PrintMagic Also Avail Design Services for Self Seal Strip Envelopes and by adding it to the above calculator. Send us your required full specifications and we’ll create the custom design from scratch, very unique, and by matching your needs and for brand messaging. Once you approve the custom design, we will get them printed and will deliver them to your doorstep! If you are looking for designing a self stick envelopes on your own, choose from our predefined print layout templates available in formats like PDF, AI, InDesign and Photoshop. These layouts are with perfect bleed and will guide you in creating an envelope and with your specific design requirements.