We've just started developing a new CRM system with SugarCRM. At the same time, I also want to replace our current POP3-based email system with something more substantial.

I've looked at the features in Scalix and Zimbra. They both have great webmail interfaces, which would allow staff to get to their mailboxes when out of the office.

Has anyone integrated any of these (or anything else worthwhile) into Sugar? From what I've seen, Sugar's email features are limited when compared to other mail clients.

Any comments greatly appreciated!