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A/B Test Ideas: Pulled from 1,600+ Tests Across 500+ Brands
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Start with open rates. Then click rates. Then placed order rates. Fix the top of the funnel before optimising the bottom. Green rows are tests we’ve already run on live client accounts. Full results, both variants and screenshots are in the ✅ section at the bottom.
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→ Pick a test → Log it in the Flows or Campaigns tab → Track hypothesis vs result → Run one test every 2 weeks
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#Test HypothesisChannelWhere to TestMetric to MoveLikely WinnerInsight from Testing
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🎯 OPEN RATE TESTS — Fix these first. There's no point optimising content nobody opens.
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1Afternoon send time (5–7PM) vs morning (9–10AM)EmailFlows + CampaignsOpen RateAfternoonAfternoon consistently outperforms in Chronos tests across 1,600+ sends. Hypothesis: working adults check email end-of-day. Use Klaviyo Smart Send Time to validate per account.
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2Real customer review quote as subject line vs brand-written headlineEmailFlows + CampaignsOpen RateReview quoteFrom 1,600+ tests: '"This stuff works unlike anything I've EVER used!" ⭐' beat 'How awesome do you want to look?' Verbatim social proof cuts through in the inbox.
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3Curiosity-inducing subject line vs straightforward product benefitEmailFlows + CampaignsOpen RateCuriosity'The Perfect VR Gaming Accessories! You Won't Believe Your Eyes!' beat 'Enhance Your Gaming with Our Latest VR Accessories.' Pattern holds across tech, beauty, pet categories.
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4Benefit-led subject line vs feature-led subject lineEmailFlows + CampaignsOpen RateBenefit'Healthy teeth = a happy dog!' beat '100% Natural Dental Chews.' Lead with what the customer gets, not what the product does.
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5Statement subject line vs question subject lineEmailFlows + CampaignsOpen RateStatement (usually)Tested 3 rounds on TexTale — statement SL won or tied every time. Note: results not always statistically significant. Questions can feel like effort. Statements deliver.
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6Specific discount amount in subject line vs urgency-onlyEmailSale CampaignsOpen RateSpecific amountTexTale: 'Last chance for up to 60% OFF + FREE gifts' beat 'Valentine's Day Sale ends today.' Specificity signals value before the open.
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7Percentage discount framing vs outcome/value framing in subject lineEmailPop-ups + CampaignsOpen Rate + Submit RatePROVEN: percentage framingRun on Qure: submit 10.78% vs 7.00%, +162% revenue, called in 18 hours. → Full results and both variants in the ✅ section below.
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8With emoji vs without emoji in subject lineEmailFlows + CampaignsOpen RateTest per accountTexTale: emoji had negligible open rate impact (47.26% vs 47.22%) across 3 tests. Revenue difference was more significant. Don't assume emoji = engagement.
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9Real first name in subject line vs no personalisationEmailPost-Purchase FlowsOpen RateFirst nameStrongest in post-purchase flows where the relationship is established. Less impact in cold acquisition sends where the brand relationship hasn't been built yet.
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🖱️ CLICK RATE TESTS — Once they're opening, make them act.
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10Customer review block mid-body vs no reviewsEmailFlows + CampaignsClick RateWith reviews33.1% average click rate increase across 3 Chronos tests (90%, 60.2%, 82.4% statistical significance). Place reviews mid-email — not just footer. Real quotes outperform star ratings alone.
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11Product blocks (dynamic) vs no product blocksEmailFlows + CampaignsClick RateWith product blocks2.1x click rate lift in best Chronos test. Critical: hero image and product block images must differ — same image repeated looks spammy and tanks performance (Chronos failed test: 1.86% vs 2.31% without).
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12Product blocks without price vs with price shownEmailFlows + CampaignsClick RateWithout price (usually)TexTale 3 tests: hiding price won 2 of 3 times — reduces price objection before the click. Exception: Test 3 showed with-price winning at higher placed order rate. Test per price point.
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13Body copy added vs image-only emailEmailFlows + CampaignsClick RateWith body copyTexTale: adding body copy lifted click rate 1.07% → 1.46% and revenue +22%. Second test: 0.39% → 0.54% click rate. Gives context, builds purchase intent before the CTA.
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14Text-based or text-heavy HTML vs rich image-heavy HTMLEmailSale CampaignsClick RateText-based for salesChronos: text-based won 3.5x for sale/announcement emails. Image-heavy won 6.13x for social content emails. Match the format to the intent of the send — not a one-size rule.
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15GIF hero image vs static hero imageEmailCampaigns + FlowsClick RateTest per accountTexTale W02: GIF vs static tested. Results mixed — GIFs can increase attention but raise file size and load time. Some accounts respond better to clean static. Always test per audience.
