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Pick the subject line.

+34% open rates over six months.

Pulse scores eight subject lines against 50 representative readers and tells you which one will get opened, which one feels pushy, and which one will get flagged as spam.

6 min read
·
Intermediate
·
4 moves
·
Updated weekly
01The situation

Why this exists.

Pulse scores eight subject lines against 50 representative readers and tells you which one will get opened, which one feels pushy, and which one will get flagged as spam.

Today

A patchwork that breaks.

  • A shared spreadsheet nobody opens on time
  • Prompts copy-pasted into a chat window
  • A contractor who disappears for two weeks
  • Output that lands in a different shape every run
With Pulse

A workflow that ships.

  • One brief, one cadence, one place to read it
  • Every claim cited, every step reviewable
  • A finished artifact in your team’s format
  • Email opens go up month by month instead of slowly decaying.
02The playbook

Four moves.

Pulse runs each move with a preview attached — so you know what lands before you ever hit send. Skip freely once you know which parts carry the weight.

  1. 01Kickoff

    Draft five to eight subject lines.

    Pulse starts with the brief and asks only for what's missing. No boilerplate intake form, no setup meeting.

    Chat · mariete
    Y
    Draft five to eight subject lines.
    P
    Pulse is working
  2. 02Gather

    Pulse scores them against your reader panel.

    Sources are pulled, cleaned, and cross-checked against prior runs — every claim carries a citation you can trace.

    checklist · step-02
    Source connected · pulse scores them
    Context loaded
    First pass complete
    Source connected
  3. 03Reason

    Send the best one.

    The agent thinks out loud where it matters — trade-offs named, assumptions surfaced, judgments explained.

    ranked results
    01Pick · email subject0.94
    02The · email subject0.82
    03Line · email subject0.67
  4. 04Draft

    Do it every send. Results compound over months.

    A first draft lands in the format your team already uses. You edit the last 10%, not the first 90%.

    delivery · inbox
    P
    Pulse → your team
    just now · scheduled weekly
    new
    Pick the subject line
    Email opens go up month by month instead of slowly decaying.
    Open briefing
03The setup

Configure Pulse.

Pulse runs on structured setup, not freeform prompts. Fill the fields once and the run is reproducible every time — same agents, same sources, same output shape.

pulse · run setup
ready
Variants
3 creatives uploaded
Audience
120 AI personas (matched to ICP)
Rounds
3 — initial · discussion · final
Metrics
Sentiment · engagement · purchase intent
Output
Winner + segment breakdown + transcript
Any field you skip, Pulse asks for once on first run.
Run Pulse
04What you need

Inputs in, outputs out.

Pulse runs on the inputs on the left and hands back the artifacts on the right. Skip any input — the agent will ask for it the first time it needs it.

What it takes in
  • One source of truth (CSV, CRM, or warehouse)
  • A one-paragraph brief on the goal
  • The KPI you want to move
What it hands back
  • A scored, cited brief you can forward
  • A structured file for downstream automation
  • An alert when anything material changes
05What lands on your team

A finished artifact, not a todo list.

Every run ends the same way — a packaged brief in the channel your team already reads. Here's a preview of what shows up.

playbooks·Mariete Bot·Mon 7:03 AM
delivered
P
Pulsebot · weekly
Pick the subject line — ready for review

Here's the brief for this week. I ran the playbook end-to-end, flagged anything that shifted against last run, and packaged the output for Slack and the shared drive.

  • Draft five to eight subject lines.
  • Pulse scores them against your reader panel.
  • Send the best one.
  • Do it every send. Results compound over months.
Open briefingbriefing.pdf · sheet.csv · slides.key
What moved
+34% opens
Email opens go up month by month instead of slowly decaying.
06Common pitfalls

Where teams stall.

Three ways we see this go sideways — and how to avoid each one.

Pitfall 01

Pointing the agent at stale or half-connected data. Clean the source once, compound every run after.

Pitfall 02

Running it once and forgetting. Put it on a weekly cadence so the numbers actually move.

Pitfall 03

Skipping the first review. Check the first run by hand — trust compounds from there.

07Questions

Before you start.

Usually one source is enough to see value. Pulse can run on a CSV paste for the first pass; connect the CRM, the data warehouse, or the tool of record once you want it to run on its own.

Most teams put this on a weekly cadence. That's the sweet spot between "too noisy to read" and "too stale to act on". Adjust once you see how the numbers behave.

Whoever owns the downstream action. Pulse hands back a finished result — the value is in somebody actually reading it and shipping the decision the same day.

It usually isn't. The first pass is calibration — tell Pulse what was off, rerun, and the second is close. By the fourth it reads like a teammate.

Your move

Run it today.

Forty minutes to set up. +34% opens on the other side. Pulse does the work.