A Gmail API that runs using a cron job is already in place.
It searches through incoming emails for three different emails and has three different actions depending on what the email is. It identifies these emails by the subject line.
What is needed?
One of the emails action needs to be changed to another email action. Therefore the code will still search for the three emails, but two emails will have one action and one email will have one action.
For anyone that is good with PHP it will be very quick to complete.
Don't hesitate if you have any questions.