Microsoft has made available Outlook.com Premium, hoping to attract clients with its new email subscription service.

Available in the US, Outlook.com Premium is available for $50 per year and offers you an ad-free inbox, custom domain support for up to five users, info sharing between those people. You won't get the custom domain itself with your subscription, but Microsoft can do that for $10 per year.

Outlook.com syncs your own personalized email domain (such as Jane@cdrinfo.com) with your Outlook.com mailbox (as well as hotmail.com, live.com, or msn.com), and removes banner ads from your Outlook.com mailbox. Your Outlook.com Premium mailbox automatically syncs with your existing Outlook.com mailbox, so all your emails can be viewed in the same mailbox - regardless of whether they are sent to your personalized email address or to your Outlook.com email address.

You can also invite up to four other people to join your personalized email domain so you can share calendars, contacts, and documents. Sharing is setup automatically between the people you invite to join your personalized Outlook.com Premium subscription.