12x9 envelopes with horizontal flaps are popular envelope sizes for mailing calendars, 8.5x11 catalogs or booklets, 8.5x11 documents, or mailing multiple inserts such as brochures, rack cards, and other marketing materials. They are also the largest standard envelope size offered by printers providing you with a large canvas to really get creative.

To make your 12x9 landscape envelope stand out, you need to make sure to include high-quality images and design elements, a color palette that aligns with your brand, your logo, and your design needs to reflect and the contents that will be inserted inside. For example, if you’re mailing a custom promotional calendar to your customers, your envelope design should have the same theme as your calendar. However, if you’re sending your annual report to shareholders, your envelope should include your logo and other branded elements and a design that aligns with your annual report’s design.

To help create an effective 12x9 envelope, make sure to use a 12x9 envelope design template available in several formats above. Our templates include guidelines for you to follow to ensure your envelope is printed at the highest quality.

If you need any assistance with your 12x9 envelope design or have questions about our 12x9 landscape envelope design template, don’t hesitate to call us at 800-707-9903 or head to our design services page to request design help today!