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import imaplib
imaplib._MAXLINE = 10000000
import email
import email.utils
from email import policy
import re
import os
import pytz
import traceback
def decode(s, charset):
if type(s) is str:
return s
try:
return s.decode(charset)
except Exception:
pass
try:
return s.decode('utf-8')
except Exception:
pass
try:
return s.decode('latin1')
except Exception as e:
pass
return s.decode('gbk')
class Attachment:
def __init__(self, part):
self.content_type = part.get_content_type()
raw_filename = part.get_filename()
if raw_filename.startswith("=?") and raw_filename.endswith("?="):
dh = email.header.decode_header(raw_filename)
self.filename = decode(dh[0][0], dh[0][1])
else:
h = email.header.Header(raw_filename)
dh = email.header.decode_header(h)
self.filename = decode(dh[0][0], dh[0][1])
self.data = part.get_payload(decode=True)
def __repr__(self):
return f"Attachment(content_type='{self.content_type}', filename='{self.filename}', size={len(self.data)})"
def save_to(self, path):
if os.path.exists(path):
if os.path.isdir(path):
path = os.path.join(path, self.filename)
with open(path, 'wb') as fp:
fp.write(self.data)
else:
with open(path, 'wb') as fp:
fp.write(self.data)
else:
with open(path, 'wb') as fp:
fp.write(self.data)
class Mail:
def __init__(self, num, msg):
self.num = num
self.subject: str = self._decode_value(msg.get("subject"))
date = email.utils.parsedate_to_datetime(msg.get("date"))
if date:
timezone = pytz.timezone('Asia/Shanghai')
date = date.astimezone(timezone)
date = date.replace(tzinfo=None)
self.date: str = str(date) if date else msg.get("date")
from_header = self._decode_value(msg.get("from"))
to_header = self._decode_value(msg.get("to"))
from_name, self.from_addr = email.utils.parseaddr(from_header)
self.from_name = self._decode_value(from_name)
to_name, self.to_addr = email.utils.parseaddr(to_header)
self.to_name = self._decode_value(to_name)
self._plain: str = ""
self._html: str = ""
self._attachments: list = []
self._msg: str = msg
self._parsed: bool = False
def _decode_value(self, value):
if value is None:
return ""
try:
decoded_parts = []
for part, charset in email.header.decode_header(value):
if isinstance(part, bytes):
try:
charset = charset or 'utf-8'
decoded = part.decode(charset)
except (LookupError, UnicodeDecodeError):
try:
decoded = part.decode('gbk')
except UnicodeDecodeError:
decoded = part.decode('utf-8', errors='replace')
decoded_parts.append(decoded)
else:
decoded_parts.append(part)
full_str = ''.join(decoded_parts)
full_str = re.sub(r'\s+', ' ', full_str)
return full_str.strip()
except Exception as e:
print(f"Header decode error: {e}")
return str(value).strip()
@property
def plain(self):
if not self._parsed:
self.parse_content()
return self._plain
@property
def html(self):
if not self._parsed:
self.parse_content()
return self._html
@property
def attachments(self):
if not self._parsed:
self.parse_content()
return self._attachments
def parse_content(self):
self._attachments = []
for part in self._msg.walk():
if part.is_multipart():
continue
if part.get_content_type() == "text/plain":
charset = part.get_content_charset()
content = decode(part.get_payload(decode=True), charset)
self._plain = content
if part.get_content_type() == "text/html":
charset = part.get_content_charset()
content = decode(part.get_payload(decode=True), charset)
self._html = content
if part.get_content_disposition():
if part.get_content_disposition() == "inline":
pass
elif part.get_content_disposition() == "attachment":
self._attachments.append(Attachment(part))
if self._plain:
self._html = ""
self._parsed = True
class ImapMailBox:
def __init__(self, host, port, username, password):
self.host = host
self.port = port
self.username = username
self.password = password
self.conn = imaplib.IMAP4_SSL(host=host, port=port)
self.conn.login(username, password)
def get_mail_count(self):
self.conn.select('Inbox')
state, data = self.conn.search(None, 'ALL')
mail_list = []
mails = data[0].split()
return len(mails)
def get_mail_list(self, page=1, page_size=50):
self.conn.select('Inbox')
state, data = self.conn.search(None, 'ALL')
mail_list = []
mails = data[0].split()[::-1]
if page_size:
mails = mails[(page-1)*page_size: page*page_size]
for num in mails:
state, data = self.conn.fetch(num, '(RFC822)')
raw_email = data[0][1]
try:
msg = email.message_from_bytes(raw_email, policy=policy.default)
mail = Mail(num, msg)
mail_list.append(mail)
except Exception as e:
print(f"Parse raw data failed. [raw_data] '{raw_email}'")
traceback.print_exc()
return mail_list
def mark_as_seen(self, mail):
self.conn.store(mail.num, '+FLAGS', '\\seen')
if __name__ == '__main__':
mailbox = ImapMailBox(
host='imap.aliyun.com', port=993,
username="******", password="******"
)
count = mailbox.get_mail_count()
print(count)
for mail in mailbox.get_mail_list(page=1, page_size=25):
print(mail.date, mail.from_addr, mail.subject, mail.plain)
if mail.attachments:
for attachment in mail.attachments:
attachment.save_to("./")
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