The Elegance of Inbox and Crawler
I have been using http://www.inbox.com/ for a long time since 2004. They do have a new domain called http://www.crawler.com/ since 2006. I also remember that by default signups outside US and Canada just get 2 Gigs of storage space. But in 2007 they had a photo album contest. Being a winner of the contest I got 1 Gig storage space added to my account.
Just wanted to share another interesting feature of Inbox.com. You can login to Inbox.com by just giving the username (though they stipulate firstname.lastname@example.org). Also you can login to your crawler account from Inbox.com homepage but you need to specify @crawler.com too. The vice-versa applies from Crawler.com. I believe by default the domain name is appended when you attempt to signon without giving the full email address.