SMS abandoned checkout converts 2-3x higher than email abandoned cart, but it's also the easiest channel to abuse. One wrong-timed send or aggressive offer and subscribers opt out. This SOP gets the message timing and content right.
SMS cart recovery is the most aggressive channel you have. Done well, it adds 5-8 percent to revenue. Done poorly, it drives opt-outs that you can't recover. Tight execution matters more here than anywhere else in your stack.
Faster than email (which goes at 1 hour). SMS owns the immediate followup window.
One nudge. A second send drives opt-outs hard.
MMS converts 25 percent better than SMS for cart recovery. Cost is higher but ROI is positive.
Required for every send. Postscript handles this if configured correctly, verify monthly.
Race condition: customer completed checkout but trigger fires before sync. Filter explicitly.
Don't stack flows on a fresh subscriber.
Postscript preview hides the unsubscribe footer length. Test the actual experience.
Some cart recovery happens within hours, some within days. Don't undercount.
Record your screen while performing the postscript abandoned checkout text. ReccordSOP turns the recording into a SOP with timestamped screenshots. When your live setup changes, drift detection flags it.
Generate this SOP free45 to 60 minutes. Sooner feels intrusive, later loses momentum.
Test both. Brands with high AOV often don't need to discount. Lower AOV usually benefits from a code.
Postscript SMS catches the customer faster and converts higher per message. Klaviyo email gives more space to make the case. Use both, with SMS first.
I built ReccordSOP after watching too many DTC ops teams lose months to undocumented workflows. These SOPs are battle-tested with Shopify operators running $1M to $50M brands.
Last reviewed June 1, 2026