1. Baidu search for "Easy Letter", click the trusted link in the search results to download Easy Letter, or go to Easy Letter official website to download it. After downloading, install email on your mobile phone.

2. Open the email in the mobile phone, and the "Login" and "Register" buttons will be displayed in the main interface. Click the "Register" button, then enter your mobile phone number and click the "Next" button.

Wait a moment, and your mobile phone will receive a short message containing the verification code. Enter this verification code in the text box as shown in the figure, and then click the Next button.

4. Enter your nickname (not easy signal) and easy password in the next interface. Click the "Next" button after input, as shown in the figure. After that, you successfully completed the registration of Yixin.

5. Click on the top left corner of the interface, click the "Settings" option in the sidebar, and then select "Personal Information". Click "Easy Signal" under "Account Information", enter an easy signal (this time only), and click "Save".

6. After setting up the Easy Letter signal, you can log in to Easy Letter with the Easy Letter signal and password, or you can log in to Easy Letter with the mobile phone number and password.