Update of the email send Demo Program

DemoPrograms/Demo_Email_Send.py

@@ -1,38 +1,36 @@
 import PySimpleGUI as sg
-# import PySimpleGUIWeb as sg
-# import PySimpleGUIWx as sg
-# import PySimpleGUIQt as sg
 
 '''
-    Copyright 2019 PySimpleGUI.org
+    Learn how to send emails from PySimpleGUI using the smtplib and email modules
+    
+    The GUI portion is simple
+
     Based on a send-email script originally written by by Israel Dryer
+    (Thank you Israel for figuring out the hard part of the stmp and email module calls!)
+    
+    Copyright 2019, 2022 PySimpleGUI
+
 '''
 
+# If you are using a mail service that's not gmail, hotmail, live or yahoo:
+# then you can enter the smtp server address here so you don't have to keep typing it into the GUI
+smtp_host_default = ''
+
 # used for sending the email
 import smtplib  as smtp
 # used to build the email
 from email.message import EmailMessage
 
 # create and send email
-def send_an_email(from_address, to_address, subject, message_text, user, password):
-    # SMTP Servers for popular free services... add your own if needed. Format is: address, port
-    google_smtp_server = 'smtp.gmail.com', 587
-    microsoft_smtp_server = 'smtp.office365.com', 587
-    yahoo_smtp_server = 'smtp.mail.yahoo.com', 587  # or port 465
-
-    # open the email server connection
-    if 'gmail' in user:
-        smtp_host, smtp_port = google_smtp_server
-    elif 'hotmail' in user or 'live' in user:
-        smtp_host, smtp_port = microsoft_smtp_server
-    elif 'yahoo' in user:
-        smtp_host, smtp_port = yahoo_smtp_server
-    else:
-        sg.popup('Username does not contain a supported email provider')
-        return
+def send_an_email(from_address, to_address, subject, message_text, user, password, smtp_host, smtp_port):
     server = smtp.SMTP(host=smtp_host, port=smtp_port)
     server.starttls()
+    try:
         server.login(user=user, password=password)
+    except Exception as e:
+        sg.popup_error('Error authenticaing your email credentials', e, image=sg.EMOJI_BASE64_WEARY)
+        server.close()
+        return
 
     # create the email message headers and set the payload
     msg = EmailMessage()
@@ -42,9 +40,15 @@ def send_an_email(from_address, to_address, subject, message_text, user, passwor
     msg.set_payload(message_text)
 
     # open the email server and send the message
+    try:
         server.send_message(msg)
+    except Exception as e:
+        sg.popup_error('Error sending your email', e, image=sg.EMOJI_BASE64_WEARY)
+        server.close()
+        return
 
     server.close()
+    sg.popup('Email sent successfully!', image=sg.EMOJI_BASE64_HAPPY_JOY)
 
 '''
     important notes about using gmail
@@ -61,33 +65,47 @@ def send_an_email(from_address, to_address, subject, message_text, user, passwor
 '''
 
 def main():
+    smtp_server_dict = {'gmail.com':'smtp.gmail.com','hotmail.com':'smtp.office365.com', 'live.com': 'smtp.office365.com', 'yahoo.com':'smtp.mail.yahoo.com'}
+
     sg.theme('Dark Blue 3')
     layout = [[sg.Text('Send an Email', font='Default 18')],
               [sg.T('From:', size=(8,1)), sg.Input(key='-EMAIL FROM-', size=(35,1))],
               [sg.T('To:', size=(8,1)), sg.Input(key='-EMAIL TO-', size=(35,1))],
               [sg.T('Subject:', size=(8,1)), sg.Input(key='-EMAIL SUBJECT-', size=(35,1))],
               [sg.T('Mail login information', font='Default 18')],
-              [sg.T('User:', size=(8,1)), sg.Input(key='-USER-', size=(35,1))],
+              [sg.T('User:', size=(8,1)), sg.Input(key='-USER-', size=(35,1), enable_events=True)],
               [sg.T('Password:', size=(8,1)), sg.Input(password_char='*', key='-PASSWORD-', size=(35,1))],
+              [sg.T('SMTP Server Info', font='_ 14')],
+              [sg.T('SMTP Hostname'), sg.Input(smtp_host_default, s=20, key='-SMTP HOST-'), sg.T('SMTP Port'), sg.In(587, s=4, key='-SMTP PORT-') ],
               [sg.Multiline('Type your message here', size=(60,10), key='-EMAIL TEXT-')],
               [sg.Button('Send'), sg.Button('Exit')]]
 
     window = sg.Window('Send An Email', layout)
 
-    while True:  # Event Loop
+    while True:
         event, values = window.read()
         if event in (sg.WIN_CLOSED, 'Exit'):
             break
         if event == 'Send':
-            if sg.__name__ != 'PySimpleGUIWeb':     # auto close popups not yet supported in PySimpleGUIWeb
+            if values['-SMTP HOST-']:
                 sg.popup_quick_message('Sending your message... this will take a moment...', background_color='red')
                 send_an_email(from_address=values['-EMAIL FROM-'],
                               to_address=values['-EMAIL TO-'],
                               subject=values['-EMAIL SUBJECT-'],
                               message_text=values['-EMAIL TEXT-'],
                               user=values['-USER-'],
-                          password=values['-PASSWORD-'])
+                              password=values['-PASSWORD-'],
+                              smtp_host=values['-SMTP HOST-'],
+                              smtp_port = values['-SMTP PORT-'])
+            else:
+                sg.popup_error('Missing SMTP Hostname... you have to supply a hostname (gmail, hotmail, live, yahoo are autofilled)')
+        elif event == '-USER-':     # as the email sender is typed in, try to fill in the smtp hostname automatically
+            for service in smtp_server_dict.keys():
+                if service in values[event].lower():
+                    window['-SMTP HOST-'].update(smtp_server_dict[service])
+                    break
 
     window.close()
 
-main()
+if __name__ == '__main__':
+    main()