Added test for empty email and spacing

src/ploomber/cli/cloud.py

@@ -249,21 +249,24 @@ def _email_input():
     settings = UserSettings()
     if not settings.user_email:
         email = _get_input(
-            "Our users enjoy updates, support and unique content "
+            "\nOur users enjoy updates, support and unique content "
             "through email, please add your email, if you'd like "
-            "to register (type email): ")
+            "to register (type email): \n")
         _email_validation(email)
 
 
 def _email_validation(email):
     pattern = r"[^@]+@[^@]+\.[^@]+"
+    settings = UserSettings()
     if re.match(pattern, email):
         # Save in conf file
-        settings = UserSettings()
         settings.user_email = email
 
         # Call API
         _email_registry(email)
+    else:
+        # Save in conf file
+        settings.user_email = 'empty_email'
 
 
 def _email_registry(email):

src/ploomber/cli/examples.py

@@ -232,7 +232,7 @@ def list(self):
         tw.write('\nTo run these examples in free, hosted '
                  f'environment, see instructions at: {_URL}')
         tw.write('\nTo download: ploomber examples -n name -o path\n')
-        tw.write('Example: ploomber examples -n templates/ml-basic -o ml\n')
+        tw.write('Example: ploomber examples -n templates/ml-basic -o ml\n\n')
 
 
 @command_endpoint

tests/cli/test_cloud.py

@@ -445,9 +445,10 @@ def test_email_call_on_examples(tmp_directory, monkeypatch):
     email_mock.assert_called_once()
 
 
-def test_email_called_once(tmp_directory, monkeypatch):
+@pytest.mark.parametrize('user_email', ['email@ploomber.io', ''])
+def test_email_called_once(tmp_directory, monkeypatch, user_email):
     monkeypatch.setattr(telemetry, 'DEFAULT_HOME_DIR', '.')
-    email_mock = Mock(return_value='email@ploomber.io')
+    email_mock = Mock(return_value=user_email)
     api_mock = Mock()
     monkeypatch.setattr(cloud, '_get_input', email_mock)
     monkeypatch.setattr(cloud, '_email_registry', api_mock)