Dashboard deployment

Hi All,

I have a situation where my client is handling the Power BI service and I need to publish the dashboard in their workshop.

I know that they need to provide me Contributer access.

Now while publishing, can I use my company's domain or do I need an account from their company domain to publish it?

eg. my company's domain - yahoo.com, client company's domain - gmail.com

Now to publish my dashboard on their workspace, do I need to contribute as 

[email protected] or [email protected] ?

Thanks,

Kharansu