Creative Square Envelope Printing for Invitations, Cards & Unique Mailers Square envelopes are a creative alternative to traditional mailing formats. Custom square envelopes immediately stand out in the mailbox, making them a popular choice for invitations, greeting cards, announcements, and promotional mailers. Their layout is ideal for creative artwork, elegant typography, and branded messaging that captures attention before the envelope is even opened. Available at PRINTOPACK with professional quality and fast turnaround.

PRINTOPACK, our square envelope printing service allows businesses, designers, and event planners to create memorable mail pieces that feel modern and intentional. Whether you're sending wedding invitations, holiday cards, or branded marketing materials, square envelopes add a unique look that helps your message stand out. Our easy online ordering website is built for easy checkout.