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  2. Help:Email confirmation - Wikipedia

    en.wikipedia.org/wiki/Help:Email_confirmation

    You can check your address confirmation status in your preferences. If your account was registered prior to March 2, 2006 (when confirmation was enforced), your existing address (if any) has not been automatically confirmed. If you change your email address, you will automatically be sent a new confirmation email.

  3. Account verification - Wikipedia

    en.wikipedia.org/wiki/Account_verification

    An email account is often required to create an account. During this process, a confirmation hyperlink is sent in an email message to an email address specified by a person. The email recipient is instructed in the email message to navigate to the provided confirmation hyperlink if and only if they are the person creating an account.

  4. What's a six-digit verification code — and why you should ...

    www.aol.com/whats-six-digit-verification-code...

    Six-digit verification codes are a form of two-factor authentication, a process that helps keep your important online accounts secure. For example, you might get a text message or email with a six ...

  5. Flutter (software) - Wikipedia

    en.wikipedia.org/wiki/Flutter_(software)

    Flutter is an open-source UI software development kit created by Google.It can be used to develop cross platform applications from a single codebase for the web, [3] Fuchsia, Android, iOS, Linux, macOS, and Windows. [4]

  6. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    This is a list of Simple Mail Transfer Protocol (SMTP) response status codes. Status codes are issued by a server in response to a client's request made to the server. Unless otherwise stated, all status codes described here is part of the current SMTP standard, RFC 5321. The message phrases shown are typical, but any human-readable alternative ...

  7. Callback verification - Wikipedia

    en.wikipedia.org/wiki/Callback_verification

    Callback verification, also known as callout verification or Sender Address Verification, is a technique used by SMTP software in order to validate e-mail addresses. The most common target of verification is the sender address from the message envelope (the address specified during the SMTP dialogue as " MAIL FROM ").

  8. Formal verification - Wikipedia

    en.wikipedia.org/wiki/Formal_verification

    A promising type-based verification approach is dependently typed programming, in which the types of functions include (at least part of) those functions' specifications, and type-checking the code establishes its correctness against those specifications. Fully featured dependently typed languages support deductive verification as a special case.

  9. CAPTCHA - Wikipedia

    en.wikipedia.org/wiki/Captcha

    This CAPTCHA (reCAPTCHA v1) of "smwm" obscures its message from computer interpretation by twisting the letters and adding a slight background color gradient.A CAPTCHA (/ ˈ k æ p. tʃ ə / KAP-chə) is a type of challenge–response test used in computing to determine whether the user is human in order to deter bot attacks and spam.