First attempt. When I think email campaigns - I think of clicking the mouse. The letter "u" in the word created a perfect canvas to create a mouse. 

2nd Attempt. This one worked better. The company is doing lead acquisition via email deployment. The target above the "n", when combined, looks like a person.The objective is to target prospects to get new leads. The negative space of the n and the target also form the letter "i" which would be the correct spelling of the word insightful.

A business card mock-up.