European alternatives to Proton

Tutanota is a secure email service with a focus on encryption and privacy.

mailbox.org offers secure and ad-free email, cloud storage and office tools, focused on privacy.

Independent, ad-free email provider based in Berlin, emphasizing privacy, security, and sustainability.

StartMail provides private email services with a focus on security and anonymity.

Kolab Now offers secure and private email, calendar, and file sharing services, focusing on data privacy.

Norwegian email provider emphasizing privacy, security, and renewable energy.

Infomaniak provides a suite of services including email, hosting and cloud storage with a focus on privacy and sustainability.