Compare Proton Mail vs. black.com

Secure your company’s communications with Proton Mail — the business email solution trusted by over 50,000 organizations. With end-to-end encryption built in, your internal and external communications stay confidential by default. Proton Mail helps your business meet GDPR, HIPAA, and other compliance standards, while giving you full control over your data under strong Swiss privacy laws. Empower your team with encrypted email and calendar, support for your custom email domains, professional branding, and simple migration from providers like Google Workspace or Microsoft 365 — no IT team required.

Our email hosting service offers top-tier encryption for your communications, employing zero-access encryption methods such as AES-GCM-256 combined with RSA-OAEP-4096 for key sharing, ensuring that only you can access your email contents while we cannot retrieve them at any point. Every aspect of your email experience is safeguarded, including subjects, headers, message bodies, attachments, drafts, and even push notifications. Based in Austria, we are dedicated to exceptional data security and harness Swiss infrastructure, which allows us to operate under some of the strongest privacy laws globally, especially in contrast to many US tech firms. When you sign up, you receive an initial 25 GB of storage, with an additional 2 GB added to your account every year, ensuring that with regular use, you will always have ample space for your emails and attachments. As a result, you can communicate confidently, knowing your privacy is our utmost priority.