Thanks for your comment. I think you misunderstood my message. I do not develop the site, I develop a newsletter. The site is only a place to subscribe and check the previously sent newsletters. I first send a newsletter and then just publish it on the site to give people an understanding of what they subscribe for:)
I did not mean that you developed the site. My question was which platform you used for the website? Since you are saying you write the newsletter in that case what sort of email software you are using?