Most efficient program for finding out associated email address

[UhmTech]

The company that I work with recently purchased a list of company names, addresses, city, state, zip, and phone numbers of potentially interested clients for our services. I have an excel spreadsheet that looks like this:



And I am responsible for finding the associated email address for that clinic.
This seems like a simple task, but I have 33,000 of them to find in one week. If anyone knows the simplest way to go about this, whether it is a program or a macro I could make, I would greatly appreciate any help.

[SUpER CoP]

You could try to copy and paste the following codes that is given below in the macro window (alt F11) for finding out email address and check whether it works out for you or not:

Sub query()
x = Cells(Rows.Count, 1).End(xlUp).Row
For a = 1 To x
Cells(a, 3) = "www.website.com/searchabc123etc=" & Cells(a, 1) & "+" & Cells(a, 2)
Next a
End Sub

After that, you just need to run the macro and it will make custom URL's. Hope that helps.