A little python script to do this:
#!/usr/bin/env python
import sys
import re
bulkemails = sys.stdin.read()
# regex = whoEver@wHerever.xxx
r = re.compile("[-a-zA-Z0-9._]+@[-a-zA-Z0-9_]+.[a-zA-Z0-9_.]+")
results = r.findall(bulkemails)
emails = ""
for x in results:
print str(x)