Is there a remote desktop management tool that I can email to people? [closed]

UltraVNC has a single click remote desktop client.

You simply email the client software with your correct IP setup and they only have to click to connect to your computer. For more information read this Lifehacker article on how to set it up

Note: this solution is free

I recommend Teamviewer, since it's free (for non-commercial usage) and let's you email custom invitations

Some interesting features

Works behind firewalls

The major difficulties in using remote control software are firewalls and blocked ports, as well as NAT routing for local IP addresses. If you use TeamViewer you don't have to worry about firewalls: TeamViewer will find a route to your partner.
Browser based access

On the road and need to control a remote computer? Why don't you use TeamViewer Web Connector? The purely html and flash based solution can be used from nearly any browser and operating system.

Remote support without installation

With TeamViewer you can remotely control any PC anywhere on the Internet. No installation is required, just run the application on both sides and connect - even through tight firewalls.