I did a quick search in discussions and nothing came up for svg support in emails. I found a link with a very nice support graph. In that article the writer does a very nice job recording the down falls and fall back testing, amoung other very good to know facts.

I wanted to open it up in Litmus discussions to see two things.
1. Has anyone in this community had any success using SVG's in emails?
2. Have you found any documentation for Email clients future support?

It would be nice to start utilizing these very scalable, retina-ready images!

Thanks!