add a simple interface function

sendmail.py

@@ -7,6 +7,13 @@ OUTPUT_DIVIDER = "The message was:"
 OUTPUT_DIVIDER_BAR = "=" * len(OUTPUT_DIVIDER)
 
 
+def sendmail(to_addr, from_addr=None, subject=None, body=None):
+    msg = SendMailMessage(to_addr, from_addr=from_addr, subject=subject, body=body)
+    msg.send()
+    return msg
+
+
+
 class SendMailMessage:
 
     def __init__(self, to_addr, from_addr=None, subject=None, body=None):
@@ -17,7 +24,7 @@ class SendMailMessage:
 
     def send(self):
         msg = self.encode()
-        sendmail(msg)
+        _run_sendmail(msg)
 
 
     def encode(self, *args, **kwargs):
@@ -37,7 +44,7 @@ class SendMailMessage:
 
 
 
-def sendmail(msg):
+def _run_sendmail(msg):
     cmd = ("sendmail", "-t", "-oi")
     res = subprocess.run(cmd, input=msg, stderr=subprocess.PIPE)
     try: