New Apps Inbox by Gmail (Free*) — A new app by Google has been getting a lot of buzz this week for its approach to reinventing the way that e-mail is managed. The key benefit here is Google using its algorithmic magic to try and group your incoming e-mails into bundles based on categories like Travel, Finance, Purchases, Social, and so forth to make it easier to manage your incoming flow. You can pin individual items to mark them as important, and…