What works for deliverability
→ Wait 30+ days after buying domains before sending
→ Configure DNS properly
→ Warm up mailboxes gradually
→ Start at 10 emails/mailbox/day, scale slowly
→ Monitor sender score daily
The best email in the world doesn't work if it never lands
Posts by Xavier Coiffard
Don't send from your main business domain.
If acme .com gets flagged for spam, your entire business email goes down.
Invoices. Client communication. Partner emails. Everything.
Buy secondary domains: acmehq getacme, tryacme
Keep your main domain clean.
Hiring signals are the best targeting filter for cold email.
Company posting for an SDR = they believe in outbound and have budget allocated.
Company hiring Head of Marketing = they need marketing help right now.
Timing beats everything.
Cold email reply rates in 2026:
2-4% is genuinely good.
Not 10%. Not 8%. Not the cherry-picked screenshot some guru posted.
At real scale, with real campaigns, 2-4% is what works.
If you don't know your baseline, you have no idea if you're winning or losing.
Your first cold email should be 40 words max.
I know that feels impossible.
You want to explain your product. Share case studies. Drop social proof.
Save it.
First email has ONE job: get a reply.
Observation. Proof. Question. Done.
Most common cold email mistakes I see:
→ Sending from 3-day-old domains
→ Missing DNS records
→ No warmup period
→ Using primary business domain for cold sends
→ 1,000 emails day one from a fresh mailbox
Every single one = straight to spam.
Fix infrastructure first.
💥 ROI positive in 30 days
Most agency plays take months to convert
This one booked meetings immediately
The difference:
→ Tight ICP (agencies in luxury sector, 10-30 people)
→ Job posting signals
→ CTA: audit, not demo
Right timing + no-pressure offer = fast conversions.
Underrated play:
Target industries nobody's spamming
・Local services
・manufacturing
・construction
・engineering firms
Cleaner data. Less competition. Less list burnout.
Everyone's fighting over the same SaaS founders while entire industries sit untouched.
Cold email has been the play since 2018.
Still works in 2026.
Not because it's clever. Because everyone thinks it's too boring and keeps looking for something else.
While you're "finding your thing," someone's doing 600 sends/day and closing $10k/month.
Price question in the first reply = qualification test
NOT a buying signal
Your script
"Totally fair question. It depends on scope. Before I share numbers, what's the main goal with the site?"
They ghost → not a fit.
They answer → anchor price to outcome, not a generic range
If you're doing outbound and replying manually, you're bleeding deals
Every hour of delay = lower conversion
Our workflow
• Webhook catches replies in real-time
• Pre made reply templates
• AI researches if needed
From 4 hours/day on replies → 3 minutes
Speed compounds
💥 2-year client. Multiple luxury brands signed
Including Cartier
This wasn't one campaign. It was sustained outbound infrastructure
→ New market testing every quarter
→ Playbook refinement based on reply data
Consistent pipeline beats one-off wins.
How to segment your list:
By company size:
1-5 emp → different pain than 50+
By role:
Founder, CMO, Sales
Same offer, different angle
By geography:
US, UK, Canada, EU
Relevance lines matter
By problem signal:
No hiring page, running ads, raised funding, hiring, new website
Warm outreach checklist:
→ Does the prospect instantly understand why you reached out?
→ Does your opener match the signal (hiring, funding, launch)?
→ Is your CTA natural for this trigger strength?
→ Did you QA the first batch before scaling?
First touch email checklist:
→ No links
→ No tracking pixel
→ No calendar booking
→ Under 120 words
→ One simple question
Keep volume lower per mailbox. Scale only if replies hold
Reputation is fragile in 2026.
Clean lists and tight targeting beat volume tricks every time
78 leads in a few weeks for a café that just launched.
💥Goal: Book enterprise events.
Results:
→ 376 replies (13.17% reply rate)
→ 78 positive (20.74% of replies converted)
Cold email works for local businesses too.
You just need the right targeting.
Stop optimizing for open rates.
Apple Mail auto-opens emails to preload images.
Google proxies load images remotely.
Tracking pixels flag you as spam.
You're seeing "opens" from bots, not humans.
Track replies instead. That's the only signal that matters.
Just talked to a founder with 0.5% reply rate.
2000 emails per day. 6000 leads per campaign. Zero deliverability checks.
He thinks he needs better copy.
The real problem? Most of those emails never reached an inbox.
Volume doesn't fix a broken foundation.
Best cold email infra combo:
Google Workspace (primary) + Shared SMTP (secondary)
→ 3 inboxes per domain
→ 15-25 sends per inbox
→ Domains spread across 2-3 registrars
→ 14-day warmup minimum
Two lanes, one playbook.
Need more volume?
Add more domains at 3 inboxes each.
Never push an inbox past 20-25 sends per day.
Pushing existing inboxes = fastest way to tank deliverability.
That open tracking pixel is killing you.
It makes you look like marketing spam to filters.
And Apple Mail triggers fake opens anyway.
Turn it off. Track replies.
If nobody's responding, you have a deliverability or messaging problem. Open rates won't tell you which.
294 emails sent.
15 replies.
4 became clients
What made the difference?
・We talked about their real problems in their words
・Showed relevant case studies from their industry
・Kept volume small but targeted
Small is enough when your message hits
Clarity beats complexity
Founder on a call today:
→ Sending 2000 emails/day
→ 6000 leads per campaign (broad targeting)
→ No deliverability monitoring
→ 0.5% reply rate
His question: "Should I rewrite my subject line?"
No. You need to figure out if you're even landing in the inbox first.
Diagnostic framework for cold email:
→ No replies = deliverability issue (check domain setup, warmup, list quality)
→ Replies but negative = targeting or messaging problem
→ Positive replies but no meetings = offer/CTA issue
Fix the actual problem, not the open rate.
Best signal for white label agencies:
Job postings.
Agency hiring a frontend dev = more work than people
Your pitch:
"Noticed you're hiring. That role takes 2-3 months to ramp. We white-label for agencies in that exact gap so projects don't stall."
Timely. Specific. Converts.
48 high-quality leads in 2 months.
Target: E-com Directors at brands doing €100M+
The constraint?
Hyper-narrow ICP. No room for spray-and-pray.
How:
→ Revenue filters + job posting signals
→ 3 playbooks (by seniority)
→ No generic templates
Small list = perfect targeting
You don't need personalized first lines.
You need tight segmentation.
When you email agencies that just posted a developer job, the situation IS the personalization.
Every agency owner in that segment reads it and thinks you're talking directly to them.
Context > flattery.
Every offer that converted had:
→ Real problem from customer conversations (not assumptions)
→ Proof with specific names and numbers
→ Minimal friction (easy yes, easy no)
→ Ask that matches the temperature
Drop one element, reply rates collapse.
Common cold email infra mistakes:
→ Rushing warmup (14 days minimum)
→ Too many inboxes per domain (3 is the sweet spot)
→ All domains from one registrar (easy to pattern-match)
→ No blacklist monitoring
→ Pushing volume instead of adding domains
Fix these first.
43 leads in 3 months for a product launch.
No brand. No awareness. Cold market.
What worked:
→ GTM strategy before the first email
→ Signal-based targeting (hiring, funding`)
→ Messaging around early adoption benefits
Launches fail when you treat outreach like a broadcast