Great plugin

Thank you Dan!

While we don’t have official documentation yet, we actually already do provide CPT support.

https://github.com/awslabs/amazon-polly-wordpress-plugin/blob/master/admin/class-amazonpolly-admin.php#L108

Adding something like the following should get you up and running.

function my_amazon_polly_post_types( $post_types ) {
    $post_types[] = 'events'
    return $post_types;
}
add_filter( 'amazon_polly_post_types', 'my_amazon_polly_post_types' );

Good luck!