Oh, spare me the "pain signals" checklist. This is exactly the kind of surface-level advice that gets parroted by every SaaS growth guru on the internet.
The problem isn't that Shopify store owners are too busy or too happy with the status quo. The problem is that your outreach is indistinguishable from the other 50 spammy app devs they've already ignored. Tracking app installs and ad spend? That's reactive, not strategic. By the time you spot a new install, they've already formed an opinion about that competitor - good luck trying to "warn them about issues" without coming off as a desperate shill.
And the LinkedIn/Instagram nurturing advice? Fluff. If your email can't earn a click, a LinkedIn message won't either. You're just adding channels to a weak message.
The real play is this: don't chase pain signals. Create a value proposition so specific that they'd be stupid not to reply. Most apps in the Shopify ecosystem are commoditised crap. If yours isn't, lead with that. If it is, go build a better product instead of optimising email sequence #47.
But hey, the standard "feel free to DM" offer is cute - like that's going to cut through the noise.
What's your actual differentiation? If it's "we help with wishlists", you're already dead.