I appreciate that your intentions are good, but I think going that far is risky (except maybe in some specific cases/industries)...if you're going that far out

I appreciate that your intentions are good, but I think going that far is risky (except maybe in some specific cases/industries)...if you're going that far out of your way (and yes, in this day and age a written letter is going out of your way), it could very well strike someone as brown-nosing. not to mention it can be hard to convey 100% sincerity in written form. maybe I'm just a cynic...