PHPMailList  

PHPMailList is a powerful, yet simple to use, email announcement script. It allows people to subscribe/unsubscribe through a web-based form, checking for valid addresses. The web-based administration module allows the owner to send messages to the list, subscribe/unsubscribe people, view the list of subscriber, and configure the script. Installation is simple, and configuration of confirmation messages, welcome messages and goodbye messages, as well as signatures are all maintained through the password protected administration section

Hosting Requirements: Unix, Win32; PHP 4.0.2+
Price: Free

   EternalMart Mailing List Manager  

This script lets your visitors add their email addresses to your mailing lists. The email addresses are stored in MySQL database. You can use web-based control panel to send your messages to your subscibers. It is suitable for new products announcements, newsletters or website update. You can maintain your mailing lists and subscribers or send out email to your subscribers via web-based control panel

Hosting Requirements: Unix/Linux; PHP 4
Database: MySQL
Price: Free

   MyMail  

MyMail is an advanced mailing list script built using PHP and MySQL. Even though MyMail is still in BETA stages it is extremely stable and able to send your emails out to your list. Some of MyMail's advanced functions are; Server Load Manager, Full archive System, Import/Export Function, Email validation, List Clean, Welcome messages, easy unsubscribe and many more. MyMail requires a server with MySQL and PHP. MyMail works with both PHP3 and PHP4 although we have not thoroughly tested with PHP3. MyMail is even better because it can run on Windows servers aswell as Unix/Linux servers.

Hosting Requirements: Unix/Linux, Win NT; PHP
Database: MySQL
Price: Free

   SendStudio  

Powerful, all-in-one email marketing software that's incredibly easy to use and a snap to install. From building a list and creating personalized newsletters, to measuring campaign results and sending automated follow up emails -- with SendStudio you can manage it all using only your web browser! Best of all, SendStudio can easily be integrated into your own (or your client's) existing website in just minutes!

Hosting Requirements: Unix/Linux
Price: $179

   PHP Mailing List  

This mailing list script allows your visitors to subscribe and unsubscribe to one or more mailing lists through forms.

Hosting Requirements: Unix, Windows
Price: Free

   PHP NewsletterRequest  

Let your visitors sign up to receive your newsletter direct from your website in a form. Easily customisable to include any message you want. Features include: Javascript error checking, mass submission prevention, direct user to a thank you page. and more ...

Hosting Requirements: Unix, Windows
Price: Free

   RGNMailer  

RGNMailer is a powerful mass mailing manager that can handle well over 100 users in its mySQL or flat file database. With authentication features, mail archiving and incredible use of the PHP language, RGNMailer is a dominant PHP program for various organizations and users. Features: User Authentication - Password Retrieval System - Email-Remove System - Archival of all sent messages - Easily configurable to your web sites design - Custom Welcome message upon subscribing - Over 100 users supported per database.

Hosting Requirements: Unix; PHP
Database: MySQL, Flat File

   /email_list_lite/  

/email_list_lite/ is an automated email list manager that will manage the members of your newsletter/online promotion lists. Your list members confirm their addresses before they are added to prevent unwanted Spam or unwanted subscriptions, additionally the "Welcome to list" message is easily customisable. Features: auto install & setup - import existing email lists - add join/leave box with just one line of code- self manages email list online - automatic removal of none activated emails and more...

Hosting Requirements: PHP
Database: MySQL
Price: Free

   MindFab SoapBox  

SoapBox provides a Web-based email application that allows you to stay in touch with hundreds and even thousands of individual contacts. MindFab SoapBox lets you: Create contacts - Divide your contacts into lists based on criteria about them - Create personalized messages you can send to any list - Manage your contacts via the web - finally, a central, easy to access location for contact information - corporate or personal use the power of the web to reach your contacts regularly "get in front" of customers - Support either subscriber or query-based modes of contact management and messaging - "Rip" web pages from your site and email them to your contact list - a "push" vs. a "pull" to regularly reach your contact list - Export your contacts to other applications, such as bulk mailers.

Price: $20/month

   C2 Newsletter  

Allows you to create different newsletters for your Site (e.g. "New Products", "News"...) and to send them as plain text or mime-encodet mail to your users. (PHP, PEAR, MySQL/or supported by PEAR::DB) Includes a class to easy add and remove subscriber

Hosting Requirements: PHP
Database: MySQl
Price: Free (GPL)