We are using SugarCRM Pro versin 5.2 (soon upgraded to 6.0), hosted by Sugar in their UK datacenter. We have 5 users using Thunderbird on Ubuntu. E-mails are retrieved via IMAP and left on the server for 60 days… (Budget: $30-$250 USD, Jobs: CRM)
E-mail integration for SugarCRM by ocaeymaex