Cypht
Unified Email Client for All Your Accounts
Cypht is a free, open source webmail client written in PHP and JavaScript under the LGPL v2.1. It combines multiple email accounts and RSS feeds into a single inbox rather than replacing the underlying accounts, supporting IMAP, SMTP, JMAP, and EWS protocols. It is positioned as a lightweight webmail option for ISPs, schools, businesses, and personal use.
Core capabilities include a combined inbox with unified unread, sent, and flagged views, cross-account search with boolean operators and saved searches, Sieve server-side filtering, tags and labels, IMAP folder sharing, and moving or copying messages between accounts. Profiles can pair IMAP accounts with SMTP accounts and configure signatures and reply-to details. Composing supports plain text, HTML, and Markdown. The module system extends functionality with modules such as IMAP, SMTP, LDAP, WordPress, and GitHub, and configurable keyboard shortcuts are available through a dedicated module. Authentication options include IMAP, LDAP, database, OAuth2 for Gmail and Outlook, and TOTP-based two-factor authentication. Encryption uses libsodium or AES-256-CBC, with TLS/STARTTLS for server connections and HTML filtering for incoming messages. Cypht is packaged as a Composer dependency within Tiki and is also available through Cloudron and YunoHost.
12 alternatives to Cypht
Ranked by how well each tool replaces Cypht: shared features, audience, price and popularity.
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