A particular team needs to track individuals working on cases and the individual roles of the people working on cases. Which is the best way to do it?

Mass Mail Contacts option doesn't appear under the Tools section in the Contacts tab, what could have caused this?

Define the Marketing User Profile.

SFDC allows me to add a reporting hierarchy (or organization chart) to my contacts. This way I can better understand the structural dynamics within the businesses I am selling to, and remember who to contact for certain aspects of a sale.

What are the opportunity defaults when converting a lead to an opportunity?