Newsletter and Pop up Plugin with button reopening opportunity?


I’m currently working for, and is in need for some advice on Newsletter and Pop up plugins. As you can see on their website, the pop up box they are currently equipped with now doesn’t have any reopening or minimizing possibilities. It is just a box you see once, bu we would like for the visitors to be able to open the pop up again.
I was then wondering, if there is any plugin thet lets you create a button that lets you repoen the pop up box once it has been closed and minimize it when it is open ? or would it be easier to make with HTML and CSS?

If you don’t understand what i mean, then check out, which is where i got the idea from.