How to trigger a PHP Script with an Email?

Question

Goal:

• on an incoming email, the system should call a php script.

Problems:

• dont do it with the help of cronjobs (because its kind of inefficient)
• smtp2web is (was) a web-service, that exactly seemed to handle that - but doesnt work no more (?)

so if you know web-services similar to smtp2web.com or some other strategy - please let everybody know. Thank you!

Answer 1

If you on a linux box, setup an alias in the aliases file:

alias: "|/path/to/script/script.php"

The script will run whenever an email is sent to the alias@domain.com

The aliases file is in: /etc/