google app engine, Google Apps and custom domain

Question

If you have a google app engine application you want to have on a certain domain for this application, you control this domain but if this domain is used already used for e-mail (not on Google Business Apps), does this mean you have to switch your e-mail to Google Business Apps in order to have this domain for your google app engine application?

Answer 1

As far as I know you have to add the domain to google apps, but you don't have to use google mail.