import re
data = """
<a href="mailto:%69%6e%66%6f%40%65%6c%69%67%61%6d%65%2e%63%6f%6d" >i<!--
-->nfo@<!--
-->elig<!--
-->ame.<!--
-->com</a>
"""
reEmail = re.compile(r'<a href="mailto:(.+?)">', re.S)
print reEmail.search(data)