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vbernardes/get_email_addresses.py

Created June 18, 2019 15:28
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Function for returning lists of email addresses in To/From fields of a message
Raw
get_email_addresses.py
import re
email_format_pattern = re.compile(r'([a-zA-Z0-9_.+-]+@[a-zA-Z0-9-]+\.[a-zA-Z0-9.-]+)')
def get_email_addresses(message):
'''
Given a string containing raw email text, returns a dict with lists of
email addresses contained in the address fields.
Args:
message: str containing raw email content
Returns:
dict: dictionary with email fields as keys and list of
addresses as the value
'''
address_fields = ['From:', 'To:', 'Cc:', 'Bcc:']
addresses = {}
for field in address_fields:
field_pattern = re.compile(field+'([^:]*):', flags=re.DOTALL) # include '\n' in matches
field_match = field_pattern.search(message) # find everything until next field (':')
# extract only emails from field match
emails_list = email_format_pattern.findall(field_match.group(1))
addresses[field] = emails_list
return addresses
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