Make the impression long-lasting. Key factors to consider are keywords and phrases, graphics, colors, and fonts. If youre just a beginner at creating promotional mail, hire a reliable printing service that can guide you a bit more regarding what you can do to make your mail more effective.
Being personal. Some people just like to know others are taking time to get to know them better. You might just have to pamper some of them with personalized invitations and free offerings.