I remember someone showcasing (or even just posting a comment in reply to a thread depicting aggresive policies from mailchimp, cannot recall) their own PaaS fo

I remember someone showcasing (or even just posting a comment in reply to a thread depicting aggresive policies from mailchimp, cannot recall) their own PaaS for email delivery alternative to mailchimp / postmark. It did offer a very nice starter with free emails. Maybe it was mailjet, but I am not sure. Could anyone post the link? Thanks in advance.