With the Hubspot mobile app, you can get more done with app-only features like business card scanner and Sales Caller ID, and track dashboards on the go!
If you install the sales extension, you can view and add contacts from your email inbox right into HubSpot. https://knowledge.hubspot.com/connected-email/how-to-install-hubspot-sales#install-the-hubspot-sales-chrome-extension

Here are some how-tos for common tasks in HubSpot: