Google
- Apointments, send from a Google calendar are recognized in I-MATH Zimbra.
- Zimbra calendar appointments are recognized by Google calendar.
- Remote Google calendar can be configured in the Zimbra Webinterace (but won't be exported to extenal apps - the external app needs to be configured to access Google calendar directly).
- Thunderbird can be configured to read/write to a Google calendar.
- Thunderbird can save incoming appointments to a Goolge calendar (with the restriction that the Google calendar is the only calendar in Thunderbird)