Your SMS list is the most expensive marketing channel to build and the most valuable once you have it. Postscript's list growth tools work, but only if you configure them with intent. This SOP gets the opt-in popup converting at 5+ percent of site visitors.
SMS opens at 95%+. Email opens at 25%. Multiply that by conversion lift and a 1000-subscriber SMS list is worth more than a 10,000-subscriber email list for transactional sends. The popup is the gateway.
Exit-intent catches abandoners. 50-percent scroll catches engaged readers. Both trigger the popup, dedupe per session.
Headline: 'Get 15% off your first order via text.' Don't bury the offer.
Email comes second, optional. Phone first because that's the channel you're building.
Required: 'By submitting, you agree to receive marketing texts. Reply STOP to unsubscribe.' Postscript handles wording; verify it shows clearly.
Show popup max once per 30 days per user. Cookies handle this. More aggressive frequency tanks brand perception.
10 vs 15 vs 20 percent. Find the conversion-to-revenue sweet spot for your AOV.
popup-exit-intent vs popup-scroll. Different intent, different downstream flow performance.
If popup-source subscribers opt out at >2x normal rate, the popup is over-promising. Tighten messaging.
Record your screen while performing the postscript sms list growth popup. ReccordSOP turns the recording into a SOP with timestamped screenshots. When your live setup changes, drift detection flags it.
Generate this SOP free3-5 percent of unique visitors signing up is solid. 6+ percent is excellent. Below 2 percent and the popup or offer needs work.
Make email optional. SMS is your primary capture. Email-and-phone-required popups convert half as well as phone-only.
10-20 percent. Below 10 and conversion drops. Above 20 and you train discount-shoppers who churn.
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