Inbox free web based email accounts come with a hefty 2 Gigabytes of storage space and that's just for starters. Inbox's interface is a pleasure to view and use. It is super fast and not cluttered with loads of banner and popup ads. Useful features here include an excellent email compose editor that supports both plain text and rich HTML, integrated search function, folder filters, near flawless spam filtering, flat based address book, thread view massage option and much more.