It is, of course, possible to send unsolicited email marketing messages, but this is only likely to annoy consumers and result in a damaged brand image. As a company that offers email marketing software, we strongly suggest that you don’t use purchased lists for your email marketing – the results you’ll see from growing your list and acquiring customers organically will lead for far stronger results.
When it comes to designing an email for a specific offer, the main component to keep in mind is the offer itself. You want the copy to be brief but descriptive enough to convey the offer's value. In addition, make sure your email's call-to-action (CTA) link is large, clear, and uses actionable language. You can also include a large CTA image/button underneath to make the action you want email readers to take crystal clear.