How to Sort Mutliple Columns With Duplicate Fields

[dreamer1991]

Hello

I have a REALLY complicated problem (at least for me).

I have a sheet with over 3000 contacts (names, emails, etc)

I sent out 4 emails to those contacts.

I have extracted of those emails of those who OPEN the emails.
(roughly 300-500 ppl PER email x 4)

So I have about 1200-1500 emails (some duplicates)

I was wondering if there is a way to import those 300-500 (per column) emails into my master excel sheet (3000 ppl) and sort the duplicates.

The reason why I am doing this because I want to contact those customers who have OPENED my emails multiple times.

Is this possible?

Thanks

[contaminated]

We are glad to help you, but unfortunately U have to read Rule # 1 of FR

1. Use concise, accurate thread titles. Your post title should describe your problem, not your anticipated solution. Use terms appropriate to a Google search. Poor thread titles, like Please Help, Urgent, Need Help, Formula Problem, Code Problem, and Need Advice will be addressed according to the OP's experience in the forum: If you have less than 10 posts, expect (and respond to) a request to change your thread title. If you have 10 or more posts, expect your post to be locked, so you can start a new thread with an appropriate title.

[dreamer1991]

We are glad to help you, but unfortunately U have to read Rule # 1 of FR

Thanks I appreciate it. I don't even know how to describe the Topic of my problem.

I changed it to be at least more understandable (I hope )