apply_filters( 'is_email', string|false $is_email, string $email, string $context )

3556		 * @since 2.8.03557		 *3558		 * @param string|false $is_email The email address if successfully passed the is_email() checks, false otherwise.3559		 * @param string       $email    The email address being checked.3560		 * @param string       $context  Context under which the email was tested.3561		 */3562		return apply_filters( 'is_email', false, $email, 'email_too_short' );3563	}3564 3565	// Test for an @ character after the first position.3566	if ( false === strpos( $email, '@', 1 ) ) {3567		/** This filter is documented in wp-includes/formatting.php */3568		return apply_filters( 'is_email', false, $email, 'email_no_at' );