How many recovery emails should I send and when?

As a Shopify store owner in the beauty and fashion space, I've been wrestling with cart abandonment for months. Our traffic is solid—we're spending consistently on Meta ads—but our conversion rate feels like it's plateauing. I know we're leaving money on the table with every abandoned cart. I've heard different conflicting advice about recovery emails: some say send three, some say five, some say don't spam. But I need a strategic approach that feels respectful to potential customers while also recovering lost revenue. My current email strategy is basically non-existent, and I can feel that's hurting our bottom line. I want a systematic approach that doesn't feel desperate or pushy, but genuinely helps nudge interested customers towards completing their purchase. The challenge is finding that perfect balance between persistent and annoying—I don't want to tank our email deliverability or brand reputation by being too aggressive. What's the optimal number of recovery emails that actually converts without turning potential customers away?