Drop this file in a Log Directory and It Will extract all the emails in a file.

get_email.py

# Slightly Modified version of https://gist.github.com/dideler/5219706

from optparse import OptionParser
import os.path
import re
import os
from sets import Set

regex = re.compile(("([a-z0-9!#$%&'*+\/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+\/=?^_`"
                    "{|}~-]+)*(@|\sat\s)(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?(\.|"
                    "\sdot\s))+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?)"))

def file_to_str(filename):
    """Returns the contents of filename as a string."""
    with open(filename) as f:
        return f.read().lower() # Case is lowered to prevent regex mismatches.

def get_emails(s):
    """Returns an iterator of matched emails found in string s."""
    # Removing lines that start with '//' because the regular expression
    # mistakenly matches patterns like 'http://[email protected]' as '//[email protected]'.
    return (email[0] for email in re.findall(regex, s) if not email[0].startswith('//'))

if __name__ == '__main__':   
    dir = os.getcwd()    
    unique_emails = Set([])
    for root, dirs, files in os.walk(dir):
        for arg in files:
            if os.path.isfile(arg) and arg != "get_email.py":
                for email in get_emails(file_to_str(arg)):
                    unique_emails.add(email)
                    print email
        else:
            print '"{}" is not a file to parse for emails!!'.format(arg)
                     
    f = open('unique_emails.txt', 'w+')       
    for item in list(unique_emails):
        f.write("%s\n" % item)
    f.close()