Phone numbers change as much as email ids do, and sometimes even more frequently. To stay updated about your customers, you need to have a Phone Append process. Sterling Marketing Solutions LLC provides services to ensure that phone numbers that were provided are still active and in use. Being a pioneer in Phone Appending, match rates here are the highest in the industry and the service gives you accuracy, consistency, and credibility in your data. Sterling Marketing Solutions LLC is sure to improve your ROI by a substantial margin.Our match rates are the highest in the industry and provide you with accuracy, consistency and credible data. Sterling Marketing Solutions LLC is a pioneer in phone appending and incorporating it into your marketing strategy will give you better ROI.