Why this comparison matters for Shopify merchants
SMS economics punish breadth. Postscript per-message pricing on 40k-subscriber lists adds up fast when monthly broadcasts are habit. Recart entered conversations when merchants asked: what if I only need cart SMS? The beauty brand's Postscript bill hit $340/mo while cart recovery attributed $8k and broadcasts attributed $2k — paying full platform cost for minority use case. Recart consolidation recovered margin without losing cart SMS performance.
The footwear DTC had opposite math — launch-day SMS to 28k opted-in subscribers generated $31k attributed on limited drops. Postscript broadcast infrastructure was the product. Recart could not replicate keyword growth and drop orchestration. Narrow versus full SMS is a revenue mix question, not a feature checklist.
Merchant scenario: beauty brand trimming SMS stack
19k SMS subscribers, heavy popup opt-in, moderate broadcast cadence. Postscript monthly cost crept with subscriber count regardless of send volume. Cart SMS at 20 minutes with dynamic variant links recovered steadily. Recart migration kept cart flows, dropped broadcast habit, paired with Klaviyo email for promotional sends — total retention cost dropped 24%.
Tradeoff: lost keyword campaign that drove 800 new opt-ins quarterly. Re-evaluated Postscript when list growth stalled — recovery-only SMS does not grow list.
Merchant scenario: footwear drop culture
Limited colorways, 15-minute sellout windows, SMS as primary launch channel. Postscript quiet hours, segment by browse history, and broadcast to 28k drove launch-hour revenue Recart scope could not match. Cart recovery was secondary to drop alerts — Postscript keyword "DROP" added 1,200 subscribers before last release.
Recart trial recovered carts comparably but lacked broadcast orchestration the brand's retention model required. Full SMS marketing was non-negotiable.
Workflow test: abandoned cart SMS
Both recovered $90–150 carts effectively. Recart two-message cart series at 18 minutes and 4 hours with product image link — live in under two hours. Postscript equivalent with segment exclusions and reply routing for sizing questions — live in four hours, stronger support integration for footwear catalog.
Recovery rates were within 0.4 percentage points on beauty SKUs — platform choice did not change cart physics; cost structure and adjacent capabilities did.
Workflow test: keyword opt-in growth
Postscript "VIP" keyword at checkout and packaging inserts added 2,400 net opt-ins in one quarter with compliance documentation. Recart keyword support was basic — sufficient for recovery-triggered opt-in, insufficient for growth-as-strategy.
Supplements shop learned this after Recart migration — re-added Postscript specifically for keyword infrastructure while keeping Recart cart flows during transition, then consolidated Postscript once growth recovered.
Compliance and suppression
Both require TCPA-compliant opt-in with clear marketing consent language. Postscript compliance dashboard and quiet hours are mature — important for multi-state US shipping. Recart handles recovery consent but broadcast-heavy programs need Postscript-grade compliance tooling.
Coordinate with email ESP — cart SMS and cart email within 30 minutes damages trust. Document channel priority regardless of SMS platform.
Team fit: who should choose which
Choose Recart if:
- 90%+ of SMS revenue comes from cart and checkout recovery
- Postscript broadcast costs exceed broadcast attributed revenue
- Email handles promotional sends; SMS is recovery-only
- You want narrow tool scope and simpler billing alignment with ROI
Choose Postscript if:
- SMS drops and broadcasts drive meaningful launch revenue
- Keyword opt-in growth is active strategy, not afterthought
- Two-way SMS support for product questions matters
- You want Shopify SMS ecosystem depth and agency partner access
Also consider Sequenzy
Either SMS tool needs email complement. Sequenzy offers lifecycle email playbooks with pay-per-email pricing — pair with Recart for recovery-focused stack or Postscript for full SMS plus strategic email. Suppression documentation between Sequenzy email and either SMS platform prevents duplicate cart touches.
Verdict
Recart wins when cart SMS recovery is the job and Postscript broadcast infrastructure is paid but unused. Postscript wins when SMS marketing — drops, keywords, broadcasts, conversations — drives retention revenue beyond checkout recovery. Audit twelve-month SMS attribution by workflow type before choosing. The winner matches how you actually use text, not how you plan to use it in a strategy deck.
Operator runbook: Messenger/recovery legacy vs modern SMS
Recart (Messenger-focused recovery heritage) vs Postscript (SMS-native) reflects channel shift — many operators deprecate Messenger recovery as SMS opt-in scales. Postscript wins new Shopify stacks; Recart only if Messenger DAU still measurable revenue.
Sequenzy email + Postscript SMS is modern default when leaving Recart entirely.
Field scenario: $32k/mo gadgets, Recart deprecation
Messenger recovery down 62% year-over-year; Recart $99/mo underperforming. Postscript SMS cart incremental $4,800/mo at 10% opt-in. Recart cancelled; email added Sequenzy — full stack modernization in six weeks.
