Hello Stefano,
I love this newsletter plugin you must have spent a lot of time on it because everything is just perfect. However I am running to an issue see below.
The code {unsubscription_url} is creating this link below
http://wp-content/plugins/newsletter/do/unsubscription.php?nk=3-1d4913e477
Looks like I am missing the domain for some reason.
This issue is the same with all the other short codes.
The only short code that works properly is {blog_url}
Keep up the great work! I plan on donating to your cause soon.
Kimo
