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  2. W3C Markup Validation Service - Wikipedia

    en.wikipedia.org/wiki/W3C_Markup_Validation_Service

    The Markup Validation Service is a validator by the World Wide Web Consortium (W3C) that allows Internet users to check pre-HTML5 HTML and XHTML documents for well-formed markup against a document type definition (DTD). Markup validation is an important step towards ensuring the technical quality of web pages.

  3. Email authentication - Wikipedia

    en.wikipedia.org/wiki/Email_authentication

    Email authentication, or validation, is a collection of techniques aimed at providing verifiable information about the origin of email messages by validating the domain ownership of any message transfer agents (MTA) who participated in transferring and possibly modifying a message.

  4. HTML email - Wikipedia

    en.wikipedia.org/wiki/HTML_email

    Email software that complies with RFC 2822 is only required to support plain text, not HTML formatting. Sending HTML formatted emails can therefore lead to problems if the recipient's email client does not support it. In the worst case, the recipient will see the HTML code instead of the intended message.

  5. CSS HTML Validator - Wikipedia

    en.wikipedia.org/wiki/CSS_HTML_Validator

    CSS HTML Validator is developed, marketed, and sold by AI Internet Solutions LLC located in Texas. [1] The first version of CSS HTML Validator was released in 1997 for Windows 95. The current version is 2024/v24.03 [2] (as of June 24, 2024) and is for Windows 10 and above, including Windows 11.

  6. DomainKeys Identified Mail - Wikipedia

    en.wikipedia.org/wiki/DomainKeys_Identified_Mail

    DomainKeys Identified Mail (DKIM) is an email authentication method designed to detect forged sender addresses in email (email spoofing), a technique often used in phishing and email spam. DKIM allows the receiver to check that an email that claimed to have come from a specific domain was indeed authorized by the owner of that domain. [ 1 ]

  7. Certified Server Validation - Wikipedia

    en.wikipedia.org/wiki/Certified_Server_Validation

    Certified Server Validation (CSV) is a technical method of email authentication intended to fight spam. Its focus is the SMTP HELO-identity of mail transfer agents . Purpose

  8. Help:Email confirmation - Wikipedia

    en.wikipedia.org/wiki/Help:Email_confirmation

    From your preferences, go to the section entitled User profile, and scroll down to Email options, if desired check the box next to Enable email from other users. Click the button in that section; an email will be sent to your email address with a confirmation link. If you see no link, go to Special:ConfirmEmail.

  9. Validator - Wikipedia

    en.wikipedia.org/wiki/Validator

    A validator is a computer program used to check the validity or syntactical correctness of a fragment of code or document. The term is commonly used in the context of validating HTML, [1] [2] CSS, and XML documents like RSS feeds, though it can be used for any defined format or language.