How to get emails received from gmail python?
I want to get the last 10 received gmails with python.
Currently I have this code but it only returns a limited number of emails and it manipulates pop3 directly, which makes it unnecessary long.
Source of the code: https://www.code-learner.com/python-use-pop3-to-read-email-example/
import poplib
import smtplib, ssl
def guess_charset(msg):
# get charset from message object.
charset = msg.get_charset()
# if can not get charset
if charset is None:
# get message header content-type value and retrieve the charset from the value.
content_type = msg.get('Content-Type', '').lower()
pos = content_type.find('charset=')
if pos >= 0:
charset = content_type[pos + 8:].strip()
return charset
def decode_str(s):
value, charset = decode_header(s)[0]
if charset:
value = value.decode(charset)
return value
# variable indent_number is used to decide number of indent of each level in the mail multiple bory part.
def print_info(msg, indent_number=0):
if indent_number == 0:
# loop to retrieve from, to, subject from email header.
for header in ['From', 'To', 'Subject']:
# get header value
value = msg.get(header, '')
if value:
# for subject header.
if header=='Subject':
# decode the subject value
value = decode_str(value)
# for from and to header.
else:
# parse email address
hdr, addr = parseaddr(value)
# decode the name value.
name = decode_str(hdr)
value = u'%s <%s>' % (name, addr)
print('%s%s: %s' % (' ' * indent_number, header, value))
# if message has multiple part.
if (msg.is_multipart()):
# get multiple parts from message body.
parts = msg.get_payload()
# loop for each part
for n, part in enumerate(parts):
print('%spart %s' % (' ' * indent_number, n))
print('%s--------------------' % (' ' * indent_number))
# print multiple part information by invoke print_info function recursively.
print_info(part, indent_number + 1)
# if not multiple part.
else:
# get message content mime type
content_type = msg.get_content_type()
# if plain text or html content type.
if content_type=='text/plain' or content_type=='text/html':
# get email content
content = msg.get_payload(decode=True)
# get content string charset
charset = guess_charset(msg)
# decode the content with charset if provided.
if charset:
content = content.decode(charset)
print('%sText: %s' % (' ' * indent_number, content + '...'))
else:
print('%sAttachment: %s' % (' ' * indent_number, content_type))
# input email address, password and pop3 server domain or ip address
email = '[email protected]'
password = 'yourpassword'
# connect to pop3 server:
server = poplib.POP3_SSL('pop.gmail.com')
# open debug switch to print debug information between client and pop3 server.
server.set_debuglevel(1)
# get pop3 server welcome message.
pop3_server_welcome_msg = server.getwelcome().decode('utf-8')
# print out the pop3 server welcome message.
print(server.getwelcome().decode('utf-8'))
# user account authentication
server.user(email)
server.pass_(password)
# stat() function return email count and occupied disk size
print('Messages: %s. Size: %s' % server.stat())
# list() function return all email list
resp, mails, octets = server.list()
print(mails)
# retrieve the newest email index number
#index = len(mails)
index = 3
# server.retr function can get the contents of the email with index variable value index number.
resp, lines, octets = server.retr(index)
# lines stores each line of the original text of the message
# so that you can get the original text of the entire message use the join function and lines variable.
msg_content = b'\r\n'.join(lines).decode('utf-8')
# now parse out the email object.
from email.parser import Parser
from email.header import decode_header
from email.utils import parseaddr
import poplib
# parse the email content to a message object.
msg = Parser().parsestr(msg_content)
print(len(msg_content))
# get email from, to, subject attribute value.
email_from = msg.get('From')
email_to = msg.get('To')
email_subject = msg.get('Subject')
print('From ' + email_from)
print('To ' + email_to)
print('Subject ' + email_subject)
for part in msg.walk():
if part.get_content_type():
body = part.get_payload(decode=True)
print_info(msg, len(msg))
# delete the email from pop3 server directly by email index.
# server.dele(index)
# close pop3 server connection.
server.quit()
I also tried this code but it didn't work:
import imaplib, email, base64
def fetch_messages(username, password):
messages = []
conn = imaplib.IMAP4_SSL("imap.gmail.com", 993)
conn.login(username, password)
conn.select()
typ, data = conn.uid('search', None, 'ALL')
for num in data[0].split():
typ, msg_data = conn.uid('fetch', num, '(RFC822)')
for response_part in msg_data:
if isinstance(response_part, tuple):
messages.append(email.message_from_string(response_part[1]))
typ, response = conn.store(num, '+FLAGS', r'(\Seen)')
return messages
and this also didn't work for me...
import poplib
from email import parser
pop_conn = poplib.POP3_SSL('pop.gmail.com')
pop_conn.user('@gmail.com')
pop_conn.pass_('password')
messages = [pop_conn.retr(i) for i in range(1, len(pop_conn.list()[1]) + 1)]
# Concat message pieces:
messages = ["\n".join(mssg[1]) for mssg in messages]
#Parse message intom an email object:
messages = [parser.Parser().parsestr(mssg) for mssg in messages]
for message in messages:
print(message['subject'])
print(message['body'])
Answer
https://developers.google.com/gmail/api/quickstart/python is the preferred way:
from gmail.gmail import gmail_auth, ListThreadsMatchingQuery
service = gmail_auth()
threads = ListThreadsMatchingQuery(service, query=query)
where:
def ListThreadsMatchingQuery(service, user_id='me', query=''):
"""List all Threads of the user's mailbox matching the query.
Args:
service: Authorized Gmail API service instance.
user_id: User's email address. The special value "me"
can be used to indicate the authenticated user.
query: String used to filter messages returned.
Eg.- 'label:UNREAD' for unread messages only.
Returns:
List of threads that match the criteria of the query. Note that the returned
list contains Thread IDs, you must use get with the appropriate
ID to get the details for a Thread.
"""
try:
response = service.users().threads().list(userId=user_id, q=query).execute()
threads = []
if 'threads' in response:
threads.extend(response['threads'])
while 'nextPageToken' in response:
page_token = response['nextPageToken']
response = service.users().threads().list(userId=user_id, q=query,
pageToken=page_token).execute()
threads.extend(response['threads'])
return threads
except errors.HttpError as error:
raise error