HubSpot Sales is a Chrome extension that offers email tracking, CRM integration with Gmail, and sales productivity tools. It connects to Gmail to help users find more leads, engage with them, and close deals efficiently. With over 30,000 customers in 90 countries, HubSpot is a popular choice for growing businesses. The extension includes free features like email tracking and CRM for Gmail, as well as paid features like automated personal outreach. To learn more about HubSpot Sales, visit their website at https://www.hubspot.com/products/sales.