diff --git a/hamstertools/__init__.py b/hamstertools/__init__.py
index 7c3525e..a87d525 100755
--- a/hamstertools/__init__.py
+++ b/hamstertools/__init__.py
@@ -402,7 +402,9 @@ def _get_kimai_mapping_file(path):
 @click.option('--mapping-path', help='Mapping file (default ~/.local/share/hamster/mapping.kimai.csv)')
 @click.argument('username')
 @click.argument('api_key')
-def sync(username, api_key, mapping_path=None):
+@click.option('--just-errors', 'just_errors', is_flag=True, help='Only display errors')
+@click.option('--ignore-activities', is_flag=True, help='Ignore missing activities')
+def sync(username, api_key, just_errors, ignore_activities, mapping_path=None):
     """
     Download customer / project / activity data from Kimai
     """
@@ -428,9 +430,9 @@ def sync(username, api_key, mapping_path=None):
         'X-AUTH-TOKEN': api_key
     }
 
-    customers = requests.get(f'{kimai_api_url}/customers', headers=auth_headers).json()
-    projects = requests.get(f'{kimai_api_url}/projects', headers=auth_headers).json()
-    activities = requests.get(f'{kimai_api_url}/activities', headers=auth_headers).json()
+    customers = requests.get(f'{kimai_api_url}/customers?visible=3', headers=auth_headers).json()
+    projects = requests.get(f'{kimai_api_url}/projects?visible=3', headers=auth_headers).json()
+    activities = requests.get(f'{kimai_api_url}/activities?visible=3', headers=auth_headers).json()
 
     found_customers = []
     found_projects = []
@@ -441,7 +443,7 @@ def sync(username, api_key, mapping_path=None):
 
         matching_customers = list(filter(lambda x: x['name'] == row[0], customers))
         if row[0] in found_customers:
-            click.secho("Skipping existing customer '{0}'".format(row[0]), fg='green')
+            just_errors or click.secho("Skipping existing customer '{0}'".format(row[0]), fg='green')
         else:
             if len(matching_customers) > 1:
                 click.secho("More than one match for customer '{0}'".format(row[0]), fg='red')
@@ -450,7 +452,7 @@ def sync(username, api_key, mapping_path=None):
                 click.secho("Missing customer '{0}'".format(row[0]), fg='yellow')
                 continue
             else:
-                click.secho("Found customer '{0}'".format(row[0]), fg='green')
+                just_errors or click.secho("Found customer '{0}'".format(row[0]), fg='green')
                 found_customers.append(row[0])
 
         project_str = ':'.join(row[0:2])
@@ -461,7 +463,7 @@ def sync(username, api_key, mapping_path=None):
         )
 
         if project_str in found_projects:
-            click.secho("Skipping existing project '{0}'".format(project_str), fg='green')
+            just_errors or click.secho("Skipping existing project '{0}'".format(project_str), fg='green')
         else:
             if len(matching_projects) > 1:
                 click.secho("More than one match for project '{0}'".format(project_str), fg='red')
@@ -470,12 +472,15 @@ def sync(username, api_key, mapping_path=None):
                 click.secho("Missing project '{0}'".format(project_str), fg='yellow')
                 continue
             else:
-                click.secho("Found project '{0}'".format(project_str), fg='green')
+                just_errors or click.secho("Found project '{0}'".format(project_str), fg='green')
                 found_projects.append(project_str)
 
+        if ignore_activities:
+            continue
+
         activity_str = ':'.join(row)
         if activity_str in found_activities:
-            click.secho("Skipping existing activity '{0}'".format(activity_str), fg='green')
+            just_errors or click.secho("Skipping existing activity '{0}'".format(activity_str), fg='green')
         else:
             matching_activities = list(filter(
                 lambda x: x['name'] == row[2] 
@@ -488,7 +493,7 @@ def sync(username, api_key, mapping_path=None):
             elif len(matching_activities) < 1:
                 click.secho("Missing activity '{0}'".format(activity_str), fg='yellow')
             else:
-                click.secho("Found activity '{0}'".format(activity_str), fg='green')
+                just_errors or click.secho("Found activity '{0}'".format(activity_str), fg='green')
                 found_activities.append(activity_str)
 
 @kimai.command('import')