i love that as a north star metric when it comes to audience growth. We have an automation where we clean up the list of new subscribers who never open e mills. The more you clean up your list, the higher lets your engagement percentage. So i especially for g male, if you have most of your list opening and engaging with your news letter, you're more likely to go into primary tab or up date tab. Then if your deliverability decreases, you might get into promotion stab. It's just unavoidable. But then we've seen when doing cross promotion, so swaps other news letters that we can still send, like we ever, an engaged audience.