Uppercase message fields according to RFC

Author: sqrrrl

gmail/snippet/send mail/send_message.py

@@ -36,9 +36,9 @@ def gmail_send_message():
     try:
         service = build('gmail', 'v1', credentials=creds)
         message = MIMEText('This is automated draft mail')
-        message['to'] = 'gduser1@workspacesamples.dev'
-        message['from'] = 'gduser2@workspacesamples.dev'
-        message['subject'] = 'Automated draft'
+        message['To'] = 'gduser1@workspacesamples.dev'
+        message['From'] = 'gduser2@workspacesamples.dev'
+        message['Subject'] = 'Automated draft'
         # encoded message
         encoded_message = base64.urlsafe_b64encode(message.as_bytes()) \
             .decode()