Platform embed · Private brief

Pre-send A/B for outbound.Before a single email hits the list.

Lewsearch runs directional synthetic panel A/B on two email variants. Embed it in your product, your customers pick the winner before they burn the list.

Book 15 minutes →See Flash A/B Watch 2-min Loom →

First embed partner gets 60-day category exclusivity.

2-minute demo

Flash A/B on two partner outreach emails

Paste Variant A / B → synthetic panel → directional winner. Winner, sentiment split, verbatim quotes, embed via REST, webhook, or iframe.

Open in Loom ↗

The gap

Everyone personalizes who to email. Almost nobody tests which message wins first.

Your customers A/B test subject lines after they send, when opens and replies are sunk cost. Nobody in outbound credibly answers:

"Which of these two emails will land better with VP Marketing at mid-market agencies?"

Lewsearch does, with a directional synthetic panel read.

Accuracy & appropriate use

Directional message screening, not audited polling

What Flash A/B is for

✓Pick which variant feels clearer, more credible, less objectionable
✓Pre-send concept screening before live A/B on real lists
✓Fast iteration on subject lines, hooks, CTAs, and body copy

What it is not

· Not a reply-rate or open-rate predictor
· Not probabilistic sampling or audited poll toplines
· Not a substitute for live send A/B on real inboxes

Lewsearch synthetic panels are calibrated against published survey benchmarks (Pew, Gallup, PPIC, UT/TPP). Pooled accuracy: 7.47% average error on the 404 ex-electoral questions of the 460-question benchmark. Flash A/B uses the same Lewis inference stack for open-ended message evaluation, appropriate for directional creative and copy decisions, not legal, clinical, or electoral claims.

Full methodology & benchmarks →

Product

What you'd embed

Flash A/B · embed tier

Directional · n=50

✓50 respondents, each sees both variants (paired)
✓Winner, sentiment split, verbatim quotes
✓Built for in-app pre-send UX

Quick A/B · upsell tier

~5 min · 500 paired respondents

✓Client-ready PDF
✓Segment sentiment breakdowns
✓White-label available

Directional synthetic read, not audited polling. Built for concept screening and message iteration before live spend.

Partner value

What you get · what your customers get

You (platform)Your customers

A feature Apollo and HubSpot don't shipPick the winning email before the campaign goes live

Differentiation in a crowded AI-SDR categoryFewer embarrassing batches, higher reply rates

Demo moment in every sales callPaste Variant A / B → directional winner

Co-marketing + first-in-category storyBranded results inside your UI

Exclusivity

60 days. One category. First to sign wins.

What's exclusive

No other platform in your category (email sequences · AI SDR · LinkedIn outbound) gets a Lewsearch embed for 60 days from your launch date.

What's not

Direct Lewsearch sales, other categories, and white-label agency deals stay open. This is embed-partner exclusivity, not a blanket GTM lock.

After 60 days

Founding partner keeps preferential pricing. Category reopens for partner #2 at standard rates.

First partner terms

Launch offer

Free integration build

We build the REST and embed integration for you. MCP is roadmap.

30 days free

Flash A/B tier for your customers during pilot.

60-day exclusivity

Sole Lewsearch embed partner in your category (email sequences, AI SDR, or LinkedIn outbound). No competing integration signed during the window.

Margin-friendly

Rev-share or platform fee after pilot, you keep margin.

Integration v1

Weeks, not quarters

What runs today is the research endpoint on /api-docs. The A/B route below, the webhook, the embedded results panel, and the partner-branded PDF are the v1 we build with the first partner, on a date we set on the call. Founding partner: we build it with you free. Post-pilot: rev-share or a platform fee, scoped on the call.

// Proposed shape. This endpoint is not live. This is what we would build with you.
POST /v1/flash-ab
{
  "variant_a": { "subject": "...", "body": "..." },
  "variant_b": { "subject": "...", "body": "..." },
  "icp_hint": "VP Marketing, mid-market agency",
  "market": "national"
}

→ 200 OK (directional read)
{
  "winner": "B",
  "margin": "moderate",
  "sentiment_a": { "positive": 42, "neutral": 38, "negative": 20 },
  "sentiment_b": { "positive": 58, "neutral": 28, "negative": 14 },
  "top_themes": [...],
  "verbatim_quotes": [...]
}

Proof

Flash

Directional A/B, n=50

n=50

Respondents per run (25/arm)

Free

Flash runs · daily allowance by plan

$4K–$12K

Live focus group cost

First platform to ship this owns the narrative.

15-minute call. We will run Flash A/B on two of your outbound templates, scoped to your ICP.

calendly.com/lewsearch →

Lewsearch · hi@swarmgram.com