I've had better success mailing postcards in the envelope myself (rainbow color) hand written address.Also it takes longer for the person to receive a postcard not mailed in an envelope.

One of the mail fulfillment companies I use let's you send the letter in pretty much any color you want to use.Anyway, would love to hear what others have to say!

QuestionDoes anyone have any input on whether a full-color post card is any better than the simple one-color ink postcards I've seen?

It is difficult for design because people of all ages 20,30,40,50,60,70 etc. use technology differently and like various likes and uses for websites.Like under website in signature could have.Who I am : Then here have boxes that say in different colors with letters reversed out.                 

(It still worked; was just switching it out for a different color.)

Invitation style envelopes, hand written fonts and colored blue might get your mail opened more, but will it increase the QUALITY of your leads?

Finally, I use a custom color that makes it look like blue ink - 0/35/102 in MS Word (Thanks to Jerry Puckett for that recommendation).

However, personally the ones/people that are most memorable are those with the unorthodox shape, color, message.Occasionally I'll run across someone who hands me a card that is round, is a bi-fold, or has a bold call-to-action on it that drives me to their website, or something simular.

Your colorful language and story telling combined with your marketing skills would be killer.

I have only seen examples with red lettering and was wondering if anyone has used any other colored font.