Gmail co-pilot is a Chrome Extension which is a mini-CRM that lets you see a snapshot view of your email contact’s profile information, and any past email conversations you have had with that contact. This helps you to respond intelligently and helps you dramatically cut down your search time when you are looking for past email conversations with your email contact.
With this extension, you can immediately view the profile information of your email contact. You can even make private notes about the contact (follow up notes, support notes, etc.) and also setup reminder alarms for the same. Apart from the conversation history, you can also get a list of all documents and attachments related to that contact.
Install this extension and have a mini-CRM running right from your Gmail account! Extremely simple and powerful.