Put the e-mail suscription prompt at the end of every post

So, I had this idea. Create a post and pin it to the top telling my readers to subscribe to receive the new posts via e-mail.

But then I saw that the prompt of subscription doesn’t appear at the end of each post, only in the main page. There is any way I can add it to the end of every post or at least at the end of one particular post that I pinned?


Ok, I saw now that I only need to add this piece of code at the end of the post: