What is the email address and how to fill it in?

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Tutorial on filling in the email address: 1. The format of the email address is [username@domain name], where the username is the recipient's account and the domain name is the name of the recipient's email server; 2. Example [123456@qq. com] is an email address, where [123456] is the user name, [qq.com] is the domain name, etc. This topic provides you with relevant articles, downloads, and course content for you to download and experience for free.