I want to get registrations through an optin and send out newsletters without using a monthly subscription service like aweber.
Must be able to send weekly newsletter or random announcements
Must be able to create a double optin list (ie - must send confirmation email when they register)
I must be able to see the emails, names and other details etc
It must have unsubscribe option
I must be able to send plain text email at the least
Optional: Must be able to send HTML email
No cost (no monthly subscription services or even SMTP services)
This might sound like I am asking for too much. However, I am sure that through some wordpress plugin or another solution, I would be able to do this.