Can you please explain in some detail what is not working for you , and have you added the mail content after installing the plugin please refer the screenshot https://wordpress.org/plugins/html-new-user-notification-email/screenshots/
Hi thanks for reply, the administrator does not receive the email, and the new user either.
Yes and I haven´t mails in spam. I receipt other mails from the web without problems.
I have tested the plugin on a new site to confirm its usability and its working fine. Please check if you have filled required information on Settings->Html new user notification page else it might be conflicting with some other plugin on your site. Can I know if you are using a new user from backend or you have custom form for it.
Please post a support topic to get help before posting a review.
By the way, why did you rate it a five star if it didn’t work?