I think email is overwhelming for most high-communication people, but also that most people are kind of stuck with it, and there's a lot of friction in switching between platforms. Gmail is certainly the default platform at the moment, but not because better ones don't exist.<p>Trying to build a better email seems tough. Unified inbox is kind of interesting. Gmail as a platform is very interesting -- I've been using apps like StreakCRM and find them very compelling vs. standalone apps.<p>Lighter weight and social messaging (facebook, sms, whatsapp, snapchat, etc) seem to be making an impact on messaging, particularly for younger folks, and i bet cannibalize email, both in terms of volume and time spent.