import re
rx = r"\"?([-a-zA-Z0-9.`?{}]+@\w+(?:-\w+)*\.\w+)\"?"
s = """ "bilgi@kleintoys.com" and bilgi@klei-ntoys.com"""
print(re.findall(rx, s))
aW1wb3J0IHJlCnJ4ID0gciJcIj8oWy1hLXpBLVowLTkuYD97fV0rQFx3Kyg/Oi1cdyspKlwuXHcrKVwiPyIKcyA9ICIiIiAiYmlsZ2lAa2xlaW50b3lzLmNvbSIgIGFuZCBiaWxnaUBrbGVpLW50b3lzLmNvbSIiIgpwcmludChyZS5maW5kYWxsKHJ4LCBzKSk=