Three a day, consistently, has been my baseline for about six months now. No tricks-just a scheduled batch on Tailwind with overlapping Pin types: one static graphic, one video, and one idea Pin. The thinking behind three is that it keeps the algorithm fed without overwhelming the audience. Pinterest seems to prioritise fresh content in the first 72 hours, so spacing them out by at least six hours each gives each Pin its own window to be tested. If you're running a local SEO play, like I am, that cadence also lines up nicely with rotating seasonal boards-one Pin feeds the evergreen board, one hits a trending topic, the third goes straight to a geo-targeted board for the city I'm optimising. No magic number, but three has held steady for me-more than five and I've seen saturation drops.