MQL is the acronym for Marketing Qualified Lead
In the SalesLeap process we define an MQL as a lead that received outbound messaging from you and has engaged with it in some shape or fashion. Engagement can be considered opening and/or clicking a link in one of the emails.
As part of the Marketing Funnel that is created you will have MQL Emails. These are the emails that are dripped out after a lead has opened or clicked on one or both of the General Activation Emails. Generally you will have 5 total MQL emails in your workflow but you can add additional emails if you desire.