phpLedMailer

phpLedMailer is a simple, easy-to-use single-mailing-list application. It's very useful if you want to maintain a mailing list for your site, without having to deal with all kinds of nasty setup and complicated administration tasks.

WebDex

A simple contact management system and web-based rolodex. Includes mass mailing of HTML mime messages to lists, export to CSV, full text boolean searches and

PHPlist

PHPlist is designed to assist you to stay in touch with your audience, without flooding them with information they don't want. PHPlist is an essential tool for anyone who is serious about creating, capturing and maintaining an offline audience, and will help you increase traffic to your website.

EasyLetter

A simple newsletter script that uses a text file to store subscribers. One PHP script controls all functions, including sending of messages to the list.

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.

Simple PHP Mailing List

Simple PHP Mailing List" is a powerful yet simple mailing list system that comes complete with double opt-in confirmation and web-based interface for sending

Chipmunk Newsletter

Chipmunk Newsletter is a simply and flexible newsletter script using php and mysql featuring double opt-in and opt-out and a tracker to keep track which people the mail has already been sent to so you can send to remaining subscribers if the script times out.

Announce Mail

Announce Mail is a PHP script to create your own mailing list. It's very easy to install and run. Design of all public pages is fully editable.

WEBinsta Mailing Manager

WEBinsta mailing list manager is built to provide a centralized mailing list/newsletter system for small to medium website. Its simple yet quite powerful. It support the standard subscribe and un-subscribe, remote verification, unsubscribe links, attachments and host of other such features.

MyKazaam Newsletter Manager

Allows users to subscribe to your newsletter list and the admin can send mailings from the admin panel.

CcMail 1.0

A powerful php Mailing List Manager that doesn't require any database or language knowledge. CcMail 1.0 has the features and the ease of use of expensive scripts.

The Polvero Subscriber List

Includes admin panel, auto confirmation, and an installer file. Have your visitors subscribe by inputting their Name and Email which get stored into a DB; and when you're ready to send out the update, it pulls all the results, and sends out the Email to everyone in your list automatically. Admin includes the Emailer Form, and a section to Add, Edit, & Delete Contacts.

Subscribe Me!

A powerful program designed to allow hands-free maintenance while building a mailing list/prospect base! Use the ability to ban e-mail addresses and more.

NP Subscriber

This script includes automatic subscribing/unsubscribing, bad address filtering, banned addresses, message archiving, message previewing, HTML messages and more.

MailIt! 99

Allows you to send out professional looking newsletters, is easy to configure, and has absolutely no ads and more.

Add2it Mailman Free

Multilingual list management that allows visitors to automatically subscribe and unsubscribe to your mailing list. Allows up to ten lists and personalization.

J-Mail

J-Mail is a simple, easy to use newletter management system that allows you to save/retrieve old newsletters, send HTML newsletters, manage multiple lists and more.

Mailing List Manager

Build an integral mailing list service site that will allow your visitors to signup, confirm their registration