Add this to your functions.php or your plugin.
add_filter( 'get_the_excerpt', 'shortcode_unautop');
add_filter( 'get_the_excerpt', 'do_shortcode');
add_filter( 'get_the_excerpt', 'do_shortcode', 5 );
Run Shortcode in WordPress Excerpts
Allow html in Contact Form 7 error messages
Contact Form 7 has a filter where one can alter the messages being sent back to the browser called wpcf7_validation_error. A simple htmlspecialchars_decode altering the $message variable before returning will do the trick. This function will run on any error for any form you have in your site (any CF7 form that is). If you … Continued