如何在Python中模拟IMAP服务器？

import imaplib
import email
from email.header import decode_header

# 连接到IMAP服务器
mail = imaplib.IMAP4_SSL("imap.example.com")

# 登录到IMAP服务器
mail.login("username", "password")

# 选择邮箱
mail.select("inbox")

# 搜索邮件
typ, data = mail.search(None, "ALL")
mail_ids = data[0].split()

# 获取最新的电子邮件
latest_email_id = mail_ids[-1]

# 获取电子邮件的原始内容
typ, msg_data = mail.fetch(latest_email_id, "(RFC822)")
msg = email.message_from_bytes(msg_data[0][1])

# 解码邮件主题
subject, encoding = decode_header(msg["Subject"])[0]
if isinstance(subject, bytes):
    subject = subject.decode(encoding)

print("Subject:", subject)
print("From:", msg.get("From"))
print("Date:", msg.get("Date"))