Use this email banner image template for Substack to hook your newletter readers in their inbox. This template is optimized for the recommended Substack banner size at 1100x220 pixels. Customize your Substack email banner to fit your own newsletter using your desired font, drop shadows, color picker, and a vast library of copyright-free images and illustrations. You can also upload your own images directly from your device and make a transparent background by deleting the background image. Once you're satisfied with your Substack banner image, download as a JPEG and upload to your newsletter!