wp_mail_content_type

apply_filters('wp_mail_content_type') is found 2 times:

• /wp-includes/formatting.php line 6127

  		$content_type = 'text/plain';
  	}
  
  	/** This filter is documented in wp-includes/pluggable.php */
  	$content_type = apply_filters( 'wp_mail_content_type', $content_type );
  
  	if ( 'text/html' === $content_type ) {
  		$mail['message'] = wp_staticize_emoji( $mail['message'] );
  	}
  
  	return $mail;
  

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• /wp-includes/pluggable.php line 480

  		 * @since 2.3.0
  		 *
  		 * @param string $content_type Default wp_mail() content type.
  		 */
  		$content_type = apply_filters( 'wp_mail_content_type', $content_type );
  
  		$phpmailer->ContentType = $content_type;
  
  		// Set whether it's plaintext, depending on $content_type.
  		if ( 'text/html' === $content_type ) {
  			$phpmailer->isHTML( true );
  

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