Domains provided by Xara do not come with an email account. Log into your Xara online account. You have the M-Hosting package which comes with the purchase of Xara (or an upgrade or a 1 year renewal). There is no webmail account.

I also have a Magix Online package which does have a webmail account associated with my domain name. This is a legacy thing, only with Magix online, not with Xara online.