What I like most is obviously the end-to-end encryption and the ability to set sensitive emails to expire. It is simple to use and I use it all the time. There is no implementation, just log in or use the app.

✅ Transparent, privacy-first design with 100 percent open-source apps and independent audits that let me verify client-side behavior and security posture directly. ✅ Strong cryptography defaults, with full-tunnel encryption using AES-256 or ChaCha20 and perfect forward secrecy to protect session confidentiality over time. ✅ Centralized admin control panel that consolidates user management, policy enforcement, and monitoring into a single interface suitable for IT operations. ✅ Granular access controls including Private Gateways, dedicated servers, and per-team segmentation so I can scope access to specific resources and reduce lateral movement risk. ✅ SSO and SCIM provisioning to align identity lifecycle with our IdP, minimize manual onboarding, and enforce consistent authentication policies across the org. ✅ Enforced 2FA and a built-in kill switch to reduce account takeover risk and prevent IP/DNS exposure during connectivity interruptions. ✅ Global server footprint with over 13,000 servers in 120 plus countries, improving coverage, latency options, and geo-specific routing for distributed teams. ✅ Dedicated IPs and dedicated servers that provide static addressing, deterministic egress, and better allowlisting with partner systems and firewalls. ✅ 10 Gbps-class performance targets plus a VPN Accelerator and Smart Protocol to maintain throughput and resilience on poor or restricted networks. ✅ NetShield DNS filtering for ad, tracker, and malware blocking at the resolver layer, adding lightweight protection without extra endpoint agents. ✅ Always-on 24/7 business support and straightforward deployment without hardware dependencies, which reduces lead time for rollouts. ✅ Switzerland-based jurisdiction and explicit no-logs position paired with open-source transparency, aligning with strict privacy expectations and legal risk reduction. ✅ Compliance alignment messaging and ISO 27001 certification context that map to GDPR, HIPAA, SOC 2, PCI, and similar frameworks for audit narratives. ✅ Cross-platform coverage with native clients on Windows, macOS, Linux, iOS, Android, plus browser extensions to standardize the fleet regardless of device mix. ✅ Real-time activity and gateway monitoring that surfaces sign-in attempts, device info, server connections, and timestamps for operational visibility and incident validation.

• End-to-end encryption protects filenames, folder structure, and file content before anything leaves the device. The cryptographic design is open source and documented, with third-party audits published regularly . • Zero-knowledge architecture means Proton staff cannot decrypt data. Two-factor authentication and device/session logs add another layer of account security . • Cross-platform coverage is solid: web, iOS, Android, and a native Windows sync client with on-demand file placeholders. Mobile apps support automatic photo backup and biometric unlock . • Granular link sharing lets me set passwords and expiration dates, keeping the encryption intact while sharing large files or whole folders without size limits . • Integrated Docs editor (in beta) enables real-time collaboration on Markdown-style documents inside the encrypted vault—handy for quick notes or drafts without leaving the ecosystem . • Unified Proton ecosystem: one subscription also unlocks Mail, VPN, Calendar, and Pass. Bundled pricing feels efficient when I already rely on multiple Proton services . • Swiss jurisdiction offers strong data-protection laws, reinforcing the privacy stance beyond the technical measures .