Cypht is a webmail client which supports JMAP (and IMAP of course) that was added to Tiki Wiki CMS Groupware version 20.x, and continued to improve in successive versions of Tiki, now at Tiki 26.x.
Cypht can be used with any standard mail server. In the context of WikiSuite, Virtualmin provides standard email accounts.
Cypht is available as a standalone webmail client, and within Tiki, it gets additional features like calendaring (ex.: CalDAV). And over time, it will become feature-rich, as is the nature of Tiki's community and development model: Tiki is the Free / Libre / Open Source (FLOSS) Web application with the most built-in features. Please see https://dev.tiki.org/Email-as-a-first-class-citizen
Cypht has what you'd expect from a webmail client, and some very interesting features like aggregating email from multiple accounts.
Key Features
- Combined inbox, unread, sent, and flagged message views for all your E-mail accounts (and RSS feeds), as well as standard E-mail client folder navigation
- Flexible profiles to combined IMAP accounts with SMTP accounts and setup signatures and reply to details
- Compose messages in plain text, HTML, or Markdown (markdown formatted messages are converted to HTML before being sent)
- Search all your E-mail accounts and RSS feeds at once with a simple form
- Simple interface translation system that does not use gettext or .po files, just arrays of translated strings defined in PHP. Right to left languages are supported.
- Module sets for IMAP, SMTP, LDAP or local contacts, WordPress, Github, and lots more! Check out the Modules page for a complete list.
- Sessions and user data can be stored in any PDO compatible database or flat files on the server
- Authentication is flexible and currently supports IMAP, LDAP, an included database schema, dynamic authentication using popular E-mail providers, auto-discovery based on the user's E-mail domain, or you can roll your own with the site module set
- Sessions and Authentication can be customized without breaking any modules using the site module set