Direct mail letters help you make a strong connection with your prospects and it can be your best Sales Person. Letters can appear more professional and offer more privacy than other types of direct mail, which helps you to build credibility and trust. Connect with customers and potential clients with a Custom Letter Mailer Campaign. Your direct mail letters get the word out about your business, advertise products and services, Try our mailing services for sizes with an 8-1/2” x 11” full-color, uncoated paper and a #10 closed-face envelope, Plus, a{BRM Envelopes } #9 reply envelope, letter personalization and envelope addressing with our mailing services.