使用Python从Gmail下载特定电子邮件

import base64
from google.oauth2 import service_account
from googleapiclient.discovery import build

# 设置Google API凭据
credentials = service_account.Credentials.from_service_account_file('path/to/credentials.json')
scoped_credentials = credentials.with_scopes(['https://www.googleapis.com/auth/gmail.readonly'])

# 构建Gmail API客户端
gmail_client = build('gmail', 'v1', credentials=scoped_credentials)

# 设置搜索条件
search_query = 'from:example@gmail.com subject:test'

# 搜索邮件
message_ids = []
messages = gmail_client.users().messages().list(userId='me', q=search_query).execute()
if 'messages' in messages:
    message_ids.extend(messages['messages'])

# 下载特定邮件
for message_id in message_ids:
    message = gmail_client.users().messages().get(userId='me', id=message_id['id']).execute()
    for part in message['payload']['parts']:
        if part['mimeType'] == 'text/plain':
            content = base64.urlsafe_b64decode(part['body']['data'])
            print(content.decode('utf-8'))