Review on Mailsenpai by Bill Dahl

I like that it integrates well with MailChimp, so you can easily set up emails for multiple newsletters without having to do much work yourself. It's also easy to track open rates and clickthroughs in real time. The interface isn't as intuitive as some other services (like ConvertKit), but they're working hard at improving this. Mailsenpai is an excellent tool for building out email lists quickly and effectively. We use it primarily to send our blog subscribers occasional content updates via email instead of posting them directly to our site.