Don’t overextend your target customers by sending your marketing messages at too short intervals. Choose appropriate cycles. Ensure that your messages are sent in a time- and target-group-oriented manner.
The better the content of your marketing messages is tailored to the wishes and needs of your target customer segments and the greater the perceived benefit of your marketing messages, the more likely your target groups are to read your messages.
Make your marketing messages graphically appealing as well. Not only the content but also the appearance influences the perceived appeal of your messages. Emails with combined HTML and text formats work well for this.
Write your messages in a personal style. Offer communication options that allow you to enter into a dialog with your target customers, and also accept dialog requests.