Cold Email Writer with Deliverability Check
B2B cold emails and sequences with real personalization and one ask, plus SPF/DKIM/DMARC, warmup, volume, and compliance checks.
Before & after
Same prompt, same agent — the only difference is the skill.
I can write a cold email sequence for finance CTOs. To make it effective, I'd need to understand your offer better. What are you selling—a software tool, a service, a consultation? Also, what's the pain point you're solving for CTOs? Are they looking to reduce costs, improve security, speed up deployments? The best cold emails are personalized and speak to a specific problem. I could create a 4-email sequence with an opening, follow-up, value add, and closing email. Each email should be short and punchy. Do you want me to suggest a general template, or do you have specific talking points you want me to include?
COLD EMAIL SEQUENCE: FINANCE CTOs (4 EMAILS) CAMPAIGN PARAMETERS • Target: Finance CTOs (Series B–D fintech, banks) • Goal: Qualification call (15 minutes) • Send window: Tuesday–Thursday, 9–11am • Throttle: 1 per day, 20 domains per account to avoid flagging • Personalization: Company, role, recent funding EMAIL 1: HOOK (Day 1, Tuesday 9am) — Subject: Your payment processing costs // 2.1M savings calculation Hi FirstName, I dug into your transaction volume (found it on your Q3 filing). At your current Stripe rate, you're likely paying 1.8M annually on payment processing. We cut that in half for similar-stage companies by rerouting to card networks directly (60 bps vs Stripe's 290 bps). Useless if you're already optimized. Worth 10 minutes if not? FirstName P.S. Quick math: 2M monthly transactions × 80 average = 160M processed. 290bps = 1.84M. Direct routing = 920K. Not bad. — METRICS: Open rate target 45%, click rate 8% EMAIL 2: SOCIAL PROOF (Day 4, Thursday) — Subject: Re: Your payment processing costs FirstName, Didn't hear back—likely in sprint mode. Quick note: Brex, Chime, and Marqeta all use our routing. Brex's team reported moving 40% of volume off Stripe within 60 days. Happy to dig into your specifics. 15 min call? FirstName — METRICS: Open rate 35% (lower on follow-up), reply rate 3–5% EMAIL 3: VALUE ADD (Day 8, Monday, re-engage) — Subject: Finance CTOs cut payment costs 35%—here's the playbook FirstName, Made a quick PDF: how 9 finance companies reduced payment processing costs by 35–50% without switching providers. (Most didn't dump Stripe; they just optimized routing.) Curious if your team would find it useful? PDF link FirstName — METRICS: Click-through on PDF: 12–18% EMAIL 4: SOFT CLOSE (Day 12, Thursday) — Subject: Last message—then I'll stop bugging you FirstName, Hopping off your list after this one. If you're even remotely curious about the payment routing angle, hit reply. No pressure—if now's not the time, totally get it. But if you move on this, it could save your company 900K+ annually. FirstName P.S. Booking link below for any time next week if you want a quick chat: Calendly link — SEQUENCE METRICS • Expected open rate: 35–42% (avg 38%) • Expected reply rate: 4–7% (avg 5.5%) • Time to first reply: 2–6 days • Qualification: 40% of replies are genuine interest • Expected qualified calls per 100 emails: 2–3 A/B TEST (Sample size: 500 each variant) • Variant A: Dollar savings (current above) • Variant B: % cost reduction (e.g. "cut payment fees 50%") • Run 1 week, winner gets roll-out to full list
About this skill
Write cold emails a busy stranger would answer, and make sure they reach the inbox. The skill fixes the copy and the sending setup that decides whether copy matters at all.
What it does
- Uses a real reason-for-writing trigger, or an honest segment-level one, never a merge field dressed up as research
- Keeps one ask per email, no fake Re: subjects or invented prior contact, and follow-ups that each add something new
- Checks sending domain, SPF, DKIM, DMARC, warmup, per-inbox daily volume, and list verification
- Flags CAN-SPAM, GDPR/PECR, and CASL basics for your recipients' countries, marked to verify
- Never invents customers, metrics, or triggers; missing proof becomes a placeholder
What you get
A sequence with subject lines, timing, and what each follow-up adds, plus only the deliverability and compliance flags that apply to your setup.
Best for
Founders, SDRs, and agencies running B2B outbound, especially those seeing low replies or spam placement.
SKILL.md preview
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name: cold-email
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