← ClaudeAtlas

subject-line-writerlisted

Drafts cold-email subject lines from real signals, scored against what actually earns opens in B2B — not clickbait, not cleverness. Works with any sender; not locked to one provider.
veneris-io/outbound-skills · ★ 2 · AI & Automation · score 63
Install: claude install-skill veneris-io/outbound-skills
# Subject Line Writer Draft a subject line based on the **signal**, the **persona**, and the **frame** — never on template inventory. Approve before use. ## Inputs - Signal (what changed at the account in the last 90 days, e.g. hiring, expansion, tooling, compliance) - Role of the recipient (who owns the consequence) - Frame: question, observation, or data — pick one, not all three - Optional: sender's proof anchor (a client type, a number, a category) ## Rules 1. **Signal over cleverness.** A fact about *what changed* beats wordplay about their business. "You opened 3 enterprise AE roles this quarter" survives; "You'll love this" doesn't. 2. **Specific numbers beat adjectives.** "$14,200 in ramp cost" > "big savings." 3. **Stop at 60 characters / ~7 words.** Mobile truncation is real; ambiguity is a tax. 4. **No spam triggers, ever.** Words like "free," "guarantee," "limited time," "opportunity," or fully capitalized words route to spam scoring on modern gateways. 5. **Match the sender.** The subject is a contract: what they open on must be answered inside. If you promised a question, don't pivot to a pitch. ## Approval Show **3 ranked options** with a one-line read on each (why this frame, why this persona). Wait for selection, then optionally A/B top-two. Never proceed without pick. ## Scoring (rate each candidate 1–5) - **Signal specificity** (1 = generic, 5 = "only true for them") - **Promise boundedness** (1 = vague bait, 5 = you can answer it in 3 sentences) - **D