Using affiliate links in email

I need some help setting up affiliates. I am using Prosites and New BLog Templates.
On my multisite the sign-up for a blog is on a subsite: promo.usingessentialoils.com

I expect that subscribers will NOT use affiliate banners on their sites but rather will send emails to promote our sites. Questions:

1. Will affiliate work ok with this email approach?
2. Is the signup on a subdomain rather than main site a problem?
3. As super Admin, is there a list of affiliate links?
I was trying to help someone locate their affiliate link - but I can only access my personal one even if I am in their dashboard.