Imagine receiving one of the above envelopes in the mail amongst a bunch of boring white envelopes. Would you open it first?
Who wouldn't?! That's why these are important! If you do a lot of mailing, or plan to, this is a must have to really get attention at first sight. I personally can not wait to open mail when it is fun and the design automatically puts me in either an excited or relaxed mood. Curiosity gets the best of you, doesn't it always? That is why amazing designs are SO crucial to the success of your business!