This is a great idea. I have been frustrated to no end by accidental clicks of mailto links, to the point where I believe they should be banished and no good webmaster should use them.

That aside, this script almost solves my problem completely. It would get five stars if I used gmail or yahoo regularly, which I don't. Or if the script supported inbox.com, my preferred webmail server, which is obscure enough that I don't ever expect it to.

Even so, this script redirects that annoying mailto link to harmlessly open a new tab with gmail's login screen, rather than spend precious time and resources trying to open an Outlook that has never been configured.