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16Social content email vs sale-only email in same campaignEmailCampaignsClick Rate + Placed Order RateTest per accountTexTale 2 tests: mixed results. Test 1. Social content slightly lifted revenue (+7%) despite lower click rate. Test 2. No social content won (+115%). Audience-dependent.
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17Bold/explicit offer headline vs passive/understated offer mentionEmail + SMSPop-ups + CampaignsSubmit Rate + RevenuePROVEN: explicit offerRun on Ruff Rover: submit +25.53% desktop / +34.16% mobile, revenue +21.43% / +10.20%. → Full results and both variants in the ✅ section below.
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18CTA above the fold vs CTA below the foldEmailFlows + CampaignsClick RateAbove the foldThe first CTA a subscriber sees is the most likely to get clicked. Test placement before testing colour or copy — position has more leverage than most teams realise.
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19Gamified quiz pop-up (multi-step) vs standard email capture formEmail + SMSPop-upSubmit Rate + RevenuePROVEN: full-page quizRun on Kiyoko: submit +66.7% US / +105.3% CA, 2.17x pop-up revenue. → The full winning sequence in the ✅ section below.
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💰 PLACED ORDER RATE TESTS — Revenue per send is the final objective.
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20$ amount off vs % off vs outcome-led offer framingEmail + SMSFlows + CampaignsPlaced Order RateTest per accountNo universal winner. % off wins in deal-mode contexts (Qure). $ off wins at high price points. Outcome framing wins when product understanding is high (ChargeAsap: 83% of backers, zero discount).
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21Urgency escalation across flow emails (10% → 15% → final chance) vs flat discountEmailAbandoned Cart FlowPlaced Order RateEscalating urgencyGarvee: discount logic capped at 12% with expiry urgency built in across cart sequences. Urgency ladder consistently outperforms a single static offer. Protects margin while maintaining conversion.
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22Social proof as primary CTA driver vs discount as primary driverEmailCampaigns + NCA FlowPlaced Order RateTest per accountChargeAsap: email drove 83% of Indiegogo backers with zero discount — pure media validation and deadline urgency. Social proof replaces discount when trust is the actual purchase blocker.
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23First-time buyer vs repeat buyer — different discount logicEmailAbandoned Cart FlowPlaced Order RateSegmentedSuppress discounts for repeat buyers who've already converted at full price. Reserve incentives for new customer conversion. Protects margin without hurting overall recovery rate.
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24Outcome-focused CTA copy vs action-focused CTA copyEmailFlows + CampaignsPlaced Order RateTest per account'Start my routine' vs 'Shop now.' 'Use my welcome discount' vs 'Claim offer.' Outcome CTAs align with the customer's motivation, not just the mechanical next step.
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25Replenishment email at predicted reorder date vs fixed 60/90-day windowEmail + SMSReplenishment FlowPlaced Order RatePredicted dateNuvé: Klaviyo predictive analytics showed 30-day average gap vs 75-day fixed timing. Earlier trigger aligned with actual repurchase intent. Use average time-between-orders as your trigger, not a fixed rule.
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26Post-purchase education email vs review request emailEmailPost-Purchase FlowRepeat Purchase RateEducation emailQure: post-purchase education flow held 66–72% open rates through email 4. Education builds product confidence that drives second purchase. Review request emails ask for a favour before the relationship is earned.
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📱 SMS + PUSH TESTS — A parallel channel. Not an email echo.
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27Problem/solution angle SMS vs offer-led SMSSMSNCA FlowClick Rate + RevenueProblem/solutionQure NCA SMS: problem-led variant beat offer-led in direct A/B test. Leads with a pain point the subscriber recognises ('Struggling with fine lines?') before presenting the solution and discount.
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28Segmented SMS by behaviour (customers vs leads vs unengaged) vs single blastSMSBFCM CampaignsRevenue + Unsub RateSegmentedTruly Beauty BFCM: 3 message versions across 3 SMS segments. Same promotion, different psychology per group. SMS contributed 3.5% of total store revenue on top of email's 16% in 8 days.
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29SMS with MMS (before/after image) vs text-only SMSSMSNCA Flow + CampaignsClick RateMMS with social proofQure SMS welcome: before/after MMS reduces the main objection ('does it work?') before the click. MMS adds cost — confirm revenue uplift justifies it per account before rolling out broadly.
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30SMS triggered 2 hours after email vs SMS sent simultaneously with emailSMSAbandoned Cart + NCA FlowsClick Rate2-hour delaySMS as follow-up gives email a chance to convert first. SMS then catches non-converters while intent is still warm. Simultaneous sends dilute both channels and increase unsub risk.
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31Push in the abandoned cart flow for push subscribers vs email and SMS onlyPushAbandoned Cart FlowPlaced Order RateTest per accountA fashion brand we work with sees push click-through rates of 15–22%. Fenix runs web push in its cart abandonment flow as well as its campaigns, and push drove 11% of total store revenue. Split the flow on push subscribers so you can see what push adds on top of the email and SMS steps.
