Hi, I have a text file called emails.txt in the form of domain1.com:1111@hotmail.com domain2.com:2222@hotmail.com domain3.com:3333@hotmail.com domain4.com:1111@hotmail.com domain5.com:1111@hotmail.com you can see that comes 3 times in the list. The perl script should make e new list called emails1.txt in which the duplicate emails are removed. So it would look like this: domain1.com:1111@hotmail.com domain2.com:2222@hotmail.com domain3.com:3333@hotmail.com This list is used in an email program, and I don't want to email the same people twice. If you can do this, pm me. It would be great if I could have this today. Greetz Smetten