Learn About Two-Factor Authentication for Your Kindle Library

Two-factor authentication is a security step that helps ensure you only receive documents from sources you trust.

Need to update Personal Document Settings? This and many other options are available on:

When you send a document to your Send to Kindle email address, you receive an email asking you to verify your request within 48 hours. Avoid two-factor authentication by making your Send to Kindle email address sufficiently secure.

  • Ensure your Send to Kindle email address is different than any other email addresses you use.
  • Use a combination of uppercase letters, lowercase letters, and numbers.
  • Avoid including any personally identifiable information.

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