DPOST - reliable emailer for web sites (the installation guide - see at the bottom!).
Just mailer, that able to satisfy needs of any small or middle size web-site, written in any language. Any web site can use it. Web site master installs DPost easily, using instructions. No scala knowledge required from Web Master. PHP and any other web-site languages supported. **Persistence (for e-mails) supported at by PostgreSQL **