Gmail 邮件显示通过 Python 脚本导入后的实际上传日期，而不是 eml 文件中的日期

问：

以下 Python 脚本应导入位于特定文件夹中的 eml 文件并分配预定义的标签。一般来说，脚本正在工作并完成它的工作。

只有一个小问题，而不是eml中的时间戳，在Gmail界面中，我看到了导入的时间戳。这样，电子邮件就无法正确地混合到时间线中。

是否可以将“收到：”日期调整为 eml 的日期，就像它原来一样？

我以为我已经通过设置“internalDate”解决了这个问题。

import os
import base64
import email
import json
import imaplib
from google.oauth2.credentials import Credentials
from google_auth_oauthlib.flow import InstalledAppFlow
from googleapiclient.discovery import build
from datetime import datetime

# Gmail API settings
SCOPES = ['https://www.googleapis.com/auth/gmail.modify']
CLIENT_SECRET_FILE = 'credentials.json'
GMAIL_USER = '[email protected]'

# Label to use in Gmail (e.g., "backup")
GMAIL_LABEL = 'backup'

# Directory containing your local .eml files
LOCAL_EML_DIR = './eml/'

# Define a function to get a Gmail API service
def get_gmail_service():
    creds = None
    # The file token.json stores the user's access and refresh tokens.
    if os.path.exists('token.json'):
        creds = Credentials.from_authorized_user_file('token.json', SCOPES)
    if not creds or not creds.valid:
        flow = InstalledAppFlow.from_client_secrets_file(CLIENT_SECRET_FILE, SCOPES)
        creds = flow.run_local_server(port=0)
        # Save the credentials for the next run
        with open('token.json', 'w') as token:
            token.write(creds.to_json())
    service = build('gmail', 'v1', credentials=creds)
    return service

def get_label_id(service, label_name):
    results = service.users().labels().list(userId=GMAIL_USER).execute()
    labels = results.get('labels', [])
    
    for label in labels:
        if label['name'] == label_name:
            return label['id']
    
    return None

# Upload local .eml files to Gmail using the Gmail API
def upload_eml_files_to_gmail(service, label_name, eml_dir):
    label_id = get_label_id(service, label_name)  # Get the label ID by name
    if not label_id:
        print(f"Label '{label_name}' not found in Gmail.")
        return

    for filename in os.listdir(eml_dir):
        if filename.endswith('.eml'):
            eml_path = os.path.join(eml_dir, filename)
            
            # Read the .eml file
            with open(eml_path, 'rb') as eml_file:
                eml_data = eml_file.read()
            
            # Extract the INTERNALDATE from the EML file
            eml_message = email.message_from_bytes(eml_data)
            internaldate = eml_message.get('Date')
            
            # Convert internaldate to Unix timestamp and then to an integer
            internaldate = datetime.strptime(internaldate, '%a, %d %b %Y %H:%M:%S %z').timestamp()
            internaldate = int(internaldate)
            
            # Create a message with the eml file content and internalDate
            message = base64.urlsafe_b64encode(eml_data).decode('utf-8')
            
            message = {
                'raw': message,
                'internalDate': str(internaldate),
                'labelIds': [label_id]  # Assign the label to the message
            }
            
            # Upload the message to Gmail with the specified label
            service.users().messages().insert(userId=GMAIL_USER, body=message).execute()

# Main function to run the script
def main():
    service = get_gmail_service()  # Authenticate with Gmail API
    upload_eml_files_to_gmail(service, GMAIL_LABEL, LOCAL_EML_DIR)  # Upload .eml files to Gmail

if __name__ == '__main__':
    main()

原始时间戳：

Gmail 时间戳（显示上传时间）：

Gmail 中的邮件标头（显示两个时间戳）：