WordPress at a glance
filter is not described

wp_mail_original_content filter-hook . WP 2.8.0

Filters the original content of the email.

Give Post-By-Email extending plugins full access to the content, either the raw content, or the content of the last quoted-printable section.

Usage

add_filter( 'wp_mail_original_content', 'filter_function_name_8729' );
function filter_function_name_8729( $content ){
	// filter...

	return $content;
}
$content(string)
The original email content.

Where the hook is called

In file: /wp-mail.php
wp_mail_original_content
wp-mail.php 181
$content = apply_filters( 'wp_mail_original_content', $content );

Where the hook is used (in WP core)

Does not used.