1) let say that I have many websites.
Can I have one email list for all my websites?
Or it has to be one list per site?
2) Do I have permission to send to my subscribers emails from whatever email address I want?
or only from a specific email address?
and what if I want to change the email address?
do they have to re-opt-in in order to receive emails from a different address?
3) when somebody optins to my list. what exactly does that mean?
Do I have the right to do whatever I want with his email address?
Are there any legal restrictions?