How do I track the performance of different email recovery strategies?

As an e-commerce store owner, I've been struggling to understand why customers abandon their carts and how to effectively bring them back. My current email recovery process feels like shooting in the dark. I'm running multiple campaigns—welcome emails, cart abandonment sequences, post-purchase follow-ups—but I have no clear way to track which strategies are actually moving the needle. Some days, I see a few recoveries, but I can't pinpoint what worked. Are my discount codes too generic? Are the timing and personalization off? I'm burning through email credits and time, and I need a systematic approach to measure and optimize my recovery efforts. I want to know not just how many emails are sent, but their true impact on revenue, conversion rates, and customer re-engagement. My gut tells me there's untapped potential in my email recovery strategy, but without solid data, I'm just guessing.