GDPR-Compliant Alternative to Outlook

Proton Mail

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by Proton

5.0 (1)

Proton Mail is an end-to-end encrypted email service founded in 2013 at CERN by scientists Andy Yen, Jason Stockman, and Wei Sun. Headquartered in Geneva, Switzerland, it uses zero-access encryption — meaning Proton itself cannot read your emails. All infrastructure is located in Switzerland (including a former military bunker under 1,000 meters of granite). Proton Mail is open source, independently audited, and serves 100+ million users across Proton's ecosystem.

Tuta Mail

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by Tutao GmbH

Tuta Mail is a secure email service designed with privacy at its core, offering end-to-end encryption to ensure that your communications remain confidential. Hosted on EU servers, Tuta Mail adheres to GDPR standards, providing users with peace of mind regarding data privacy and compliance. With a zero-knowledge architecture, Tuta Mail ensures that only you can access your data, not even the service providers. This email service is ideal for individuals and businesses who prioritize privacy and data protection. Tuta Mail allows anonymous registration, requiring no personal data, and supports custom domains, making it a versatile choice for businesses. The open-source email client also includes built-in spam protection features, ensuring a seamless and secure email experience. Tuta Mail's pricing model offers various plans to cater to both personal and business needs, ensuring flexibility and affordability. By choosing Tuta Mail, users benefit from the robust privacy and security measures that come with EU-hosted data, making it a reliable choice for those who value data sovereignty.

Posteo

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by Posteo

Posteo is a European email service provider that prioritizes privacy, security, and sustainability. It offers an ad-free email experience powered entirely by renewable energy, ensuring an eco-friendly communication solution. Users can enjoy the peace of mind that comes with Posteo's commitment to GDPR compliance and secure data storage within the EU. Key features include an anonymous sign-up process, end-to-end encryption options, and support for two-factor authentication, making it a robust choice for privacy-conscious individuals and organizations. Posteo also supports custom domain hosting, catering to both personal and business users who require a professional email setup. The service is ideal for those who value data sovereignty and wish to keep their information protected under stringent European data protection laws. Posteo operates on a straightforward pricing model, offering a subscription-based service without the intrusion of advertisements. This ensures that users receive a clean, focused email experience without compromising their privacy.

Infomaniak kMail

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by Infomaniak

Infomaniak kMail is a professional email service from Geneva-based Infomaniak, offering 20 GB per mailbox with custom domain support, integrated calendar, contacts, and video conferencing (kMeet). It includes advanced anti-spam filtering, two-factor authentication, and full GDPR compliance with data stored exclusively in Swiss data centers. Available as part of kSuite or as a standalone service.

GMX Email

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by 1&1 Mail & Media Applications SE

GMX (Global Mail eXchange) has been providing free email since 1997, making it one of Europe's oldest webmail platforms. Headquartered in Montabaur, Germany and operated by 1&1 Mail & Media Applications SE under the United Internet AG umbrella, GMX serves approximately 20 million active users. The free tier includes a generous 65 GB of email storage — far exceeding most competitors — while premium plans add up to 250 GB cloud storage and remove advertisements.

IONOS

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by IONOS

IONOS offers a comprehensive email service tailored for businesses and individuals seeking reliable and secure communication solutions. With GDPR-compliant email hosting, IONOS ensures that your data is managed with the utmost respect for privacy and security, adhering to stringent EU regulations. Users can create custom domain email addresses, enhancing their professional image and brand identity. The service includes an integrated calendar and contacts feature, facilitating seamless organization and communication. Advanced spam protection filters help maintain a clean inbox, while email encryption options provide an additional layer of security. IONOS is ideal for European businesses, freelancers, and anyone who values data sovereignty and privacy. The service supports multi-device synchronization, ensuring you have access to your emails, calendar, and contacts anytime, anywhere. The user-friendly webmail interface makes it easy to manage your communications, while robust storage capacity ensures you never run out of space. Pricing is structured to accommodate various needs, with options that cater to both small businesses and larger enterprises. By hosting data within the EU, IONOS guarantees compliance with local data protection laws, offering peace of mind to users concerned about privacy and data security.

Runbox

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by Runbox Solutions AS

Runbox has been providing privacy-focused email from Norway since 2000, making it one of Europe's longest-running independent email services. In 2011, key personnel bought out the original parent company and formed Runbox Solutions AS, which is majority employee-owned. All servers run on 100% certified renewable energy from Norwegian hydroelectricity, operating under Norway's strong consumer and privacy protections as an EEA member state.

Kolab Now

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by Apheleia IT AG

Kolab Now launched in 2013 as a public service built on the open-source Kolab groupware platform, operated by Apheleia IT AG (formerly Kolab Systems AG) from Bern, Switzerland. It provides a full groupware suite — email, calendars, contacts, tasks, notes, and file storage — hosted entirely in Switzerland under Swiss privacy law. The company is a founding contributor to Collabora Online and champions software freedom as a core principle.

eclipso

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by eclipso Mail Europe

eclipso is a privacy-focused email and cloud provider founded in 2016 by Claus-Peter Beringer in Bayreuth, Germany. It operates as a unified communications platform primarily targeting the DACH region (Germany, Austria, Switzerland), offering email, cloud storage, calendar, contacts, and integrated fax/SMS. All server infrastructure runs on 100% renewable green energy, and the service uses a prepaid model with no auto-renewal subscriptions.