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validate_email() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/validate_email/
    wp-includes/formatting.php: is_email() Verifies that an email is valid. wp-includes/functions.php: _deprecated_function() Mark a function as deprecated and inform when it has been used.

is_email() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/is_email/
    25 rows · Sends an email, similar to PHP’s mail function. wp-includes/user.php: register_new_user() …

wp_mail() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/wp_mail/
    To set the “From:” email address to something other than the WordPress default sender, or to add “Cc:” and/or “Bcc:” recipients, you must use the $headers argument. $headers can be a string or an array, but it may be easiest to use in the array form. To use it, push a string onto the array, starting with “From:”, “Bcc:” or “Cc:” (note the use of the “:”), followed by a valid email address.

WPMU Functions/validate email « WordPress Codex

    https://codex.wordpress.org/WPMU_Functions/validate_email
    Validates an email address using a regular expression and optionally makes a DNS request to check the domain. Replace With. is_email() Parameters $email (required) The email address you would like to validate. Default: None $check_domain (optional) Whether or not to make a DNS request to validate the domain. Default: true Return Values

Function Reference/is email « WordPress Codex

    https://codex.wordpress.org/Function_Reference/is_email
    Interested in functions, hooks, classes, or methods? Check out the new WordPress Code Reference!

email_exists() Function WordPress Developer Resources

    https://developer.wordpress.org/reference/functions/email_exists/
    This function will check whether or not a given email address ($email) has already been registered to a username, and returns that users ID (or false if none exists). See also username_exists . This function is normally used when a user is registering, to ensure that the E-mail address the user is attempting to register with has not already been registered.

DeBounce - WordPress Email Validation Plugin InkThemes

    https://www.inkthemes.com/market/wordpress-email-validation-plugin/
    DeBounce email verification plugin allows you to validate emails on all WordPress forms and make sure the email addresses really exist before submission. This plugin uses DeBounce.io real-time email validation API to validate the emails. Key Features of WordPres Email Validation Plugin:

PHP FILTER_VALIDATE_EMAIL Filter - W3Schools

    https://www.w3schools.com/php/filter_validate_email.asp
    $email = "[email protected]"; // Remove all illegal characters from email $email = filter_var($email, FILTER_SANITIZE_EMAIL); // Validate e-mail if (filter_var($email, FILTER_VALIDATE_EMAIL)) { echo("$email is a valid email address");} else { echo("$email is not a valid email address");}?>
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