Most IFTTT integrations are fairly limited, but some people have come up with creative ways of using IFTTT to link services together.
Here’s the list of IFTTT triggers for Todoist. As you can see, it’s great for triggering things when tasks are created or marked as completed, but doesn’t have any timer/scheduled based functions.
That being said, we’re always interested to hear which platforms people are interested in integrating with and what they’d like to see out of those integrations. I have Todoist on the list, but only one other person has requested it so far, so other more highly requested items have been prioritized first. 