Email Send v3

#Email Send v3 Program. It has a basic GUI to send emails.

from Tkinter import *
import smtplib

class Authen(Toplevel):
    def __init__(self):
        Toplevel.__init__(self)
        self.grid()
        self.Create_Widgets()
    def Create_Widgets(self):
        self.Usertext = Label(self, text = "Username: ")
        self.Usertext.grid(row = 0, column = 0)
        self.Username = Entry(self)
        self.Username.grid(row = 0, column = 1)

        self.Passtext = Label (self, text = "Password: ")
        self.Passtext.grid(row = 1, column = 0)
        self.Password = Entry (self)
        self.Password.grid(row = 1, column = 1)

        self.Submit = Button(self, text = "Submit Credits",
                        command = self.authen_credits)
        self.Submit.grid()
    def authen_credits(self):
        Username_mine = self.Username.get()
        Password_mine = self.Password.get()
        server = smtplib.SMTP('smtp.gmail.com:587')
        server.ehlo()
        server.starttls()
        while True:
            try:
                server.login(Username_mine,Password_mine)
                root.title("SMTP Mail Client GUI")
                #make my screen dimensions work
                w = 500
                h = 1000
                root.geometry("500x1000")
            except smtplib.SMTPAuthenticationError:
                print "Login Failed"





class Application(Frame):
    def __init__(self, master):
        Frame.__init__(self, master)
        self.grid()
        self.entryFrame()
        self.mainFrame()
    def entryFrame(self):
        pass
    def mainFrame(self):
        pass

passcheck = Authen()

root = Tk()
root.mainloop()
root.widthdraw()