outlook premiumMicrosoft is asking select users to pay $3.99 per month for premium email features like custom email domains and an ad-free inbox, according to a landing page uncovered by Thurrott.

Outlook.com Premium, which began invite-only trials last month, gives subscribers five personalized email addresses with custom domains, better calendar sharing and removes ads from the Outlook experience.

However, it’s only available to invited users.

Outlook Premium features.
Outlook Premium features.

The trial program was initially rolled out as a free add-on for select Office 365 Home users, but Microsoft is expanding the trial so you can access the special program without paying for a $100 per year subscription. The program is also different from the simple ad-free Outlook option, which is widely available for $20 per year.

Any Outlook user in the pilot program will get the service for a year for free. After that, it’s $3.99 per month, which is slightly more than the simple ad-free version but half the cost of Office 365 Home for users who don’t need Word, Excel and Powerpoint.

Microsoft is working with GoDaddy to provide the personal domain names, which allow users to pick their own replacement for @outlook.com, @live.com or @hotmail.com. Microsoft previously offered custom domians in Outlook.com, but hasn’t accepted new signups for the program since 2014.

If you have an Outlook account, you can head over to this page and sign up for the next round of invites.

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