script.py

import smtplib
from tkinter import *


def send_message():

    address_info = address.get()

    email_body_info = email_body.get()

    sender_info = sender_address.get()

    password_info = password.get()

    server = smtplib.SMTP('smtp.gmail.com', 587)

    server.starttls()

    server.login(sender_info, password_info)

    print("Login successful")

    server.sendmail(sender_info, address_info, email_body_info)

    print("Message sent")

    address_entry.delete(0, END)
    email_body_entry.delete(0, END)
    password_entry.delete(0, END)
    sender_address_entry.delete(0, END)


gui = Tk()

gui.geometry("500x500")

gui.title("Email Sender App")

heading = Label(text="Email Sender App", bg="yellow",
                fg="black", font="10", width="500", height="3")

heading.pack()
gui.configure(background="light blue")

sender_address_field = Label(text="Sender's Email :")
sender_address_field.place(x=15, y=70)

sender_address = StringVar()
sender_address_entry = Entry(textvariable=sender_address, width="30")
sender_address_entry.place(x=15, y=100)

sender_password_field = Label(text="Sender's Password :")
sender_password_field.place(x=15, y=140)

password = StringVar()
password_entry = Entry(textvariable=password, width="30")
password_entry.place(x=15, y=170)

address_field = Label(text="Recipient Email :")
address_field.place(x=15, y=210)

address = StringVar()
address_entry = Entry(textvariable=address, width="30")
address_entry.place(x=15, y=240)

email_body_field = Label(text="Message :")
email_body_field.place(x=15, y=280)

email_body = StringVar()
email_body_entry = Entry(textvariable=email_body, width="30")
email_body_entry.place(x=15, y=320, height="30")

button = Button(gui, text="Send Message", command=send_message,
                width="30", height="2", bg="grey")

button.place(x=15, y=400)

mainloop()