How to Find Out if a Yahoo Account Does Exist

by Dan Stone

You can check to see if a Yahoo account exists either by using the account name availability checker or by sending an email to the account name. Yahoo accounts may be deliberately deleted or disabled over time; old account names can be made available again for registration. Use the availability checker before sending a test email to the account to confirm whether it exists.

Registration Page

The Yahoo account signup page will automatically check to confirm whether a Yahoo address exists. To check any particular account name, enter the name in the "Yahoo username" field and click out of the box. If the box does nothing, then the account name is not registered and does not exist. If the box changes to red and displays the text "This username is not available," it means that the account name is registered and exists.

Bounce Email

You can check if a Yahoo account exists by sending an email to the related email address. If the account doesn't exist, Yahoo will bounce back an email containing a 554 deliver error message that confirms that there is no account registered to that user name. If the account exists, the email message will either go through or produce another bounce-back message saying the account mailbox is full.

About the Author

Dan Stone started writing professionally in 2006, specializing in education, technology and music. He is a web developer for a communications company and previously worked in television. Stone received a Bachelor of Arts in journalism and a Master of Arts in communication studies from Northern Illinois University.

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