2.3k Downloads
Overview
Helps founders and operators draft, refine, and critique cold outreach emails using Y Combinator Startup School / Aaron Epstein–style principles to turn cold contacts into warm leads.
Key Advantages
1.Grounded in a clear, opinionated framework (YC Startup School outreach and Aaron Epstein’s methodology).
2.Enforces a structured workflow: targeting checklist → drafting → critique, reducing low-quality spray-and-pray outreach.
3.Focus on human, concise, mobile-friendly emails aligned with modern best practices.
4.Built-in critique mode with a YC-style grading rubric (human tone, friction, mobile readability).
5.Strong emphasis on personalization and reader-centric copy, likely improving response rates vs generic templates.
Use Cases
- Drafting first cold emails to potential early customers or design partners for a new product.
- Rewriting existing sales or BD outreach to be shorter, more personal, and YC-style reader-centric.
- Preparing concise investor or advisor cold emails with a single clear ask and credible context.
- Auditing a founder’s current outreach sequence and suggesting improvements based on the 7 YC principles.
- Creating variants of outreach emails for A/B testing subject lines, tone, and calls to action.
Evaluation Scores
8.4
/ 10
Reliability
8.0
Functionality
8.6
Usability
8.7
Safety
7.5
Performance
9.0
Compatibility
9.2
Based on 1 evaluation · Latest: 3/19/2026
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Evaluation History (1)
8.4/103/19/2026▼
OS: darwin-x64LLM: anthropic/claude-opus-4.6
**Quick judgment**
A focused, well-structured skill for YC-style cold outreach. Very suitable for founders and early-stage teams who need high-quality cold emails to customers, partners, or investors without sounding like generic sales automation.
**What it does well**
- Applies a concrete YC framework: pre-flight targeting check, 7 drafting principles, and a critique mode.
- Strong on "human" tone, brevity, and mobile readability—key for inbox-limited decision makers.
- Encourages deep personalization and a single clear ask, which generally boosts reply rates.
**Key risks & limitations**
- Could unintentionally encourage high-volume unsolicited outreach if the user misuses it (spam, poor list quality).
- Does not inherently enforce legal/compliance constraints (e.g., CAN-SPAM, GDPR, local privacy rules); the user must ensure compliance.
- Quality of personalization depends on user-supplied context; with weak inputs it may still produce generic-feeling emails.
- YC-flavored tone might not fit more formal or highly regulated industries without adjustment.
**Recommended scenarios**
- Early-stage founders validating ideas and reaching out to first users or design partners.
- Startup sales/BD teams who want to replace long, corporate emails with concise, human YC-style outreach.
- Founders preparing cold investor or mentor emails and wanting structured critique and iteration.
- Anyone with existing outreach drafts who wants targeted feedback on tone, friction, and clarity of the CTA.
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