```python

import smtplib

from email.mime.multipart import MIMEMultipart

from email.mime.text import MIMEText

def send_email():

msg = MIMEMultipart()

msg['From'] = 'your-email@gmail.com'

msg['To'] = 'receiver-email@gmail.com'

msg['Subject'] = 'Test Email'

body = 'This is a test email.'

msg.attach(MIMEText(body, 'plain'))

server = smtplib.SMTP('smtp.gmail.com', )

server.starttls()

# Login Credentials for sending the mail

server.login(msg['From'], "your-password")

text = msg.as_string()

server.sendmail(msg['From'], msg['To'], text)

server.quit()

send_email()

```

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