How does this compare to Mailchimp's rss-to-email feature? What do the forms look like? What about deliverability? What about pricing? There's a lot of unanswe

How does this compare to Mailchimp's rss-to-email feature? What do the forms look like? What about deliverability? What about pricing? There's a lot of unanswered questions in my mind that don't have answers on your website.