python smtplib多部分电子邮件正文未在iphone上显示

Question

我正在尝试在 python 中使用 smtplib 发送带有图像的电子邮件。电子邮件在我的桌面和 iphone gmail 应用程序上显示良好，但在标准 iphone 邮件应用程序上没有出现正文。这是我的代码：

    def send_html_email(self, subject, html, to_email,from_email, password, from_name, image=None):
        msg = MIMEMultipart('alternative')
        msg['From'] = from_name
        msg['To'] = to_email
        msg['Subject'] = subject

        html_message = MIMEText(html, "html")
        msg.attach(html_message)

        if image:
            msgImage = MIMEImage(image)
            msgImage.add_header('Content-ID', '<image1>')
            msg.attach(msgImage)

        session = smtplib.SMTP("smtp.gmail.com:587")
        session.starttls()
        session.login(from_email, password)
        session.sendmail(from_email, to_email, msg.as_string().encode('utf-8'))
        session.quit()

似乎当我不添加图像时，电子邮件与正文一起发送正常。关于如何让它与图像一起工作的任何想法？

Answer 1

这似乎有效：

def send_html_email(self, subject, html, to_email, from_email, password, from_name, image=None):
    msgRoot = MIMEMultipart('related')
    msgRoot['From'] = from_name
    msgRoot['To'] = to_email
    msgRoot['Subject'] = subject
    msg = MIMEMultipart('alternative')
    msgRoot.attach(msg)
    html_message = MIMEText(html, "html")
    msg.attach(html_message)

    if image:
        msgImage = MIMEImage(image)
        msgImage.add_header('Content-ID', '<image1>')
        msgRoot.attach(msgImage)

    session = smtplib.SMTP("smtp.gmail.com:587")
    session.starttls()
    session.login(from_email, password)
    session.sendmail(from_email, to_email, msgRoot.as_string().encode('utf-8'))
    session.quit()