what is a self-addressed stamped envelope

what is a self-addressed stamped envelope What is a Self-Addressed Stamped Envelope Used For what is a self-addressed stamped envelope What is a Self-Addressed Stamped Envelope Used For,How to Use a Self-Addressed Stamped Envelope Correctly,Self-Addressed Stamped Envelope: What You Need to Know,List of Items to Include in a Self-Addressed Stamped Envelope,Why Use a Self-Addressed Stamped Envelope,Self-Addressed Stamped Envelope: A Quick Guide,Do You Really Need a Self-Addressed Stamped Envelope,Understanding the Purpose of a Self-Addressed Stamped Envelope,Common Uses for a Self-Addressed Stamped Envelope,The Importance of Using a Self-Addressed Stamped Envelope,