Proton Mail has shipped fully rebuilt mobile apps for iOS and Android. This isn’t a minor UI refresh. Proton says both clients were redesigned “from the ground up,” with roughly 80% of the code shared across the two platforms. That shared foundation is the real story: it’s how you get fewer platform-specific edge cases, more consistent behavior, and (in theory) faster, more even feature rollouts.
On the surface, the changes show up where most email apps win or lose: speed and everyday ergonomics. Navigation has been simplified, key buttons are easier to reach, and common actions like opening a message, replying, or archiving are quicker. It’s the kind of work that rarely makes for dramatic screenshots, but it’s what reduces friction for people who actually live in their inbox on mobile.
The biggest functional addition is offline mode. Users can read, compose, and organize email without a connection, and those changes sync automatically once the device is back online. Offline support is a deceptively hard feature to get right in email — it forces the client to manage local state cleanly, handle conflicts, and make syncing feel invisible. When it works, it’s one of the best indicators that a mobile client is being built for reliability, not just appearance.
The rebuild also aims at feature parity between iOS and Android. Both platforms now support the same set of “modern” email conveniences, including message snoozing, scheduled send, and smart notifications. That matters less as a checklist item and more as a signal that Proton wants mobile to feel like a first-class interface, not a companion app that trails the web experience.
Stepping back: Proton’s positioning hasn’t changed – privacy and security remain the headline values — but the product direction is clear. The new apps are trying to close the gap between “secure email” and “email that feels current,” without forcing users to choose between the two.
One practical note: the rollout is gradual, so some accounts/devices will see the update later than others.
For more details on how Proton Mail’s broader product evolution aligns with Gmail’s moves, see Gmail and Proton Mail Launch Competing Newsletter Management Features.
