New in Tiki21, you can manage calendar invitations, powered by SabreDAV, and using Tiki Webmail. See also CalDAV. This development was done as part of Email as a first-class citizen.

Use Tiki Webmail, and if Tiki webmail detects an invitation, it will offer you to add to a calendar (can be personal calendar or shared calendar)

• https://en.wikipedia.org/wiki/ICalendar
• Manage calendar invitations via email (initial code commit)