有人能建议如何用send_mail发送电子邮件吗？它不工作

from django.core.mail import send_mail

send_mail(
    'Subject here',
    'Here is the message.',
    'from@example.com',
    ['to@example.com'],
    fail_silently=False,
)

# settings.py
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.example.com'
EMAIL_PORT = 587
EMAIL_USE_TLS = True
EMAIL_HOST_USER = 'your_email@example.com'
EMAIL_HOST_PASSWORD = 'your_email_password'

# views.py
from django.core.mail import send_mail
from django.http import HttpResponse

def send_email(request):
    send_mail(
        'Subject here',
        'Here is the message.',
        'from@example.com',
        ['to@example.com'],
        fail_silently=False,
    )
    return HttpResponse("Email sent!")