Customer relationship management (CRM) tool HubSpot helps thousands of businesses manage their leads and turn them into users. With the HubSpot Sales Chrome extension, you can get that marketing power in your inbox. When viewing an email, for example, you can get more details about the sender, such as facts about the company they work for, and add the contact to HubSpot in one click. Save emails you send as templates for quickly responding to similar emails, see who has opened your emails, log emails in the HubSpot CRM by clicking a checkbox, and get other HubSpot sales features within Gmail without having to switch to another tab or app.

HubSpot Sales Price: Free