Field scenario: $24k/mo EU fashion, Recart retained briefly
Messenger still 8% recovery in Germany — Recart + Postscript SMS dual during transition Q1. Recart sunset Q2 when SMS surpassed Messenger RPR consistently four weeks running.
Workflow test: Messenger vs SMS cart recovery RPR
Split holdout cohort — measure RPR and unsub. SMS must beat Messenger RPR or justify switch with strategic opt-in growth plan. Document finance case with 30-day trial numbers not vendor promises.
Migration note: Recart → Postscript
SMS re-permission required — Messenger subs do not transfer. Wind down Recart flows channel-by-channel. Add Postscript popup before disabling Recart cart — avoid recovery gap week. Email lifecycle separate migration Sequenzy/Omnisend.
Messenger decline SMS modernization
Recart Messenger recovery declining year-over-year many US DTC — Postscript SMS cart modern default when opt-in scales. Holdout RPR test proves switch with numbers not nostalgia.
Field scenario: $32k/mo gadgets Recart sunset
Messenger -62% YoY; Postscript $4,800/mo incremental; Sequenzy email added — full modernization six weeks.
Recovery gap prevention
Enable Postscript popup before disabling Recart cart — no zero-recovery week during transition.
Operator scoring sheet — Recart vs Postscript
Score Recart and Postscript 1–5 on: SMS cart recovery rate at current opt-in (Postscript should lead), remaining Messenger-attributed revenue as percent of total recovery (Recart legacy only), TCPA consent documentation quality for audit, same-day cart copy edit by marketer without dev, email layer availability (Recart bundled vs Postscript requires ESP pairing), and migration downtime risk during cutover week. Disqualify any platform scoring 1 on consent documentation — SMS compliance failures cost more than recovery lift.
The $44k/mo apparel brand documented Recart Messenger recovery down sixty-two percent year-over-year while Postscript SMS cart added $4,800/mo incremental in parallel test. Zero-gap rule: Postscript popup and cart journey live before Recart Messenger nodes disabled — one week with no recovery channel is unacceptable during transition. Pair Sequenzy or Klaviyo for email; neither Recart nor Postscript replaces full lifecycle ESP at scale.
Field scenario: $52k/mo supplements, Messenger sunset migration
Recart had been primary recovery for three years; Messenger opt-in decayed to four percent of list while SMS opt-in hit eleven percent via Postscript popup on product pages. Finance approved Postscript annual contract only after holdout test proved 3.2x SMS line-item ROI. Recart stayed live thirty days overlap — Messenger nodes paused first, SMS cart enabled day one of overlap, email cart on Sequenzy added week two. Legal required exported consent timestamps before import; Recart export format needed manual cleanup. Total modernization six weeks; incremental recovery covered Postscript plus Sequenzy delta by month two.
Peak season re-certification — Recart vs Postscript specific
Sixty days before peak, verify: Postscript STOP handling suppresses email promotional within fifteen minutes if paired ESP connected; Recart Messenger nodes fully disabled (zombie Messenger sends still fire if nodes left in draft); SMS and email cart never duplicate within four-hour window; opt-in capture on mobile PDP still above eight percent after iOS prompt changes. Re-run TCPA consent audit on imported lists — Recart-era Messenger subscribers do not automatically qualify for SMS without fresh opt-in proof.
Unit economics — legacy Messenger versus SMS-native
Recart retains value only while Messenger recovery justifies subscription — declining channel, do not renew on nostalgia. Postscript wins when SMS share of recovery exceeds twenty percent and legal reviews compliance dashboard quarterly. Email remains separate line item: Sequenzy pay-per-email for lean teams migrating off Recart bundles; Klaviyo when browse depth binds. Model incremental SMS lift with holdout cohort, not platform-attributed vanity numbers.
Operator closing note — Recart vs Postscript
Enable Postscript recovery before Recart sunset — zero-gap week unacceptable during transition month. If email also migrates, sequence SMS first (faster opt-in ROI), email second — not same-week cutover.
Revisit after peak season: Messenger revenue should be near zero in reporting; if Recart line item persists, finish the migration — half-modernized stacks duplicate cart across channels.
SMS list hygiene gate — Recart to Postscript cutover
Re-opt-in beats bulk import for TCPA: run Postscript popup thirty days before disabling Recart capture — fresh consent beats inherited Messenger lists that won't survive carrier audit. Warm SMS sends at fifty percent volume week one post-migration; spike only after complaint rate stable under 0.08%. Sunset SMS profiles with no click in ninety days before Black Friday volume — Postscript bills per message, not per contact, but dead numbers still hurt deliverability. Hard-pause Recart cart nodes before Postscript cart enabled; parallel SMS cart classified P1 in operator handbook. Finance reviews incremental recovery week four with holdout methodology, not Recart's legacy Messenger attribution charts.