Why doesn't Yixin invite friends to send text messages?

According to your description. E-mail is completely free, and there is no charge for using any function. Internet traffic charges generated by e-mail are charged by mobile phone network operators. I suggest you use it with the Internet traffic package.

Sending short messages is free. Even if the other party has no internet, the message can be delivered immediately. The other party can reply to the short message directly, and the reply content will be conveyed to you by email to ensure smooth communication.

In order to enhance the authenticity of inviting friends, at present, SMS is the main way to invite friends. The SMS fee for inviting friends is charged by the mobile phone network operator, which is consistent with the actual tariff of your mobile phone SMS package.

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Thank you for your interest in telecom products. I wish you a happy life. If you have any other questions, please come to Telecom Zhihu Platform or Telecom official website to ask questions, and more professional customer service will answer them for you.