API - allow EMAIL_URL without authentication - fix #127

fittrackee/emails/email.py

@@ -110,7 +110,8 @@ class Email:
         with self.smtp(
             self.host, self.port, **connection_params  # type: ignore
         ) as smtp:
-            smtp.login(self.username, self.password)  # type: ignore
+            if self.username and self.password:
+                smtp.login(self.username, self.password)  # type: ignore
             if self.use_tls:
                 smtp.starttls(context=context)
             smtp.sendmail(self.sender_email, recipient, message.as_string())

fittrackee/emails/utils_email.py

@@ -9,7 +9,9 @@ def parse_email_url(email_url: str) -> Dict:
     parsed_url = parse_url(email_url)
     if parsed_url.scheme != 'smtp':
         raise InvalidEmailUrlScheme()
-    credentials = parsed_url.auth.split(':')
+    credentials = (
+        parsed_url.auth.split(':') if parsed_url.auth else [None, None]
+    )
     return {
         'host': parsed_url.host,
         'port': parsed_url.port,