The service is absolutely free. That feature is not.
Local and offline desktop mail clients in 2023 are now niche features, especially when the service we are discussing gives you a super solid webUI and mobile apps (which also work offline). The rain why Protonmail has this as a paid feature is because only a small subset of it’s users even need this as a feature, and it requires a special network bridge to make possible.
The service is absolutely free. That feature is not.
Local and offline desktop mail clients in 2023 are now niche features, especially when the service we are discussing gives you a super solid webUI and mobile apps (which also work offline). The rain why Protonmail has this as a paid feature is because only a small subset of it’s users even need this as a feature, and it requires a special network bridge to make possible.