SOGo offers multiple ways to access calendaring and messaging data. Your users can either use a web browser, Microsoft Outlook, Mozilla Thunderbird, Apple iCal, or a mobile device to access the same information.
SOGo is a highly interoperable solution due to its adoption and promotion of open standards. Among those, SOGo particularly focuses on: CalDAV: The Calendaring Extensions to WebDAV protocol is vastly popular among clients (Apple iCal, Mozilla Ligthning / Sunbird, etc.) and allows them to exchange calendar components with servers that support it. CardDAV: In its fourth revision, vCard Extensions to WebDAV is to address books / contacts what CalDAV is to calendaring. Less popular than CalDAV, it's nevertheless quickly gaining momentum and is used by the SOGo Connector extension. Mail protocols: For messaging, SOGo fully makes use of standard protocols such as IMAP and SMTP. Microsoft Exchange ActiveSync: The de facto standard for synchronization of email, contacts, events, and tasks with mobile devices that use Apple iOS, Android, Windows Phone or BlackBerry 10. Supporting open standards provides SOGo with extensive interoperability, scripting capabilities and more.