Hey, thanks for the response. If you want some feedback:
Yeah, I think you should add something to not show our own profiles (I never forget who I am!). This actually reminds me of my friend's dumbphone. When he goes into his Sent Mail folder, and selects a message, and tries to add a contact (the person he send the message to), the phone tries to add his own number. While it makes sense logically, in the context it's not very useful.
Two other issues I have with it are on a design level for the new Compose profiles. At least in the classic theme, now the white Rapportive appears over the blue gmail send. I'm not sure how much of that you can manipulate, but shifting the blue over to the left (kind of like what's done with reply) would be preferable.
Also, on Reply, there's an alignment problem with the Share Rapportive link up top - it's slightly shifted to the right, so that it doesn't seem to align.
Lastly, I found a minor bug. Your Share Rapportive button appears fine, but I'm guessing you got rid of it (or Gmail automatically does) if the window is minimized small enough. The problem is, that it doesn't re-appear, even if you change screens. I haven't done any heavy testing on this, but the first two brief tests seem to give these results.
Sorry if I'm wasting your time - hopefully this helps. Send me an email if you're not sure what I mean and I'll give you some screenshots when I get home.
Edit: Claiming makes sense. I forget I send emails from my Gmail as more than one address. Though, can you use the emails to check via LinkedIn or something, to see if the sent user email corresponds to the same account as the original email, and if so, display the sender 1 up? Not sure how efficient that is - just brainstorming solutions since I doubt the majority of people will think to claim their emails.