ADbNewsSender is an easy to install and use php based newsletter script. You can use it to manage multiple newsletters. It is using double opt in and supports MySQL/MariaDB and PostgreSQL. You can also present a web archive to your website's visitor.
Please note that the development has been discontinued. You can still download the software, but you won't receive any support or updates.
A powerful Newsletter/ Mass Mailer script with built-in ftp client and wysiwyg editor. Ability to set custom attributes for members, queue and send mails at a later time. Easy database backup. Easy integration with the web template.