrypted cloud storage guide.
How Proton Mail works
Setup needs a Proton account and either an app or the web client. The free plan is enough to see how the product behaves day to day: one address, 1 GB of storage, 150 messages a day, 25 MB attachments and 10 hide-my-email aliases.
Proton lists three folders and three labels on that plan, against unlimited folders and labels on the paid plans.
Daily use is ordinary webmail, and the differences appear at the edges. By default, a message to a Gmail address does not use end-to-end encryption, and you add that with a password or a PGP key. The free plan also has no IMAP or SMTP client access, so a desktop mail app will not connect.
Mail Plus adds that access along with 15 GB of storage and 10 addresses, and it is the cheapest plan that does.
Proton Mail key features
Proton Mail pricing
Proton publishes its personal plans in US dollars on its pricing page. The free plan has no charge. Mail Plus is $4.99 a month billed month to month or $3.99 a month billed yearly ($47.88 a year). Proton Unlimited is $12.99 a month billed month to month or $9.99 a month billed yearly ($119.88 a year).
The page shows the yearly plans saving $12 on Mail Plus and $36 on Unlimited against monthly billing.
For one person paying yearly, the annual totals are $47.88 for Mail Plus, $59.88 for StartMail Personal, $60 for Fastmail Individual ($5 x 12) and $119.88 for Proton Unlimited ($9.99 x 12). Unlimited costs more, but it adds a VPN, a password manager and encrypted cloud storage on the same account, which the mail-only plans do not include.
Methodology: every price and plan limit comes from a vendor's own pricing page read on October 10, 2026: Proton Mail pricing, StartMail pricing and Fastmail pricing.
The ratings come from Toolradar's tool page, last checked September 17, 2026. Tuta publishes its paid plans in euros only (Tuta pricing), so we do not convert them. Prices change, so confirm them on the vendor page before you buy.
| Plan | Price | Best for |
|---|---|---|
| Proton Free | $0 | 1 GB, one address, 150 messages a day, 10 hide-my-email aliases, end-to-end encryption |
| Mail Plus, billed yearly | $3.99/mo billed yearly ($47.88/yr) | 15 GB, 10 addresses, 1 custom domain, IMAP and SMTP access |
| Mail Plus, billed monthly | $4.99/mo, billed month to month | Same plan on monthly billing |
| Proton Unlimited, billed yearly | $9.99/mo billed yearly ($119.88/yr) | 500 GB, 15 addresses, 3 custom domains, VPN, password manager and Drive |
| Proton Unlimited, billed monthly | $12.99/mo, billed month to month | Same bundle on monthly billing |
| StartMail Personal | $4.99/mo billed annually ($59.88/yr) | Encrypted email on a StartMail domain or one custom domain, 7-day trial |
| StartMail Business | $6.99/mo billed annually ($83.88/yr) | Encrypted email on your own domains for teams, 7-day trial |
| Fastmail Individual | $5/mo billed yearly ($60/yr) | Private inbox with contacts and calendars, 30-day free trial |
| Tuta Free | $0 | 1 GB storage, one calendar, 3 labels, fully encrypted |
| Tuta paid plans | Euros only, no USD price | Priced in euros on the vendor page |
Proton Mail pros and cons
What we like
- Encryption is on every plan, including the free plan, with messages encrypted on your device before they reach Proton's servers.
- The free plan includes 10 hide-my-email aliases and 1 GB of storage.
- Unlimited adds a VPN, a password manager and encrypted cloud storage on one account.
What could be better
- The free plan has no IMAP or SMTP client access and no custom domain, so a desktop mail app needs a paid plan.
- Mail to outside addresses is end-to-end encrypted only with a password-protected email or a PGP key.
- Proton's security page does not describe what metadata its servers can see, such as who you write to and when.
Who Proton Mail is for
Proton Mail suits a privacy-minded individual who wants encrypted mail with a free start, and anyone already paying for Proton's VPN or password manager, where the Unlimited bundle adds the most value.
Our reviews of Proton VPN and Proton Pass cover the other two products in that account.
It is a weaker fit for anyone who needs a desktop mail client on the free plan, more than one address, or more than one custom domain on a low budget. Mail Plus includes one custom domain and Unlimited three. Small teams should check the Business tab on Proton's own pricing page, because this review covers personal plans only.
Security leads who need every outside recipient protected should plan on password-protected emails or PGP for each one, since neither is automatic.
Toolradar's tool pages for StartMail, Fastmail and Tuta sit alongside the Proton page.
Best Proton Mail alternatives
If Proton Mail is not the right fit, these are the closest options.
| Tool | Best for | Starts at | |
|---|---|---|---|
| Proton Mail | Individuals who want encrypted mail with a free start and a bundle that adds a VPN and password manager. | Free plan | Visit → |
| StartMail | Privacy-minded individuals and small teams who want PGP and IMAP access on a custom domain. | Personal $4.99/mo billed annually | Visit → |
| Tuta | Readers who want a free, fully encrypted mailbox and can do without a paid plan to start. | Free plan with 1 GB | Visit → |
| Fastmail | Users who want a paid private inbox with contacts and calendars and a 30-day trial. | Individual $5/mo billed yearly ($60/yr) or $6/mo month to month | Visit → |
The bottom line
Proton Mail is the clearest pick here for one person who wants encrypted mail and a free start. The free plan costs nothing and keeps end-to-end encryption, and Mail Plus on yearly billing adds IMAP access and 15 GB. The bundle is worth it only if you already use Proton's VPN or password manager.
The catch is the boundary of the encryption. Encryption is automatic between Proton accounts, and mail to outside addresses needs a password or a PGP key. For tools that protect business email rather than personal mail, see our best email security tools guide.
StartMail is the closer match if you want PGP on a paid mailbox. Its Personal plan costs $59.88 a year billed annually, and its page lists PGP, password-protected emails and IMAP access. Tuta suits a free fully encrypted mailbox, but its paid prices are in euros only.
Fastmail is a paid private inbox, but its pricing page describes encryption in general terms rather than end-to-end encryption.
Cite this: Cyberpresso, "Proton Mail Review 2026: Pricing, Privacy and Limits", October 2026.
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