Electronic communication systems are faster, cheaper, and simply more efficient than traditional methods.
Two great examples are email and SMS. While you can’t send them to anyone because of anti-spam legislation, that doesn’t mean they’re not an effective marketing tool when touching base with customers who opt to receive messages. When used in combination with detailed information about customers’ preferences and buying habits to provide a tailored offer, email and SMS can be very powerful indeed.
Keep in mind, however, that it’s vital you send communications that are relevant to a particular customer. By increasing customer satisfaction, you’re reducing the chances of them choosing to ‘opt out’.