Proton Mail vs Thelemail

Proton Mail is an encrypted email service available on the web, Windows, macOS, Linux, iOS, and Android. Its free plan lists 1 GB of storage and one email address, although its FAQ says storage starts at 500 MB; the free tier is described as having the same security level as paid plans. The service uses end-to-end and zero-access encryption, with open-source apps and independent audits. It blocks email trackers and includes phishing and spam protection, password-protected messages, and link confirmation. Users can schedule, undo, or snooze emails and organize messages with folders, labels, and categories. Easy Switch imports email, calendars, and contacts from other providers. Paid plans support external email clients through IMAP and SMTP using Proton Mail Bridge. Mail Plus lists 15 GB of storage, 10 extra email addresses, and one custom domain. Paid subscriptions include a 30-day money-back guarantee, and the desktop app has a 14-day free trial. Paid plans display monthly billing; the listed starting price is 3.99 /user/mo.

Thelemail provides private email hosting for individuals, families, and small teams, including people with custom domains. Mail between Thelemail accounts is encrypted on the sender’s device and decrypted on the recipient’s device; stored mailbox content is ciphertext protected by a random key the server does not hold. For outbound mail, it uses WKD/OpenPGP when the recipient publishes a compatible key, or standard SMTP with TLS where supported. Custom-domain setup verifies ownership and prepares SPF, DKIM, and DMARC before incoming mail is moved. Core mail processing and encrypted mailbox storage are hosted in the EU. The service includes TOTP and WebAuthn two-factor authentication. Its production browser and macOS clients, key transparency log, and local export tool are published under AGPL-3.0; the export tool decrypts mail locally into MBOX files. Apps are listed for Android and iOS. Free plans are available; paid plans start at €2 / month, billed annually. Standard IMAP/SMTP access and a local bridge are not currently available, and Thelemail has not completed an independent security audit or formal compliance certification.