阿里邮箱IMAP场景示例：获取邮件并保存为eml文件

Python示例代码

场景：获取邮件主题和内容，并保存为eml文件，文件名格式为email_uid_subject.eml。

# -*- coding: utf-8 -*-
import imaplib
import email
from imapclient import imap_utf7


def get_folders():
    # 获取邮箱文件夹列表
    list_folder = []
    list_folder_org = conn.list()
    for i in list_folder_org[1]:
        list_folder.append(imap_utf7.decode(i).split('/" ')[1].replace('"', ''))  # 截取文件夹名称
    print(list_folder)
    return list_folder


# def get_content(msg):
#     # 解码邮件内容
#     if msg.is_multipart():
#         # 列表
#         return get_content(msg.get_payload(0))  # 获取邮件中的文本
#     else:
#         # 字符串
#         return msg.get_payload(None, decode=True)  # 获取邮件中的文本，如果是True将解码base64/quoted-printable等格式编码内容，否则不解码


def save_email_as_eml(msg, uid):
    # 保存邮件为 .eml 文件
    subject = msg['Subject']
    if subject:
        try:
            # 尝试解码主题
            decoded_subject = email.header.decode_header(subject)[0][0]
            if isinstance(decoded_subject, bytes):
                decoded_subject = decoded_subject.decode('utf-8')
            # 替换文件名中的非法字符
            safe_subject = "".join([c if c.isalnum() or c in (' ', '.', '_') else '_' for c in decoded_subject])
            eml_filename = f"email_{uid}_{safe_subject}.eml"
        except Exception as e:
            print(f"解码主题失败: {e}")
            eml_filename = f"email_{uid}.eml"
    else:
        eml_filename = f"email_{uid}.eml"

    with open(eml_filename, 'w', encoding='utf-8') as f:
        f.write(msg.as_string())
    print(f"邮件已保存为 {eml_filename}")


# 配置 IMAP 服务器
imap_server = 'imap.qiye.aliyun.com'  # IMAP 服务器地址
username = 'test@example.com'  # 用户名
password = '*********'  # 密码
port = 993  # 端口号

# 连接服务器，并登录
conn = imaplib.IMAP4_SSL(imap_server, port)  # SSL加密连接

# 认证登录
conn.login(username, password)

print('邮箱文件夹列表：')
get_folders()  # 获取邮箱文件夹列表

folder_name = imap_utf7.encode('folder1')  # utf-7编码，中文编码
conn.select(folder_name)  # 'draft','INBOX'   #选取文件夹
v_type, data = conn.search(None, 'UNSEEN SINCE 05-Mar-2024')  # 查询某日期后的未读邮件

email_list = data[0].split()
if len(email_list) == 0:
    print('文件夹为空，退出！')
    exit(1)

print('状态=', v_type, '消息队列序号num=', data)
print('该文件夹下所有的UID:', conn.uid('search', None, "ALL"))
# 获取最后一封邮件的序号
item = email_list[len(email_list) - 1]
print('最后一封邮件的消息队列序号num:', item)

v_status = conn.status(folder_name, '()')
v_status_1 = (v_status[1][0].decode('utf-8').replace('MESSAGES', '邮箱中的邮件总数：')
              .replace('RECENT', '邮箱中标志为RECENT的邮件数:')
              .replace('UIDNEXT', '可以分配给新邮件的下一个UID:')
              .replace('UIDVALIDITY', '邮箱的UID有效性标志:')
              .replace('UNSEEN', '未读邮件:'))

print('邮箱文件夹基本信息：', folder_name, v_status_1)
v_count = 1
list_show_yulan = []

# 解析邮件
for num in email_list:
    v_type, data = conn.fetch(num, '(RFC822)')
    UID = conn.fetch(num, 'UID')[1]
    v_num_uid = UID[0].decode('utf-8').replace('(', '').replace(')', '').split(' ')

    print('\n解析第' + str(v_count) + '封邮件，num=', v_num_uid[0], ' UID=', v_num_uid[2],
          '===============================================')

    print('服务器返回值=', data[0])  # 返回的结果，包含num,UID和邮件原文
    msg = email.message_from_bytes(data[0][1])
    print('邮件eml原文:\n', msg)

    # 保存邮件为 .eml 文件
    save_email_as_eml(msg, v_num_uid[2])

    v_count = v_count + 1

# conn.print_log()  # 打印IMAP日志
conn.close()

运行结果