Sender is a service I just found while compiling this issue, so I don’t have anything personal to say about it. However, given that the plan they highlight on their pricing page is the free plan kind of won me over. With 2,500 subscribers and 15,000 monthly emails, it is the best of this lot. The features they provide are comparable to if not more inviting than some of the bigger players. Having spent some time looking at them, I’m might try them out myself.