显示smtplib发送的邮件中的用户名

import smtplib
from email.mime.text import MIMEText

# 邮件发送者的信息
sender = "发送者名称 <发送者邮箱>"
password = "发送者邮箱密码"

# 邮件接收者的信息
receiver = "接收者邮箱"

# 邮件主题和内容
subject = "示例邮件"
content = "这是一封示例邮件"

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

# 发送邮件
try:
    server = smtplib.SMTP("smtp.example.com", 25)  # 使用相应的SMTP服务器和端口号
    server.login(sender, password)
    server.sendmail(sender, receiver, message.as_string())
    server.quit()
    print("邮件发送成功")
except smtplib.SMTPException as e:
    print("邮件发送失败:", e)