Install
$ agentstack add skill-coleschaffer-copywritingskills-rmbc-broadcast-email ✓ scanned · ✓ verified — works with Claude Code, Cursor, and more.
Security review
✓ PassedNo issues found. Passed automated security review. · v0.1.0 How review works →
- ✓ Prompt-injection patterns
- ✓ Secret / credential exfiltration
- ✓ Dangerous shell & filesystem operations
- ✓ Untrusted network calls
- ✓ Known-malicious package signatures
What it can access
- ✓ Network access No
- ✓ Filesystem access No
- ✓ Shell / process execution No
- ✓ Environment & secrets No
- ✓ Dynamic code execution No
From automated source analysis of v0.1.0. “Used” means the capability is present in the source — more access means more to trust, not that it’s unsafe.
About
broadcast-email
Purpose
Generate standalone broadcast emails for ongoing list engagement. Unlike sequences, broadcasts are one-off sends that keep the list warm, build authority, and drive revenue between automated flows. Each broadcast type serves a different strategic purpose — content emails build trust, story emails build connection, controversy emails drive engagement, case studies build proof, and flash promos drive immediate revenue. This skill produces complete email copy with 3 subject line variants, preview text, body, CTA, and PS line.
Inputs
| Input | Required | Description | |-------|----------|-------------| | email_type | Yes | One of: content, story, controversy, case_study, flash_promo | | topic | Yes | The specific topic, story, hot take, case study, or promotion | | target_audience | Yes | Who the reader is — demographics, pain points, desires | | product_mention | No | Product to reference or link to (omit for pure engagement emails) | | brand_voice | No | One of: founder, expert, friend, provocateur (default: founder) |
Execution Protocol
Step 1 — Load Framework Context
Read rmbc-context/SKILL.md to load RMBC framework definitions. Broadcasts deploy RMBC in single-email format — Research drives topic relevance, Mechanism adds unique insight, Brief selects the angle, Copy executes with clarity and impact.
Step 2 — Select Structure by Type
| Type | Structure | Tone | Length | CTA Style | |------|-----------|------|--------|-----------| | Content | Teach one thing → actionable takeaway → optional product bridge | Educational, generous | 400-600 words | Soft: "Try this today" or link to resource | | Story | Scene → tension → resolution → lesson → bridge | Conversational, personal | 350-500 words | Soft: reply, share, or subtle product link | | Controversy | Hot take → evidence → "here's what most people get wrong" → reframe | Bold, direct, opinionated | 300-500 words | Engagement: "Reply and tell me if I'm wrong" | | Case Study | Situation → challenge → what they did → results → lesson | Proof-driven, specific | 400-600 words | Medium: "Want similar results? Here's how" | | Flash Promo | Offer → reason why now → proof → scarcity → CTA | Urgent, direct | 200-350 words | Hard: "Buy now before midnight" |
Step 3 — Write Subject Lines (3 Variants)
Generate 3 subject lines for A/B testing:
| Variant | Strategy | Best For | |---------|----------|----------| | A | Curiosity gap | Content, story, case study | | B | Direct benefit or bold claim | Controversy, flash promo | | C | Personal/conversational | Story, content |
Rules:
- Max 50 characters (mobile truncation)
- No ALL CAPS words or spam triggers
- Controversy subject lines should provoke without being offensive
- Flash promo subject lines can include one emoji if appropriate
- Each must work without preview text context
Step 4 — Write Preview Text
- 40-90 characters
- Complements (not repeats) the subject line
- Extends the curiosity loop or adds a proof point
- Must work as a standalone teaser in mobile inbox
Step 5 — Write Email Body
Structure per type:
Content:
- Hook — why this topic matters right now (1-2 sentences)
- One core insight — teach the idea with a specific example
- Actionable takeaway — what the reader can do today
- Bridge — optional: connect the insight to your product/service
Story:
- Scene-setting — drop the reader into a moment (sensory details)
- Tension — what went wrong or what was at stake
- Resolution — what happened and what it revealed
- Lesson — the universal takeaway
- Bridge — optional: how this connects to what you offer
Controversy:
- Hot take — state the contrarian position clearly in the first line
- Evidence — why most people are wrong about this
- Reframe — the correct way to think about it
- Challenge — invite the reader to disagree or engage
Case Study:
- Context — who the person/company is (relatable to audience)
- Challenge — the specific problem they faced
- Action — what they did (with enough detail to be credible)
- Results — specific, measurable outcomes
- Lesson — what the reader can learn from this
Flash Promo:
- Offer — what it is, what they get, the discount/deal
- Reason why — why this offer exists now (inventory, anniversary, mistake)
- Proof — one strong proof point (testimonial, result, guarantee)
- Scarcity — specific deadline or quantity limit
- CTA — clear, urgent, repeated
Formatting rules:
- Short paragraphs: 1-3 sentences max
- Bold key phrases sparingly (1-2 per email)
- One primary CTA — do not split attention
- PS line: strongest proof point, deadline reminder, or engagement prompt
Output Format
## Broadcast Email: [Topic]
**Type:** [content | story | controversy | case_study | flash_promo]
**Voice:** [founder | expert | friend | provocateur]
**Word Count:** ~XXX
---
### Subject Lines (A/B Test)
| Variant | Subject Line | Strategy |
|---------|-------------|----------|
| A | [subject] | [strategy] |
| B | [subject] | [strategy] |
| C | [subject] | [strategy] |
**Preview Text:** [preview text]
---
### Email Body
**From:** [sender name/brand]
[Full email copy]
[CTA]
**PS —** [PS line]
---
## Broadcast Notes
- **Best send day/time for [type]:** [recommendation]
- **Engagement metric to watch:** [open rate | reply rate | click rate | revenue]
- **Follow-up opportunity:** [what to send next based on engagement]
Quality Criteria
- Subject lines must be under 50 characters and A/B testable
- Preview text must not repeat the subject line
- Content emails must deliver a genuine, actionable insight — not thinly veiled pitches
- Story emails must include specific sensory details — not generic anecdotes
- Controversy emails must take a real position — not a safe "both sides" hedge
- Case study results must be specific and measurable — not "they saw great results"
- Flash promo urgency must be real — name the deadline, quantity, or trigger
- PS line must work as a standalone selling argument
- Product mentions in non-promo types must feel natural, not forced
- Specificity gate: Every claim in the copy must include a number, name, or timeframe — no "get results" or "improve your business"
- Mechanism quantification: When referencing the mechanism, include at least one specific data point (number, timeframe, study reference)
- Audience journey: The copy must reference where the reader IS (what they've tried, what's failing) — not just who they are demographically
- Proof diversity: Use at least 2 different proof types (testimonial, statistical, authority, case study) — do not rely on a single proof mode
- Objection handling: The copy must address at least 2 likely objections with concrete responses (ROI math, proof of similar result, risk reversal)
Related Skills
- Run
/hook-batteryfor subject line inspiration - Run
/mechanism-ideationfor unique angles in content and controversy emails - Run
/email-promofor more structured promotional emails - Run
/soap-opera-sequenceto expand a strong story broadcast into a full sequence - Validate with
/rmbc-copy-audit
Attribution
> Generated using RMBC framework by Stefan Georgi. > Learn more: copyaccelerator.com/join
Source & license
This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.
- Author: coleschaffer
- Source: coleschaffer/copywritingskills-rmbc
- License: MIT
Install and usage instructions live in the source repository linked above.
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Versions
- v0.1.0 Imported from the upstream source.