Hello. I would like to find (or develop using PHP) an email list management tool for my website. I have tried several different WordPress plugins, and all are seriously lacking in one aspect or another. Might someone be able to suggest a suitable backend that I can install on my website? Or, what would you suggest as a starting point, if I were to develop my own management tool? My initial thoughts have been to put it on a separate WordPress page, so I could then use the WordPress APIs to generate the content of the email that I would like. Are there some PHP functions that could be used send out emails?