SendBlaster 1.6 is a free program to compose and send bulk email. This program allows you to use email as a marketing tool to attract customers, by sending them personalized content. If you want to use this software in conjunction with an opt-in form in your site, the author gives you three different free PHP and CSS mail newsletter subscription modules for installing in your website. They can be used with SendBlaster. You can download them from http://www.sendblaster.com/free-bulk-emailer-download/free-optin-formail-scripts-mailinglist-subscription/. The Free Edition of SendBlaster can set up to 100 messages for each mailing and allows you to manage 2 mailing lists. The registered version has no limits. SendBlaster´s interface will show you three main categories, with different menus.
The "Messages" section will allow you to compose a new message, send it or view previous mailings. "List and Addresses" allows you to manage your contacts, import or export data, define a blacklist, process bounced messages, new subscriptions or cancellations.
"Settings" will let you personalize your databases and protect them with a password.