CRM 2011 - Team Queue Email Address Question

Hi Forum,

I have a question regarding E-mail field on the Queue. Can we put a email address into this fields which has no associated CRM user?

For example below is my case,

1. I have created a 'Team A' whose adminstrator is a CRM user and Default Queue is 'Test Q'. I have assinged security role and added some members to this team.

2. 'Test Q' has a owner field whch is a 'Team A' created in step 1 above.

3. 'Test Q' also have have E-mail field. My question is, can we put a email address here which is not associated with any user in CRM ? what's the best practice to put email address in this field

   where Queue is owned by a Team ? Does Administrator's email of the team has any impact in this field ?

 I also found that Team form also have email field but by default it's not on the form. What's the significant of this field ?

we have CRM 2011 on-premise with update rollup 6.

Thanks for reading.

Cheers,

H.Desai