Copywriter for e Newsletters

Seeking a copywriter that specializes in and has a lot of experience with copywriting for e Newsletters. We will be using a company like [login to view URL] for example to send the e Newsletters. Newsletters will be emailed to opt in customers including the following categories: Architects, Landscapers, Interior Designers, General Contractors etc. The intent of each newsletter will vary - informative, persuasive, compare/contrast, sales oriented, product information an announcement, news etc. Each newsletter will have a specific goal or goals such as taking a survey, clicking to our website, specifying a specific type of product (architects), buying something, registering for something, a sale etc. Each newsletter could have one or more topics I am not sure how long each newsletter should be. I would need an e-Newsletter writers recommendation on this Please provide many samples of your prior customer newsletters either via email or on Guru as an attachment Excellent command of the English language is mandatory. Newsletters to be completed bi-weekly or monthly.......Undecided at this point Metrics will be provided to determine the success of each campaign Quote a fee PER newsletter.