Put image in email (Subscribe2)

Hi,

I’m using the plugin ‘subscribe2’ to send my newsletters.
So, the problem is: I did put a code to show a image on email but, when I post a new publication, the email that the plugin sends isn’t going with the image that I defined.
Actually, is only on the ‘new post’ email that it’s not working, because in the ‘subscription confirmation’ and ‘cancel subscription confirmation’ emails, the image appears normally.
I already set to send the email in HTML format but, didn’t work.

Does anyone know how to do this?

Thanks in advance.