如何在flask中配置电子邮件发送？

我尝试让用户通过textarea表单发送电子邮件：

<form method="POST">

    <textarea id="content" name="content" rows="8" cols="100">
        Please submit your question here.
  </textarea>
   
    email: <input type="text" name="email">
    <input type="submit" , value="submit">

</form>

在视图functons nlp.py中：

bp = Blueprint('nlp', __name__, url_prefix='/nlp')

mail = Mail(bp)

@app.route('/question', methods=['POST'])
def question():
    msg = Message('Test', sender='lingvisa@gmail.com', recipients=['lingvisa@email.com'])
    msg.body = 'This is a test email sent to myself' 
    mail.send(msg)

    return 'done'

但是，它会报告以下错误消息：

AttributeError: 'Blueprint' object has no attribute 'config'

---

你为什么要关上它？

AttributeError: 'Blueprint' object has no attribute 'config'