The current iOS notification sound is the generic iOS notification sound. Allowing users to choose their own notification sound, or at least adding a unique one to the app, would prevent ProtonMail notifications being mistaken for lower-priority notifications from other apps. I know this is probably a lower-priority request itself, but I think it would be very useful to users, nonetheless.
Anonymous
The current iOS notification sound is the generic iOS notification sound. Allowing users to choose their own notification sound, or at least adding a unique one to the app, would prevent ProtonMail notifications being mistaken for lower-priority notifications from other apps. I know this is probably a lower-priority request itself, but I think it would be very useful to users, nonetheless.