auto featureIf you regularly include dynamic posts in your campaigns you are familiar with the auto feature of Mailster. To change the content of this feature you can add a simple function in your themes function.php file.

By default the content used in this feature looks like this:



This will insert the title of your last post ({post_title:-1}) as headline and the excerpt ({post_excerpt:-1}) as content. In the editbar it will look something to this:

editbar and dynamic tags

If you like to link the headline to the actual blog post you can wrap the anchor tag around the tag. Add a new snippet to your themes functions.php:

function my_mailster_auto_tag( $pattern, $post_type, $options, $post ){

	return $pattern;
add_filter( 'mailster_auto_tag', 'my_mailster_auto_tag', 10, 4 );

This will basically adds a filter to the ‘mailster_auto_tag’ and allows you to alter the $pattern of your output. At this state it returns the original $pattern so there’s actually no change.

Changing the pattern

The $pattern is an associative array and contains following keys:

  • title – the string used for the title
  • alt – used for the alt tag if an image is in the module
  • content – used if content is selected
  • excerpt – used if excerpt is selected
  • link – the link to the post
  • image – the image tag which links to the feature image of the post

To wrap wrap the title with a link you have to add one line to your function:

$pattern['title'] = '<a href="{'.$post_type.'_link:'.$options.'}">{'.$post_type.'_title:'.$options.'}</a>

This replaces the old title and add a new pattern with links. Note the $post_type variable which gets replaced with the selected post type. The $options represents the content after the “:” which is -1 for the latest post in this case.

Adding the name of the author

You can append the authors name after the excerpt if you add this line:

$pattern['excerpt'] .= "<br>".'by {'.$post_type.'_author_name:'.$options.'}';

The whole code snippet you have to add looks like this:

function my_mailster_auto_tag( $pattern, $post_type, $options, $post ){

    $pattern['title'] = '<a href="{'.$post_type.'_link:'.$options.'}">{'.$post_type.'_title:'.$options.'}</a>';
    $pattern['excerpt'] .= "<br>".'by {'.$post_type.'_author_name:'.$options.'}';
    return $pattern;

add_filter( 'mailster_auto_tag', 'my_mailster_auto_tag', 10, 4 );

The editbar now reflects your changes and you will know if everything went well. editbar with custom auto tags

Targeting multiple elements

By default Mailster uses the first occurrence of a <single> element of the chosen module to inject the $pattern['title']. If you have multiple <single> elements, <multi> or <img> elements you can return an array like this:

add_filter( 'mailster_auto_tag', function ( $pattern, $post_type, $options, $post ){

    $pattern['title'] = array(
            'First Title',
            'Second Title,
    return $pattern;
}, 10, 4 );

This will insert “First Title” into the first <single> element and “Second Title” in the second <single> element.

Did you know you can exclude certain posts from Mailster? Read more.