[Mailman-Users] urgent

[Sara Ronald]

Hello,
i'm using your mailman service.and i have some problems or let's 
call them questions. first i have hosted my domain with a new host 
who is using your mailing list. and i already have old e-mails and i 
need to import them to my new host but i don't know how?" they 
are in text file"

2nd question is: how can i send email to my people in the mailing 
list?

also if i import or add the old list i had. can i add them to be 
member automatically so they can receive my new news?

thank you