I Tested 4 x 6 Postcards: The Best Size for Affordable, High-Impact Marketing
When I think about the simplest way to make a message feel tangible, memorable, and easy to share, the 4 x 6 postcard immediately comes to mind. It’s a small format, but it carries a surprising amount of impact—whether I’m using it for marketing, invitations, announcements, or personal correspondence. There’s something appealing about its balance…
