If the telecommunications user is an old customer, write the following copy:

1. Thank you: Express your gratitude at the beginning of the email and thank the old customers for their trust and support of the telecommunications company.

2. Service advantages: Emphasize the long history, advanced technology and excellent service team of the telecommunications company, so that old customers can feel that they have chosen a reliable and professional service provider.

3. Personalized services: Remind old customers that their needs and situations may be different from new customers, and telecommunications companies need to provide personalized services. For example, there may be special packages that are more suitable for existing customers, or they may want different features and services.

4. Feedback activities: Call on old customers to participate in telecom companies’ feedback activities, such as recommending more customers to join Telecom, sharing their own service experiences, etc. Give old customers certain rewards and benefits to express your gratitude to them.