Say for example if I receive an email to subscribe@mydomain.com, is there a way I can trigger that to make a GET or POST call to my own server?
Another use could be email a link and have my server download the link automatically if the email meets certain criteria.
Thanks
Google Apps Script is perfect to achieve this. You need to use GmailApp, Script Triggers etc from Google Script to automate it.
Best Regards
Apps Script Tutorials