In 2011 Yorba broke ground on a new email application for the GNOME desktop. Codenamed Geary, Yorba plans to bring to the open source community a new lightweight, easy-to-use, feature-rich email client. Our long-term vision for Geary is an email client built for daily use that can be used in place of or alongside Web-based email services. Features we're planning include:

Full IMAP support, making email synchronization a breeze
Tight integration with popular Web mail services, including Gmail, Yahoo! Mail, and Mobile Me
Full-featured WYSIWYG editor for composing emails
Threaded / conversation views
Lightning fast as-you-type email search
Desktop notification of new email
Support for multiple email accounts
Offline mode
Full support for popular IMAP servers, including Dovecot

For more information about planned features, see the Geary roadmap.