Close.io's new inbox feature is impressive. Great for when you just want to turn the sales crank. See here:http://blog.close.io/beta-testers-to-opt-in-to-inbox …
I know there are plugins that one can use with Gmail to approximate this.
You can add location information to your Tweets, such as your city or precise location, from the web and via third-party applications. You always have the option to delete your Tweet location history. Learn more
I know there are plugins that one can use with Gmail to approximate this.