An MQL is one step higher than a lead, in terms of the level of engagement with your business. An MQL typically performs an activity, like downloading your ebook, which is a clear indication of their interest in your business. Sometimes an MQL can also be determined based on their demographic profile. MQLs are ready to be nurtured, but they’re not ready to buy just yet. They’re usually handed over by the marketing team to the sales team.
Sales leads are generated on the basis of demographic criteria such as FICO score (United States), income, age, household income, psychographic, etc. These leads are resold to multiple advertisers. Sales leads are typically followed up through phone calls by the sales force. Sales leads are commonly found in the mortgage, insurance and finance industries.