subscribe by email - multi-email import unavailable

Hi,
We are using subsribe by email - upgraded Subscribe2; which worked very well thanks.

BUT,

We'd like the ability to import a csv of contacts - is this possible? how?

and

We'd like the ability to manually add multiple email addresses in the Add Subscription field.

I've tried different deliminators, space - comma - semi- colon but not luck. the field simply grabs the full entry