This is a field with room for growth, and while the big players like Hallmark do tend to dominate the market, most of the country's more than 1,800 greeting card companies are small ones.

Envelope DL: 8.66 inches wide x 4.33 inches tall f. Custom: any size you like Most greeting card sizes are about 5 x 7 inches with an A7 (5.25 x 7.25-inch) envelope; about 4.5 x 6.125 inches (or 4 ...