Much of the info in this post is from an article on engadget. I became aware of the situation as I was working to build an IFTTT applet that would change my office lights to red if a website went down and I got an email about it from Uptime Robot. That applet can probably still be made but just not using Gmail anymore as a trigger.
Google’s push to tighten third-party API access is already going to cost the world Google+, but a change that more of you might notice is coming to IFTTT. The service sent out emails alerting users that their “recipe” scripts involving Gmail triggers and an action that could create a draft will go away as of March 31st. According to Google, the shift is a result of the Project Strobe sweep it announced last October.
IFTTT said it worked with Google to keep the integration that will support triggers to Send an email, or to Send Yourself an email, but the API lockdown that’s coming would’ve required too much work to change its services. Otherwise, integrations with Google will still be the same, but anyone relying heavily on the automated scripts may want to double check things before they get a surprise in a few days.