是否可以使用python将发送的电子邮件保存到已发送邮件文件夹中？

import smtplib
from email.mime.text import MIMEText
from email.header import Header

# 邮件服务器配置
smtp_server = 'smtp.example.com'
smtp_port = 587
smtp_username = 'your_username'
smtp_password = 'your_password'

# 发件人和收件人配置
sender = 'sender@example.com'
receiver = 'receiver@example.com'

# 邮件内容
subject = 'Hello'
message = 'This is a test email.'

# 创建邮件对象
msg = MIMEText(message, 'plain', 'utf-8')
msg['From'] = Header(sender, 'utf-8')
msg['To'] = Header(receiver, 'utf-8')
msg['Subject'] = Header(subject, 'utf-8')

# 连接到邮件服务器并发送邮件
with smtplib.SMTP(smtp_server, smtp_port) as server:
    server.starttls()
    server.login(smtp_username, smtp_password)
    server.sendmail(sender, receiver, msg.as_string())

# 将已发送的邮件保存到文件夹中
with open('sent_emails.txt', 'a') as file:
    file.write(f'Subject: {subject}\n')
    file.write(f'To: {receiver}\n')
    file.write(f'Content: {message}\n')
    file.write('------------------------\n')