Test it by requesting for directions to a particular place by putting from and to location in your subject line and sending it to maps@inboxfever.com. Within seconds you will get a map in your inbox showing you the route. An another example, send any document attachment to pdf@inboxfever.com and watch it return to you in seconds as a PDF. You can control all your web applications simply by sending an email. There are no user interfaces or logins. Optionally though, you can sign-up for an account on InboxFever to better statistics and control. And it works with all email services. #. When to use such service? Such email-powered applications could be quite useful when a website is blocked in workplace or school/college.It also provides a safe way to retrieve information when you are behind a firewall or VPN. Another use can be considered when you have email connection on your mobile but the internet browsing isn’t possible.