Why This Matters
Cold email is still the highest-ROI outbound channel for B2B. But most founders either:
1. Overspend on tools they don't need, or
2. Never start because the setup feels overwhelming
This guide gives you the exact stack, the math, and the timeline to go from zero to sending in 3 weeks for under $300/month.
The Stack
1. Domains ($60/year)
Buy 5 lookalike domains. NEVER use your main business domain for cold email.
Naming conventions:
Where to buy: Namecheap, Cloudflare, Porkbun
For each domain, set up:
SPF record
DKIM signing
DMARC policy
Your email provider will give you the exact records. This takes 10 minutes per domain.
2. Inboxes ($40/month)
Create 2 inboxes per domain = 10 total.
Naming: [email protected] + [email protected]
Provider: Google Workspace ($6/user/mo) or Outlook ($6/user/mo)
10 inboxes × $4/mo average = ~$40/month
3. Sending Tool: Instantly ($97/month)
Instantly handles:
Email warmup (automated)
Smart sending rotation across inboxes
A/B testing subject lines
Reply detection
Deliverability monitoring
The $97/month Growth plan covers everything you need.
4. Email Verification: Reoon ($30/month)
Verify EVERY email before sending. This is non-negotiable.
Bad emails → bounces → domain reputation damage → spam folder
Reoon catches:
Invalid emails
Disposable emails
Catch-all domains (risky)
Role-based emails (info@, sales@)
Only send to verified, valid emails.
5. Lead Sourcing ($50-100/month)
Options:
Sales Navigator ($99/mo — the gold standard for B2B)
Apollo.io (free tier for basic, $49/mo for good)
Scraping tools (various)
Manual sourcing from directories, databases, communities
The lead source matters MORE than any other tool. A perfect email to the wrong person = zero results.
The Volume Math
10 inboxes × 20 emails/day = 200 emails/day
200 emails/day × 20 working days = 4,000 emails/month
2-email sequence = 2,000 unique leads/month
Reply Rate | Conversations/mo | Cost per Conversation |
|---|---|---|
2% | 40 | $7.50 |
5% | 100 | $3.00 |
10% | 200 | $1.50 |
15% | 300 | $1.00 |
At a $10K average deal size and 10% close rate from conversation → deal:
2% reply rate = 4 deals/mo = $40K
10% reply rate = 20 deals/mo = $200K
The reply rate is determined by your LIST, not your tool.
The Warmup Timeline
Week 1-2: Setup
Buy domains, set up DNS records
Create inboxes
Connect to Instantly
Start automated warmup (Instantly handles this)
Do NOT send any cold emails yet
Week 3: Ramp
Start sending 5 emails/day per inbox (50 total/day)
Monitor deliverability in Instantly
Check for bounces (should be <2%)
Week 4: Full Volume
Ramp to 15-20 emails/day per inbox
Full volume: 150-200 emails/day
Monitor reply rates and adjust messaging
The 2-Email Sequence Template
Email 1 — The Question (Day 1)
Subject: [their company] pipeline
Hey [first name],
Quick question — does [company] run any kind of systematic outbound or pipeline generation, or is new business mostly referrals?
I work with B2B founders in [their industry] who are building predictable pipeline systems. Not sure if it's relevant for you, but curious.
[Your name]
Email 2 — The Bump (Day 4)
Subject: re: [their company] pipeline
Bumping this — the question stands.
Built the same system for 4 agencies. $4.2M in pipeline. $0 in ads.
If pipeline's running great, ignore me. If not, happy to share what's working.
[Your name]
Deliverability Checklist (Monthly)
[ ] Check bounce rate (<2%)
[ ] Check spam complaint rate (<0.1%)
[ ] Review inbox placement (use mail-tester.com)
[ ] Remove non-responding leads after 2 emails
[ ] Rotate underperforming inboxes
[ ] Add new leads to keep volume consistent
[ ] Check domain reputation (Google Postmaster Tools)
Want Us to Run This For You?
We build done-for-you pipeline systems for B2B founders. 4 channels. Same AI-powered approach. You just take the calls.
→ Follow Tanyo on LinkedIn for more
Tools mentioned
→ Reoon
→ HeyReach