There is no need subscribe plugins. You can send e-mails to your users. When you write a new article WordPress automatically send a new mail to your users. This is a simple trick on functions.php.

You can add a simple message after your every post. This is a simple code. Just open your single.php and add this code. That’s All!

Hi everybody! I will send newsletter weekly if you add your e-mail to my newsletter. I add a newsletter system to my blog. You can subscribe to it and wait for newslteer. or follow my tweets! Have a nice day!