Flask: Email sends 'None': Please help!

Hey guys, I have created a form in HTML and the data is stored in a variable in Flask. However, they are in a function called ‘submit’ and they are not global. I tried using the global keyword but it doesn’t seem to work. I then tried to send an email with these variables but they give me a ‘None’ output. Can someone help me?
Repl link:

from flask import Flask,request
import os, smtplib # Import the smtp library
from email.mime.multipart import MIMEMultipart # Import the mime library to create multipart messages
from email.mime.text import MIMEText # Import the mime library to create text messages
app = Flask(__name__)

def index():
    return '''<!DOCTYPE html>
    <h1>Contact Form</h1>
    <form action="/submit" method="post">
        <label for="name">Name:</label>
        <input type="text" id="name" name="name" required><br><br>

        <label for="email">Email:</label>
        <input type="email" id="email" name="email" required><br><br>

        <label for="message">Message:</label><br>
        <textarea id="message" name="message" rows="5" cols="30" required></textarea><br><br>

        <input type="submit" value="Submit">

global name
global email
global message
@app.route('/submit', methods=['POST'])
def submit():
    global name
    global email
    global message
    name= request.form['name']
    email= request.form['email']
    message= request.form['message']
    # Do something with the form data (store in a variable, process, etc.)
    # For this example, we will just print the form data

    return "Form submitted successfully!",name,email,message 

password = os.environ['mailPassword']
username = os.environ['mailUsername']

def sendMail():
  email = f'''Name: {name}
  Message: {message}''' # Contents of the message
  server = "smtp.gmail.com" # Address of the mail server, change it to yours if you need to
  port = 587 # Port of the mail server, change it to yours if you need to
  s = smtplib.SMTP(host = server, port = port) # Creates the server connection using the host and port details
  s.starttls() # Sets the encryption mode
  s.login(username, password) # Logs into the email server for us

  msg = MIMEMultipart() # Creates the message
  msg['To'] = receiver # Sets the receiver's email address
  msg['From'] = username # Sets the sender's email address
  msg['Subject'] = "Form data" # Sets the subject of the message
  msg.attach(MIMEText(email, 'html')) # Attaches the email content to the message as html

  s.send_message(msg) # Sends the message
  del msg # Deletes the message from memory
sendMail() # Call the subroutine to test it.

def printMe():

app.run(host='', port=8080)

Does your application require form data as global variables or this is just something you are trying in the course of troubleshooting?

Oh, it’s okay, I’ve fixed it.