The name of the game in direct marketing is getting mail opened.
Use commemorative stamps to make your direct mail campaigns stand out. They have the same price as that of the regular issue stamps.
Commemorative stamps create the perception that this piece of mail is very personal. For that reason, they usually end up on the very top of your prospects’ incoming mail. Using commemorative stamps increases the likelihood your prospects will see, open, and read your message.
Putting stamps on crooked will make your mailings stand out even more.
Another option, try using more than one stamp so your mail stands out even more.
Budget: Dependent on the quantity you are mailing and cost no more than a regular boring stamp.