Autoresponders are a common product or service owned by marketers, and sometimes you will come across the phrase "php autoresponder." What is this?

PHP is a programming language, so at one-level this means autoresponder software created using the php programming language.

But who cares about that?

PHP is popular, and what this really means is that the autoresponder script can be modified by someone who knows php. That is not too difficult. Anyone...