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.

Posteo is a German privacy-focused email provider that offers ad-free email with an emphasis on data minimization. It also provides calendar and address book features.

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.