Using the list as a baseline to test against leaked passwords.

If you want to personalize, use a simple Python script or even Excel’s text filter to split by @gmail.com , @yahoo.com , @hotmail.com , @aol.com , and @outlook.com . Save each as a separate TXT file.

If you meant something else — such as a script to verify your own list against these providers — let me know, and I can provide technical steps or sample Python code.