When someone has our plug-in installed in their emails, many of the emails they receive become "interactive", meaning they can interact with them in ways you never could before in email. So, look at your live twitter feed, watch videos, comment on someone's wall, etc.
We wanted to make a way to distinguish those special, interactive "PowerEmails" from other emails when you are looking at your inbox so you immediately know you want to open it.
That's where we need your help. We'd like a design of an icon to show that is simple yet distinct enough that it can't just be copied (like a paper clip, or another generic item).
Examples of we like as they stand out but are simple are Google Drive, Cloze (http://www.cloze.com), Join.Me, Amtrak, etc. Something abstract that pops is really what we're looking for.
The attached screenshots point out where this would live in the email inbox. We started with just a triangle/arrow, but that's way too generic for this. We're looking for creativity - would love your help!