title: Excel Spreadsheet - If Email Address in Column B Exists in Column A Say "Match Found" in Column C
body: <p>I have two columns of email addresses in an excel spreadsheet.  I need to know if an email address in column B exists in column A.</p>
  
  <p>If an email address in column B does exist in column A, I'd like it to read "match found" next to the corresponding email address in column C.</p>
  
  <p>I'm playing around with something I found here on StackOverflow that looks something like:</p>
  
  <pre><code>=IF(ISNA(VLOOKUP
  </code></pre>
  
  <p>But I can't get it to work (I'm not a complete newb to Excel, but more advance formulas I'm not very familiar with unfortunately)</p>