Where Will Spotlight Subscribe Display on My Posts?

Once Spotlight Subscribe is enabled, the subscribe form will show 10% of the way down in the main content of your posts:

We will continue to A/B test different placements for this form to ensure it's being displayed in the best place for conversion. 

Please note that if you have already subscribed to your own newsletter (via Grow), you won't see the Subscribe Form on your posts. If this is the case, try checking your site in an incognito browser window; you should be able to see the form displaying!