如何在Python中使用IMAP仅删除一条特定消息

Question

我正在寻找一条特定的消息，然后，在找到之后，我想从收件箱中删除它。 就是这个。 我的代码：

import email
import imaplib

def check_email(self, user, password, imap, port, message):
    M = imaplib.IMAP4_SSL(imap, port)
    M.login(user, password)
    M.select()
    type, message_numbers = M.search(None, '(ALL)')

    subjects = []

    for num in message_numbers[0].split():
        type, data = M.fetch(num, '(RFC822)')
        msg = email.message_from_bytes(data[0][1])
        subjects.append(msg['Subject'])

    if message in subjects:
        M.store(num, '+FLAGS', '\\Deleted')
    else:
        raise FileNotFoundError('Ooops!')

    M.close()
    M.logout()

我想在变量（消息）中按标题，gven查找和删除一封邮件。 你能帮助我吗？

Answer 1

循环遍历所有消息，然后删除最后一个消息（如果任何一个消息具有匹配的主题，那么这是在循环结束后最终指向的num ）。 您可能希望重新编写代码，以便在循环内部进行检查，并在找到所需的循环后放弃其余的循环。

def check_email(self, user, password, imap, port, message):
    M = imaplib.IMAP4_SSL(imap, port)
    M.login(user, password)
    M.select()
    type, message_numbers = M.search(None, '(ALL)')

    found = False

    for num in message_numbers[0].split():
        type, data = M.fetch(num, '(RFC822)')
        msg = email.message_from_bytes(data[0][1])
        # No need to collect all the subjects in a list
        # Just examine the current one, then forget this message if it doesn't match
        if message in msg['Subject']:
            M.store(num, '+FLAGS', '\\Deleted')
            found = True
            break

    # Don't raise an exception before cleaning up
    M.close()
    M.logout()

    # Now finally
    if not Found:
        raise FileNotFoundError('Ooops!')