Graph.one

Your inbox already knows who you know.

Graph.one is a research and data analysis tool that maps your professional network from email and calendar data, so you can find warm intros to investors, talent and customers instead of cold messaging strangers.

You can look up who you know at any company or in any city.

That makes it a quick way to spot the shortest path to a person you want to reach, whether that is an investor, a hire or a prospect.

There is a social side too.

When friends join Graph.one, you can explore each other's networks and see who they know that you do not.

Graph.one also checks which of your contacts are active Product Hunt users, a small extra for founders and marketers doing outreach.

The catch is access.

The tool works from your email and calendar, so you need to be comfortable connecting both.

The map is only as good as your correspondence history, so it will show more if you have been in touch with a lot of people.