Wordpress Plugin: Customizable autosended (wp-cron) newsletters for each user, using PHP directly on the newsletter (thought to use user_meta).
- Setup multiple newsletters.
- Different send modes include manual, diary, weekly and monthly.
- Custom newsletter content, template using php directly and all wp functions.
- $user (newsletter receiver) object available in template.
- User can configure to receive newsletter in it's profile edit page.
- Uses wp_cron and wp_mail, no extra configuration on the server is needed.
More info in http://wordpress.org/extend/plugins/personal-newsletter/