Quickly drill down by sender or label in Gmail.
This script adds two abilities to Gmail:
1. Search messages from sender or label
In a message list, if you click the email sender or label, you'll be taken to a listing of all emails from this sender or with this label.
2. Show top sender domains
When you're at a messages list, we show all the top-level domains of the senders in the current view, sorted by number of emails. This is useful for seeing who is sending you a lot of email!
Upstream: https://gist.github.com/szhu/1d816086307c5de02bc9a2bb1cf01fe0
