Let's be honest. Email is a mess. Did you ever try to get your email threads and material straight on one specific focus? With multiple people and rampant discussions, it's a mess.
Lots of apps aim at getting the team to work smart. But none of them cracked it with email. Best apps let you comment emails and attachments only, which is good, but not good enough.
But ccGenie did crack it.
Being email centric (hell, almost all job contexts are email centric, anyway) ccGenie does not require changing the way you work.
On a specific topic (e.g. a project) ccGenie let's you open a Room where you can send all your emails on that topic (a Room has its own email address for that purpose). And, of course, you can cc/bcc all your emails to the Room.
The genie inside ccGenie literally cleans your emails so you get a clean email history (so you can read it by subject or by date), text is clean, your attachments And links are stored the proper way. You can take Notes and you can tag everything.
And, of course, you can share all of this with people of your choice. They, too, can cc/bcc emails relevant to the Room.
ccGenie is currently on Beta, try it and enjoy it as I do.
An excellent (long) interview of Evernote's founder: Phil Libin.
Jim Dalrymple's take on the next OS X.
The story behind a perfect product.