After Microsoft recently ended custom domain support for one of their primary free email services; Outlook.com, a large number of Microsoft Outlook users are now switching over to other free web-based email service alternatives and Banckle.Email is allowing those users to create free 5 custom domain mailboxes using their free plan which will never expire and they can upgrade this plan if they need more domains. Banckle also provides a web email API allowing users to build up their own email applications and carry out all Outlook tasks. If you are running an online business, you can easily setup Banckle.Email as your back-end email server by configuring MX records of your website and you are good to go.