Email IP
Email IP is a program used to help people that run ftps keep their friends updated with the ip address of their site if they are on a rotating IP.
The way it works is it will monitor your ip and when it sees that the ip has changed it will send email to everyone on a list that you create and will let them know that your IP address has changed. When they get the email it will also give them the port that you have set for your ftp port in case you have also changed the port.