Hostpoint E-Mail & Cloud Office is a Swiss-hosted mailbox and collaboration product from Hostpoint AG in Rapperswil-Jona. It is sold as a standalone e-mail package (a domain is required; web hosting is optional) and combines custom-domain mail with browser-based groupware.
It exists for individuals, freelancers, and Swiss SMEs that want branded mail and light office tools with mailboxes and data hosted in Switzerland. Mail uses IMAP/POP3/SMTP; calendars and contacts use CalDAV/CardDAV.
The concrete differentiator is that Open-Xchange Cloud Office stack (calendar, Drive, and higher-tier browser document editors) operated by a Swiss hoster since the groupware line began in 2008.