How to change Proton Mail's notification sound on Mac
One new-mail sound; no per-folder tones on macOS.
The honest answer: Proton Mail only gives you basic on/off controls. Your real options are the macOS-level method below, or Chirpy if you want per-notification customization.
In Proton Mail
Head to Settings → Notifications inside Proton Mail — the sound options live there, and you can turn them off. That stops Proton Mail's own audio, but macOS will still play its default sound on top — see the universal approach below to silence that too.
Universal approach — mute at the macOS level
macOS lets you silence any app's sound without disabling its notifications. The full visual walkthrough lives on the universal macOS method page. The short version:
- Open System Settings → Notifications.
- Scroll to Proton Mail in the application list and click it.
- Turn off Play sound for notifications.
- Proton Mail keeps showing banners and badges — just no audio.

How Chirpy fills the gap
With Chirpy you can give Proton Mail's notifications a sound that matches their importance. For example: a quiet chime for routine updates, a louder bell for mentions, silence for the rest. All triggered by keywords in the notification text — no plugin, no API access required.
Want sounds that actually mean something?
Chirpy adds rule-based custom sounds on top of macOS notifications. One sound for Proton Mail mentions, another for your calendar, silence for the rest.