Looking for a reliable, well designed product that can support the following: 1. Multiple inboxes - gmails, emails, google groups 2. Knowledge base(s) 3. Teams 4. Features like - tagging conversations/notes, Internal Notes, Saved replies, Assign mails/messages 5. Can have customer data from our database 6. Integrates with live chat 7. Cost-effective (one that charges per user) reliable, well designed product