If, by chance, you use Google's e-mail service for work, this is the ideal tool for managing the flow of e-mails that you can exchange with customers, colleagues, collaborators, partners and suppliers.
This Chrome extension is the classic freemium service.http://get.streak.com/5dollar
HOW STREAK WORKS
Once the extension of Streak is loaded on Chrome, it will be necessary to enter into your Gmail account and activate it.
Once this has been done, you will have to create your own pipeline (pipeline / pipeline, ed), that is the path along which the "Box" must proceed (a virtual box containing the exchange of messages, tasks and annotations relating to each individual contact, ed).
In doing so you can take advantage of the models already prepared or use the "Blank" option that allows you to customize the pipeline to make it more appropriate to your needs.