The way we do it is to have a template Word document that we copy from and paste into the email template. Not ideal, but it lets us standardize our welcome emails. Would be nice if Citrix would create a place for us to drop in various "Welcome" Templates. Doesn't seem too hard to implement.
It would be nicer if they allow us to change the name of the person who sends the welcome email to avoid end users to reach that person only but the helpdesk or any department on charge of further assistance. Voting 1+ for this feature