I screwed up while creating the email accounts for Algoists.com in that I used long-form names (i.e. vaclav.turacek@algoist.com instead of vac@algoists.com).  I deleted all of the accounts then recreated them using the short form names and tried to use the long-form names as alias.  Unfortunately, this lead to an "Alias Email Id already exists." error.

Is there a way to permanently remove the deleted accounts?  Alternately, if I delete the entire Algoists.com account will I be able to recreate it from scratch and and reuse all of the deleted emails?