Tau Mail

Tau Mail is an email service with webmail and native Android and iOS apps. Its site says messages are encrypted on the user’s device before they are sent, with keys held only by the user and recipient. Tau Mail also says it does not scan inboxes to build advertising profiles and advertises zero tracking. On-device spam detection and priority sorting are described as working without uploading message content. Webmail uses the same login as the mobile apps and requires no installation; the mobile apps include inbox sync, calendar, and contacts. The service supports custom domains with full DNS control. Its free plan includes 1 GB of encrypted storage and one custom alias. Pro costs $8 a month and includes 50 GB of encrypted storage, five custom domains, priority routing, and advanced filters. Business costs $16 a month and adds unlimited storage, a team admin console, audit trail exports, and dedicated support. The Android beta listing says push notifications sync inbox, calendar, and contacts with webmail. The iOS beta listing says remote push works while the app is open, with full background push available after APNs is configured.

Tau Mail combines email, calendar, and custom-domain support with encryption and inbox privacy claims. Plan limits and the iOS push configuration matter when comparing its free and paid options.

Tau Mail may suit people seeking email with device-side encryption, custom-domain support, and calendar access across mobile and web. Teams may consider the Business plan’s admin console and audit trail exports.