Double opt-in is great. I actually recently got a complaint email from a reader complaining about how difficult it was to subscribe to my newsletter which I fou

Double opt-in is great. I actually recently got a complaint email from a reader complaining about how difficult it was to subscribe to my newsletter which I found to be hilarious. One of the reasons I use double opt-in is because it means that the subscribers have to really want to subscribe and not do it by mistake. That seems to help improve the open rate which can be used as a selling point against other newsletter in my field with a higher subscriber count, but low open rates.