BFT Autoresponder is a sequential autoresponder plugin. It alows scheduling unlimited number of emails, members, import/export and customization of the emails.
The HTML code of the registration form can be placed anywhere in the blog or in some other site.The plugin allows double opt-in and attaches unsubscribe link to all messages.
BFT Autoresponder can be used to:
To send automated marketing campaigns, tutorials and other content to your visitors.
To increase visitor loyality, readership and profits
To avoid paying expensive monthly fees for the hosted autoresponder services.
More Info: http://calendarscripts.info/autoresponder-wordpress.html