Following Skiff's shutdown, users seeking decentralized email protocols can explore secure alternatives like Proton Mail, Tuta Mail, and Posteo. Proton Mail offers end-to-end encryption (E2EE), open-source code, and Swiss-based servers, prioritizing privacy. Tuta Mail combines AES and RSA encryption, encrypting metadata, and is adopting post-quantum cryptography. Posteo provides layered OpenPGP and S/MIME encryption, a no-logs policy, and anonymous payment options. Unlike Skiff’s IPFS-based decentralized storage, these providers focus on centralized servers with robust E2EE. Proton and Tuta offer free tiers, while Posteo starts at €1/month. Each supports IMAP/SMTP and two-factor authentication, ensuring strong security. For decentralized enthusiasts, self-hosted solutions exist but require technical expertise. Choose based on encryption strength, jurisdiction, and usability needs.