I USE, Recommend, And Am An Affiliate For Aweber! Use It Free!
I’ve probably used them for 15+ year, DESPITE having my own PRIVATE LABEL of a competing autoresponder service since 2004! Feel free to ask me which one, and when it might be advantageous. HINT: It also integrates a shopping-cart… and some other functionality… While troubleshooting WHY one of my emails was ending up filtered…