This is what comes from trying too hard to look like a Real Business -- we saw all of the other companies with Marketing Departments using phrases like "Deep Email Integration" and assumed it was a good place to start. We don't have much traffic yet, but we have a split testing architecture in place to start playing with less ridiculous ways of expressing the same thing.
try and summarise what the purpose of the site in 20-30 words on the home page to de-clutter...more detail can be added in a FAQ type section