Proton Mail: Encrypted Email

What is Proton Mail?

Proton Mail is an email service that focuses on privacy and security. The Android app lets you access a Proton Mail account, create a new @proton.me or @protonmail.com address, and communicate with end‑to‑end encryption built into the client.

Main features

• End‑to‑end encryption – messages are encrypted on your device before they leave, and only the intended recipient can decrypt them.
• Multiple accounts – you can add and switch between several Proton Mail accounts without leaving the app.
• Secure attachments – files are encrypted alongside the email content.
• Folder and label organization – keep your inbox tidy with custom folders, labels, and swipe gestures.
• Dark mode – a system‑aware dark theme reduces eye strain in low‑light environments.
• Notifications – receive push notifications for new messages as they arrive.

How it works

The app generates encryption keys locally on your device. When you compose a message, the content and any attachments are encrypted before they are sent to Proton’s servers. Recipients who also use Proton Mail can read the message directly; non‑Proton recipients receive a password‑protected link that they can unlock with a shared password.

Practical uses

• Protecting personal correspondence from unwanted eyes.
• Sending confidential work documents without relying on corporate VPNs.
• Managing separate personal and professional email identities in one place.

Installation information

The app is distributed as a free download from the Google Play Store. After installation, you can either sign in with an existing Proton Mail account or create a new address directly within the app.

Things to know before installing

• The app requires an Android device with a recent version of the operating system; exact minimum version is listed on the Play Store page.
• While the core email functions are free, Proton offers paid plans that add extra storage and advanced features.
• Because encryption keys are stored locally, losing access to your device may require a recovery process using your account’s recovery email or phone number.

Who may find it useful?

Anyone who values privacy in their digital communications – journalists, activists, business professionals, or everyday users who simply want to keep their email content private – will benefit from Proton Mail’s approach.

Frequently asked questions

Do I need a Proton account to use the app?

Yes. The app works with Proton Mail accounts; you can create one during the onboarding process.

Can I send encrypted email to non‑Proton users?

Yes. The app can generate a password‑protected link that non‑Proton recipients can open with a shared password.

Is the app free?

The basic version is free to download and use. Optional paid plans provide additional storage and features.