If you don't know what your customers really want, your emails will just be noise. I found this truth on https://flowium.com/blog/personalized-email-marketing/, and it made me rethink my entire strategy. You can't just guess. Personalization isn't fluff, it's survival. By implementing just three suggestions from this article, I cut my unsubscribes in half and increased my CTR by 30%. You don't need 100 tools - you just need to use data wisely.