It can be difficult to make sure you don't miss a meeting invite. TurboHog solves this.
When you are invited to a meeting, it will magically appear in your inbox. Here, you can accept and deny invites. If a meeting is accepted, it shows on your calendar instantly. If you deny it, it disappears and not added to your calendar.
Tasks without a project assigned to them appear in your inbox as well.
A common use case for this is holding tasks that are added quickly on the go. Once you get some time to set projects, priorities, deadlines, etc., you can move them out of your Inbox to another project.