tinyCampaign is a simple and lightweight newsletter system.
tinyCampaign is a simple and lightweight newsletter system built on a nice Bootstrap and the Liten framework. You can send out simple and beautiful HTML emails with ease.
Must have shell access to install and update. Full installation instructions can be found here: https://tinyc.7mediaws.org/knowledge-base/installation/
dracMail is a webmail interface built using PHP, ExtJS (JavaScript framework), MySQL and IMAP. Features include: Rich UI, WYSIWYG editor, HTML mail composing and message caching.
Gumnu is a mail client for low bandwith (WAP enabled) mobile devices written in PHP. It has a framework for separating the (WML,HTML) interface from the rest of the project. It uses gettext for i18n, IMAP/SMTP provided by php, MySQL for settings.