Thunderbird’s Desktop Calendar Visual Redesign

Thunderbird, a popular email client, has recently embarked on a journey to redesign its calendar feature. The calendar, a crucial component of any productivity tool, has been part of the application since early in its development, evolving over time. However, it has become outdated and convoluted, lacking modern UI standards and user-friendliness.

The design team, in collaboration with developers and the community, has set out to modernize and streamline the calendar. Their guiding principles include serving all users, not just experts or enthusiasts, and creating an experience that meets and exceeds expectations. This modernization effort aligns with Thunderbird's broader goals, competing with other major players like Google Calendar, Apple, and Microsoft, as well as targeted productivity apps.

The redesign process began several years ago, with several parallel initiatives (Mobile, Web, Accessibility). Initially, there were many partial designs without a clear vision. However, redesigning isolated elements like the Event Details dialog, the event editing dialog, and the notification for unanswered invitations provided a solid foundation. The team recognized the need for a unifying vision, leading to a lean design with three main sections: the grid, navigation bar, and sidebar.

The grid serves as the user's primary workspace, while the navigation bar and sidebar manage calendars and data sources. The final design includes a collapsible sidebar, allowing users to adjust its size based on their needs. Mock-ups of the week view and Month view in the main grid, along with the Create Event window, demonstrate the direction of the redesign.

Community feedback has been encouraging, with positive responses to the designs and valuable insights on important features like task integration, platform interoperability, and view re-assessment. Despite the progress made, the design team acknowledges that this is just the beginning of a longer journey, with further cycles of design and iteration planned to deliver a comprehensive toolset.