Mailbox.org is a German privacy-focused email and productivity service offering email, calendars, contacts, cloud storage, and office tools. It is designed around data protection and European privacy standards.

Mailcow is an open-source mail server suite that can be self-hosted. It combines email services and administration tools into a single platform for running your own mail infrastructure.

Proton Mail is an encrypted email service from Swiss company Proton. It focuses on privacy and security, with end-to-end encryption available for supported messages and features.

Runbox is a Norwegian email provider focused on privacy and sustainability. It offers email and related services without relying on an advertising-based business model.

StartMail is a privacy-focused email service from the team behind Startpage. It provides encrypted email features and is designed to reduce tracking and protect user privacy.

Tuta is a German privacy-focused email and calendar service. It uses end-to-end encryption for its services and is designed to minimize reliance on advertising and tracking.