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32Product image in the push vs text-only pushPushCampaigns + Back-in-Stock FlowClick RateTest per accountPushwoosh puts the click lift from rich media at around 2–3x plain text. Track placed orders alongside clicks, since a bigger image can pull curiosity clicks that don't buy.
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33Push sent 1–2 hours after the campaign email vs at the same time as the emailPushCampaignsClick Rate + RevenueTest per accountSame logic as test 30. The delay gives the email a chance to convert first, and the push catches non-openers while the offer is still fresh. Sending both at once puts two alerts on the same phone within seconds.
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34Pop-up with SMS multi-step opt-in vs email-only captureEmail + SMSPop-upSMS List Growth + LTVPROVEN: multi-stepRun on Garvee: +101K email and +77K SMS subscribers in one Q4. → Details in the ✅ section below.
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35Mystery discount + quiz step will beat disclosed BOGO discount without quiz step in pop-up conversionEmail + SMSPop-upEmail + SMS Submit RatePROVEN: mystery + quizRun on Olivia Jewelry: email submit +30% (17.3% vs 13.3%), phone +24%, quiz step +1–4% on top. → All five winning steps in the ✅ section below.
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→ Statistical significance matters. Don't call a winner until sample size is sufficient. Use the "Statistically Significant?" column honestly. Inconclusive results are still useful data.
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✅ TESTS WE’VE ACTUALLY RUN — pop-ups and offers: the variants, the winners, and why
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QURE SKINCARE · Pop-up offer framing — winner: the simpler promise · Format: centered modal with countdown timer
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Winner: A, decisively. Submit rate 10.78% vs 7.00%, 79 orders vs 28, +162% revenue, 100% win probability, called inside 18 hours. Why it won: A gave the eye one number to process. B asked the reader to do the math (five months, $199, was $595, work out the saving) before deciding anything. Same offer underneath.
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RUFF ROVER · Say the offer or hint at it — winner: say it · Format: centered modal
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Winner: A. Submit rate +25.53% on desktop and +34.16% on mobile; revenue +21.43% and +10.20%. Why it won: the control mentioned 5% off in passing, the winner put the full offer in the headline. People can’t want what they can’t see, and clarity beat subtlety on every metric.
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RUFF ROVER · Countdown timer vs no timer — winner: the timer, on both devices · Format: full-page scratch-to-win
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Winner: with timer, desktop and mobile. Desktop: submit rate 8.04% vs 7.82%, +18% revenue, +21% orders. Mobile: submit 6.01% vs 5.58%, +7.69% revenue, +5.13% orders. AOV dipped slightly both times (2 to 4%). The honest caveat: neither device reached statistical significance, so treat this as a lean, not a law. Urgency pulled more people through the same offer.
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KIYOKO BEAUTY · Full-page quiz vs half-screen form — winner: the question · Format: A full-page takeover, B half-screen modal
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Winner: A. Submit rate +66.7% (US) and +105.3% (CA), pop-up revenue 2.17x (US), step-one engagement more than tripled in both markets. Why it won: the control asked for an email on screen one. The winner opened with a playful question, then spread the decisions across four light steps: tap, email, phone, quiz. Each yes built on the last. The follow-up: a second full-page rollout in November roughly doubled submit rates again, the same month the account hit its highest attributed-revenue share in its history.
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OLIVIA JEWELRY · Tiered offer vs flat discount — winner: the tiers · Format: campaign offer, not a pop-up
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Winner: A, +12% revenue per recipient. Why it won: "buy more, save more" pulled average order value up, the bigger ceiling gave people a reason to add another item, and a structure they hadn’t seen before felt fresh next to the usual flat percentage. Same BOGO base under both.
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OLIVIA JEWELRY · Four-way scratch-to-win — winner: mystery discount + quiz step · Format: full-page takeover
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Winner: mystery discount + quiz, beating all three other variants. Email submit +30% (17.3% vs 13.3%) and phone +24% (6.77% vs 5.47%) for "Mystery Discount" over the disclosed "Buy One Get One 50% Off", and adding a quiz step between the scratch and the email ask added another +1–4% on top. The twist that makes it clean: the mystery card resolved into the same BOGO 50% everyone else saw upfront. Same prize, withheld vs disclosed, and withholding won. All five steps of the winning sequence:
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GARVEE · Multi-step SMS opt-in vs email-only capture — winner: the multi-step
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Winner: the multi-step rebuild. +101K new email subscribers and +77K net new SMS subscribers in a single Q4. Why it won: email and SMS each got their own yes instead of one crowded form, and exit-intent triggers caught leavers the old pop-up never saw. The setup: the pop-up rebuilt as a sequence, email first, then SMS as its own step, with an exit-intent version for anyone leaving without subscribing.
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