I was wondering if processing could read e-mail (probably through stmp or is it smpt?). Also what other information can it read from the internet? How much programming comlplexity does it need for accessing and sending information through the internet?
Processing has a network library (Network / Libraries / Processing.org) that provides similar client and server functionality to the Arduino ethernet library.
There is a third-party Twitter library available from http://mccv.github.com/processing-tweet-stream/.
Generally speaking, at the client end, SMTP is only used to send email. You would usually use POP or IMAP to read email, as at this link - The Coding Train.
Also generally speaking, Processing questions that have nothing to do with the Arduino do not belong on the Arduino forum. There was NOTHING in your question about anything related to the Arduino.
Sorry for not being specific PaulS. Actually I wanted to control arduino with the internet through processing.