How to effectively e-mail a professor I met briefly about collaborative work?
I always suggest being a bit more succinct, and mentioning (but not delving into!) the technical aspects of your work. How about this:

Dear Professor XYZ,
This is [name]; we met at AAA conference in TTT a couple of days ago. As you may recall, I am working on [xxx] and you suggested that your post-doc could get me started in your testbed for my [yyy] project.
I'm very eager to pursue this. Could you please introduce me to your post-doc? I'd be happy to set up a call or provide any information you might need.
Thanks in advance; I really appreciate the opportunity,
Kashan