regexes/email.py

import re

EMAIL_REGEX = re.compile(
    r"(?:^|(?<=[^\w@.)]))([\w+-](\.(?!\.))?)*?[\w+-](@|[(<{\[]at[)>}\]])(?:(?:[a-z\\u00a1-\\uffff0-9]-?)*[a-z\\u00a1-\\uffff0-9]+)(?:\.(?:[a-z\\u00a1-\\uffff0-9]-?)*[a-z\\u00a1-\\uffff0-9]+)*(?:\.(?:[a-z\\u00a1-\\uffff]{2,}))",
    flags=re.IGNORECASE | re.UNICODE,
)