Here is an example of a letter to position a request for an appointment as you requested.

Dear Name,
We can maximize your retirement income and help you reduce taxes at the same time with our pension maximizing plan.
I’ve enclosed a brochure outlining many of the features of this product. Many of your colleagues have found this product to be the right answer for their retirement needs. I look forward to meeting with you for a briefing and will be calling your shortly.
Very Sincerely yours,