I have written some code which allows orders to be sent to a certain shipping company ready for the labels to be printed off.
I have currently added the code to the checkout_success page to get processed just before the confirmation emails are sent out.
I would like to package this up into a module for others to use, however I don't feel comfortable asking users to open files and edit them. Is there another way to add a module which will get processed when an order is made?
Thanks
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