Custom Return Address Stamp - Personalized Address Stamp Custom Return Address Stamp - Personalized Address Stamp Please click "Customize Now" on the right to customize your personalized return address stamp. Custom Return Address Stamp is self inking. Impression can last for up to one thousand impressions before being re-inked. Custom Address Stamp impression is approximately 1" x 2.5". Default color is BLACK unless otherwise stated in Customization. All stamps are made to order. Most orders ship within 24 business hours.