Nevermind. Thanks for your response, I've thought of an easy solution. Thanks anyway!

I feel like I might be able to help, but I honestly have no idea what you are trying to do. What is a "list of good emails?" Are these .eml files? Are they email addresses?

> From the three lists to the unknown quality set I need to add new ones, delete the old, note which are new/old

What... does that even mean?

I feel like I might be able to help, but I honestly have no idea what you are trying to do. What is a "list of good emails?" Are these .eml files? Are they email addresses?

&gt; From the three lists to the unknown quality set I need to add new ones, delete the old, note which are new/old

What... does that even mean?

Hi everyone,
I need to take three lists of good emails and another list of unknown quality. From the three lists to the unknown quality set I need to add new ones, delete the old, note which are new/old as well as which of the three sets the emails came from. This can all be done in excel. Do you have any recommendations? I'm not too good with excel.
Thanks!

Comparing two email lists and editing based on one