This letter is to solicit new business from existing customers by identifying unmet needs they may have. Close the letter with a call to action (another phone call or face-to-face meeting).
1234, Main Street
Boston, MA 02123
08 April, 2005
<Recipient Address Goes Here>
Abc Company is pleased to have been of service to you in the past. We are committed to offering high-quality <types of products or services> and are always looking for new ways to meet our customers' needs. <Customer need.>
<Description of how you can meet the customer's need>
I'll call you <time> to <follow up>. If you'd like to reach me before that please feel free to call <phone number>. Thank you for your business and I look forward to working with you in the future.
encl: <List of enclosed items goes here>