Engine 03 · Email & sequences

Know who opens, clicks, or deletes. Before you send.

One email, three roles, three readers. Email Campaign Simulation runs every variant through the full inbox-to-page chain, so you know who opens, clicks, replies, or deletes, before you send.

Sourced to real buyer reviews · set up in minutes, not weeks
EMAIL · /inboxLive
Email Campaign Simulation interface
Runs against
Subject + body variants
Models
Inbox to page
You get
A per-role winner
The process

How it works.

A three-stage chain, run across every variant and every role.

01

The inbox

Subject and preheader only. Open or ignore.

02

The body

Read against the promise. Click, reply, or abandon.

03

The destination

The page lands the promise. Convert or bounce.

04

Rank the matrix

Every variant, every role, scored. Winners surface.

Why it breaks

Three ways it fails. Three fixes.

Each one is invisible until after launch. WhyUser catches all three before the spend.

Failure 01

The inbox attention tax

120+ emails a day. The subject gets two seconds. Automated? Relevant? Gone.

Every subject scored, per role, before you send.
Failure 02

The subject-body break

The subject earns the open. The body opens with “Hope you’re well!” Promise shattered.

The body is judged against the promise, with each role’s reason.
Failure 03

Optimized for none

One email to the VP, the architect, and the engineer wins for none of them.

Per-role winners show who you win and who you lose.
What you get

The Per-Persona Winner, and everything around it.

Weeks of A/B cycles and subject-line guessing. Gone.

variant synthesis
Variant matrix · per role
EngCFOSec
A · “Cut rollback 60%”winmissweak
B · “Reduce TCO”weakwinweak
C · “Quick question”missmissmiss
Winner: A for Eng, B for CFO. Split the send, drop C.

Per-Persona Winner

The subject, body, and CTA that win per role.

Variant matrix

Ranked performance across every combination.

Link heatmap

Which CTA each role clicked.

Objection replies

The likely pushback, so SDRs can prep.

Drafted subjects

Replacements when a variant is below baseline.

Who it is for

Built for the people who own the number.

Email Campaign Simulation

Demand gen

Know which subject earns opens before the full send.

Email managers

Pick the winning body without a live A/B test.

SDR leaders

Make the first cold email land. Prep the objections.

Product marketing

Validate a launch email for practitioner and buyer.

Works with

One engine, then the next.

Start with Committee Simulation, then add the engine for the next channel you ship. All four run on the same Ground Reality foundation.

Get started

What would it be worth to know the winner before your first send?

Apply for the design partner program. Run it on a campaign you already know. Grade us yourself.

Apply for Design Partner Why not build it