I need a marketing email written

I need a marketing email written that offers a specific service (audio transcription). But I don't want a bog standard business type one. I want something interesting and unique that stands out and that people want to read. More along the lines of a soft sales pitch rather than in your face selling. Needs to describe how hiring me for this service will benefit their business (I already have the benefits listed).
Doesn't need to be too long either but I'll leave that to the judgement of the writer. Probably no longer than a basic blog post (around 500 words) but dependant on the idea of the storyline for the email then it might naturally need to be a bit longer.
Basically I will give you info on the target market, the service I provide, and the benefits for their business. I just need someone to make it sound interesting and of value.