For many of our client sites, we need a simple solution to ensure their contact form and CMS notification messages go through. Emailit is very solid for this purpose in our testing so far. We plan on utilizing it for the remainder of our client sites. Like another reviewer, we use Simply Static to render out a static version of the Wordpress site. For form notifications, this is a great alternative to Formspree. I would recommend the Emailit creator reach out to Simply Static to see if it would be possible to have a native integration built for these two systems since it would make roll-out a breeze.