Cold email that sounds like us.
Voice prompts, real send numbers, the line in the sand on personalization.
This is the cold-email rig for sending 40 hand-touched emails a week and holding a ~40% reply rate. Five tools, a 5-line skeleton, one prompt per prospect, one sentence edited by hand on every send.
What you'll have when you finish: a warmed Smartlead sending account, a Claude project loaded with a cold-specific voice file plus the 5-line draft prompt, a Clay table set to fire on real triggers (job change, funding, product launch), and a weekly cadence of 40 sends in the recipient's midweek morning.
Accounts you'll need: smartlead.ai · clay.com · claude.ai · mailtester.ninja for deliverability checks. Budget: $140–200/mo total at this volume.
The stack.
- 01Smartlead — sending + warmupdaily
- 02Claude — draft per-prospectdaily
- 03Clay — enrichment + triggersweekly
- 04Notion — voice file + target listweekly
- 05Mailtester — deliverability checksmonthly
How to apply it.
- 01prospects · 60 min
Pick 40 prospects with a real reason.
By hand. Not from a list-buy. Read their company page, their last blog post, their LinkedIn — find the one specific reason this person needs to hear from you this week. Not "you're a growing startup" — something a stranger couldn't write.
If you can't find a reason in 90 seconds, skip them. The hit rate on weak reasons is below 5%.
- 02sample · 20 min
Write one email by hand.
Pick the easiest of the 40. Write the whole email yourself — opener, hook, ask, sign-off. Five lines maximum. This is the campaign's voice file.
- 03draft · 90 min
Claude drafts the other 39.
Voice file (your hand-written email) in project context. Drop in each prospect's enrichment data and the one-line reason. Output: 39 emails in your voice.
Each takes Claude ~10 seconds to draft. Don't read them yet.
- 04edit · 90 min
Edit by hand — at least one sentence per email.
This is the rule. Every email gets a hand-edit. Often it's the opener; sometimes the ask. Without this, the campaign reads like a campaign.
If you can't think of an edit, the prospect was wrong. Drop them from the list.
- 05send · midweek
Send midweek mornings, 9–11am their time.
Smartlead schedules around the recipient's time zone. Start of the week gets buried. End of the week disappears. Midweek in the recipient's morning is the window.
Cap at 15 sends per day per domain. Pace beats volume on deliverability.
What we stopped doing.
- ×Subject-line A/B at small volume. Below 500 sends, the data is noise.
- ×Merge fields longer than {{first_name}}. {{company}} fails when their name has an LLC suffix.
- ×"Hope this finds you well." Every recipient knows.
- ×Re-using last quarter's hook. Hooks expire. Refresh quarterly.
- ×Sending start or end of the week. Buried both ends.
- ×"Did this make sense?" follow-ups. If they didn't reply, they didn't owe you an answer.
- ×List buys. Whoever sold you the list also sold it to everyone else.
The take.
Cold email is a hand-craft problem disguised as a software problem. 40 a week, one real reason each, send midweek morning. The rest is tooling around the discipline.
Steal one thing: the 90-second reason rule. If you can't find one, the prospect isn't ready.
After three months at ~40% reply rate, these compound.
Voice clone from your past replies.
Export 30 of your sent emails — not cold, real ones. Feed them to Claude as the voice file. The drafts get sharper than the hand-written sample alone can produce, because the model sees how you actually write across contexts.
Trigger-based prospecting.
Clay watches for: job change, funding event, new product launch, leadership hire. The "reason" comes free with the trigger. Reply rate on trigger-based outbound runs ~10 points higher than cold.
Two-touch automated, third by hand only.
Smartlead handles the first two touches with template + variable. The third touch — if it happens — gets your full attention. The third touch is where ~30% of replies actually come in.
Track replies and sentiment.
Every reply gets classified: positive, neutral, hostile. Hostile replies on a hook mean the hook is wrong — kill it. Two hostile replies in 40 sends is a flashing signal.
Five symptoms with the fix.
№ 01Reply rate dropped.+
№ 02Bounce rate spiked.+
№ 03Going to spam.+
№ 04Replies all "no thanks."+
№ 05No replies at all.+
Three drop-ins. The 5-line email skeleton, the voice file for cold, the draft prompt.
The 5-line cold email skeleton.
Five lines. Every email. Nothing under, nothing over.
5-LINE COLD EMAIL — fixed shape LINE 1 — REASON One sentence. Something specific about THIS person that a stranger couldn't have written. No "I noticed your company is growing." LINE 2 — HOOK What you do, in one sentence, framed against their reason. Verb-first. Concrete number if you have one. LINE 3 — PROOF One name or one number. Not both. Skip if neither is honest. LINE 4 — ASK Specific. Time-bound. Low-friction. "15 min later next week?" not "let's chat." LINE 5 — CLOSE Two words. "Either way," then your sign-off block. NO P.S. NO "HOPE THIS FINDS YOU WELL." NO EMOJIS.
The voice file for cold.
Different from the newsletter voice file. Cold needs more directness, less rhythm.
COLD-EMAIL VOICE FILE — last updated [MONTH 'YR]
Rules for this voice
────────────────────
- Verb-first sentences.
- Periods, not commas. Stop the sentence.
- One italic phrase per email, maximum. Often zero.
- No semicolons. No parenthetical asides.
- Numbers over adjectives ("3.4x" beats "huge").
Phrases I never use in cold
───────────────────────────
- hope this finds you
- quick question
- just wanted to
- reaching out because
- circle back
- touch base
Reference — three emails that landed (paste in full)
────────────────────────────────────────────────────
[Email 1 in full — opener + body + ask]
why it landed: [one line]
[Email 2]
why it landed:
[Email 3]
why it landed:The draft prompt for Claude.
One prompt per prospect. Voice file in project context.
Draft a cold email in my voice using the 5-line skeleton.
Voice file is in project context.
RULES
- 5 lines exactly. Skeleton in project context.
- Lead with the reason. Specific. From the data below.
- Do not write "I noticed" or "I came across."
- No emojis. No P.S. No "hope this finds you well."
PROSPECT
Name: {{first_name}} {{last_name}}
Role: {{title}}
Company: {{company}}
Industry: {{industry}}
THE REAL REASON (the one I found by hand)
{{one_sentence_reason}}
MY HOOK (what I want to offer)
{{one_sentence_hook}}
MY ASK
{{specific_ask_with_time_window}}
Output ONLY the email body. No subject line.
The first line MUST be the reason. Verbatim from above
or in my voice — your call.Need this done for you? The author works on this exact thing with audit clients at austinaiguy.com.