um_email_template_html_formatting
Hook type
Filter
Description
Change email notification template header
Parameters
$header
(string) Email notification header. '' by default
$slug
(string) Template Key
$args
(array) Template settings
Usage
<?php add_filter( 'um_email_template_html_formatting', 'function_name', 10, 3 ); ?>
Examples
<?php
add_filter( 'um_email_template_html_formatting', 'my_email_template_html_formatting', 10, 3 );
function my_email_template_html_formatting( $header, $slug, $args ) {
    // your code here
return $header;
}
?>
Change Log
Since: 2.0
Source
um_email_template_html_formatting is located in includes/core/class-mail.php::line 241