Sendfox?

Has anyone here had good or bad experiences with Sendfox? I use MailerLite, but I’m researching options for a second email list that has over 1,000 subscribers and thus isn’t a candidate for MailerLite’s free plan. I’m interested in Sendfox’s Lifetime plan. Features I need are (1) multiple lists/audiences, (2) automations, (3) RSS feed for blog posts, and (4) embeddable signup forms. I would be switching this list over from MailChimp. Any insights?