sendgrid/sendgrid-nodejs — pull request #89 by timhaines (2013-09-18 00:38:55+00:00)
Title: Show the error's message

I don't know what error.data is, but it wasn't populating the error's message for me. This fix does.

Fixes issue #88

FWIW: Another way to generate an error is to use a to: that's not an email address.