emailing text from flash

Be very careful what you allow to be sent to your script. Most of those tutorials do not go over basics like injection. If you follow some tutorial like this which seems exactly like what you wish, they don't do any sanitization on the data being send. That opens the doors for people to hijack your form and inject data.

For example, either Flash or the server-side script (PHP/ASP/etc) needs to validate each piece of information.

One example is validating that you have a proper email address and the user is not trying to inject extra email addresses. A simple example would be using a regular expression in Flash to validate the email. Quickly:

e.g. (email_txt would be a TextField on screen to enter an email in):

if (!email_txt.text.toString().match(/^[\w.-]+@\w[\w.-]+\.[\w.-]*[a-z]{2,3}$/i)) {      // invalid email, didn't match check, warn user... }

If you don't check, someone could piggy back another email address on there, e.g.: me@somewhere.com; someonelse@somewherelse.com; morepeople@moreplaces.com.. Then your script can be hijacked and used for spam purposes, or worse..

Just be careful.