Yothalot-PHP is the php extension for the Yothalot framework as documented here.

This library is created and maintained by Copernica (www.copernica.com), and is used inside the MailerQ (www.mailerq.com), Yothalot (www.yothalot.com) and AMQPipe (www.amqpipe.com) applications. MailerQ is a tool for sending large volumes of email, using AMQP message queues, Yothalot is a big data processing map/reduce framework and AMQPipe is a tool for high-speed processing messages between AMQP pipes

Do you appreciate our work and are you looking for high quality email solutions? Then check out our other commercial and open source solutions:

• Copernica Marketing Suite (www.copernica.com)
• MailerQ on-premise MTA (www.mailerq.com)
• AMQPipe (www.amqpipe.com)
• Responsive Email web service (www.responsiveemail.com)
• SMTPeter cloud based SMTP server (www.smtpeter.com)
• PHP-CPP bridge between PHP and C++ (www.php-cpp.com)
• PHP-JS bridge between PHP and Javascript (www.php-js.com)
• Yothalot big data processor (www.yothalot.com)

In order to install this extension you'll first need to install the yothalot library on your system. As this is a dependency of this extension. After this it is as easy as running make and sudo make install.