Hi,
I'm an expert in marketing online. I can build that letter, but I must say that that is no enough, what you need is a good strategy and make a marketing campaign to reach your goals, that must be, gain new customers.
If you are interested for the price offered I can skype with you for an hour so we can plan together that strategy plan, apart of write down the letter.
A brief hint: the percentage of potential customers that accept the offer and convert themselves in your customers, through a marketing action via email, is around 7%. That means that if you send little amount of email to potential customers the odds will not be on your part.
If you are interested, hire me, you will not be disappointed.
Regards,
Rubén Aguilera.