Set Proton Mail as a failsafe Not ready to make Proton your primary email provider? Set it up as a fallback solution to run alongside your current provider. Activate it in a crisis. Protect your business communications with easy-to-use encrypted email and calendar. Stay private, stay compliant. Everything your business needs to stay secure and productive Make your business truly yours Use your custom domain to create professional email addresses. Brand your mailbox, set catch-all addresses, and create groups to keep your team connected and organized. Easily manage your calendars Create calendars for teams, projects, or events. Share them and see when colleagues are available. With built-in appointment scheduling , clients can book time from your real-time availability. Automate and protect your inbox Filter out spam, set custom rules to sort or block messages, and automate forwarding and replies to keep communication flowing — even when you're away. Stay on top of your emails Schedule, undo, or snooze emails, and keep things organized with folders, labels, and filters. Add read receipts, expiry dates, or passwords to protect your messages. Write better emails, faster Save time and improve clarity when emailing clients, stakeholders, and team members using Proton Scribe, a privacy-first AI writing assistant. Integrate with other email clients Keep your team’s emails secure while using the apps they know. Proton Mail Bridge works with Outlook, Apple Mail, Thunderbird, and other IMAP/SMTP clients. Adjust access as needed Easily manage your organization's email users from a central admin panel. Adjust permissions, allocate storage, and customize settings — all in one place. Connect and sync across devices Stay connected across all devices with our encrypted email apps for web, mobile, and desktop, including Android, iPhone, macOS, Windows, and Linux. *Prices are based on independent market research and averaged across leading vendors in each category. Encrypted email for safer communications With over 90% of cyberattacks starting through emails, your choice of mail provider is a critical decision. Here’s a closer look at Proton Mail and how it ensures your business communications stay secure and compliant at all times. A secure foundation for business email Your emails stay private, always End-to-end encryption is at the core of the Proton ecosystem. Every email within Proton Mail is end-to-end encrypted to keep your team's conversations truly private and protect sensitive data from unauthorized access — not even we can read them. Protected by Swiss privacy laws Proton is based in Switzerland, so your business data is safe from US and EU surveillance and protected by some of the world's strongest privacy laws. We are legally prohibited from sharing user data, and since we can't decrypt your stored emails, there's little to share anyway. Driven by privacy from the start

Proton was founded by scientists who met at CERN, united by a vision of a privacy-first internet. Today, Proton Mail is the world’s largest encrypted email provider, trusted by over 100 million people and more than 100,000 businesses. Advanced protection against cyber threats Keep your business safe with Proton Sentinel, which helps identify and block attackers from breaking into your account. Add Proton Authenticator to secure every login with two-factor authentication. Your security doesn't rely on blind trust All Proton apps are open source , so anyone can inspect our codebase to verify our security claims. Regular third-party audits, including our ISO 27001 certification and SOC 2 Type II audit, confirm our security model meets the highest standards, ensuring your data stays protected. Comply with data protection laws Proton Mail helps your business meet GDPR , HIPAA , CCPA, and other privacy regulations with end-to-end encryption and zero-access architecture. Set organization-wide data retention rules to automatically keep or delete emails according to your policies — with different rules for different teams. Easily migrate your team to Proton Mail for Business With our Easy Switch tool, you can move your emails, labels, contacts, and calendars to Proton Mail in just a few clicks. Need help? Check out our business support hub or contact our team for assistance. Proton Workspace: the secure productivity suite Proton Workspace bundles Mail, Calendar, Drive, Docs, Sheets, Meet, VPN, Pass, and private AI into one encrypted suite — built for teams that need privacy by default. No ads, no data harvesting, no AI training. Trusted by over 100,000+ organizations worldwide Avocats Sans Frontieres Administration & IT Manager “The implementation of Proton Mail has allowed us to strengthen our security on our platforms and improve our cyber security knowledge. With Proton, we've been able to centralise our digital tools which has helped us reduce costs by 70%.” Regional Manager “That was probably another big reason I chose Proton — I knew [email deliverability] wouldn’t be as much of a problem.” United People Global “We use the best encrypted email service provider in the world. It is inspiring that more and more people are using Proton Mail and essentially saying, I am taking privacy more seriously.” CEO & Co-founder “Proton alleviated the privacy concerns we had with some of the other solutions out there.” Protect your business with encrypted email Frequently asked questions To create a business email address, start by signing up for a Proton Mail Essentials, or Proton Workspace plan. Once registered, set up your business email domain and configure your organization settings. Afterward, create user accounts for your team members and migrate any existing emails using the Easy Switch feature. A user is an individual account that belongs to your organization or group — someone who can access Proton's secure services under your organization's umbrella. The user's account settings can be configured by an administrator. An administrator holds full control over your organization's settings and management. They can add or remove users, change roles, and manage billing and storage allocations. It's possible to have one or more administrators. When creating company email accounts, administrators can set private or non-private users. With non-private users (the default setting), administrators can view and manage the emails and account settings of users. In contrast, the emails and data of private users are accessible only through their own login credentials. If administrative intervention is needed, the user must explicitly grant permission. Proton itself does not have access to the emails of any user in your organization, regardless of whether the account is private or non-private. Proton accepts credit and debit cards, PayPal, Bitcoin, cash, and bank transfers. You can switch to a different plan anytime from your Proton Account dashboard. If you need more storage space, simply add more users and reallocate that storage or upgrade to a plan that offers more storage. For large organizations, you can customize your storage with a Proton Enterprise plan by contacting our sales team .