Works with the AI tools you already use

    Claude CodeClaude CodeCursorCursorCodex CLICodex CLIGitHub CopilotGitHub CopilotGemini CLIGemini CLI+20 more

    Newsletter Engine

    1

    Professional newsletter writer that turns notes into high-engagement Substack issues and email campaigns.

    $8.99

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    Newsletter Engine

    Newsletter Engine

    Example session with this skill installed

    Help me write this week's Substack. I want to talk about why 'ugly' UI can sometimes convert better than polished designs, based on my latest A/B test. Audience is product designers.

    • Read your context and instructions
    • Compiled the newsletter engine

    Subject Line Option: 1. Why your "perfect" design is killing your conversion.
    Preview Text: The surprising truth about the A/B test we ran last Tuesday.

    (Newsletter Body)
    You've spent forty hours perfecting the border-radius on that CTA. But here's the kicker: it's not working...

    Connects securely to your tools. The creator never sees your data.

    What you get

    Draft full Substack issues from a single theme or experience.Generate high-open subject lines and preview text for email campaigns.Convert rough technical notes into a teaching-style educational newsletter.Create curated link digests with personality-driven commentary.Design low-friction 'Reply-to-this-email' calls to action to build engagement.

    About this skill

    The ultimate newsletter copywriting partner

    Newsletter Engine is a specialized skill for AI agents that transforms rough ideas, notes, or topics into high-converting, professional email issues. Designed by a veteran content strategist, it moves beyond generic AI drafting to create emails that feel like a conversation with a smart friend rather than a marketing blast.

    What it does

    This skill systematically handles the entire newsletter production workflow:

    • Multiple Formats: Choose between high-impact thought leadership essays, curated digests, educational tutorials, or narrative-driven stories.
    • Strategic Subject Lines: Generates four distinct subject line options (curiosity, value, bold claim, and personal) to maximize open rates.
    • Professional Structure: Includes preview text, hooks that grab attention, rhythmic body copy, and high-engagement calls-to-action (CTAs).
    • Audience-Centric Voice: Writes directly to the individual "you," ensuring the content builds trust and invites replies.

    Why developers and creators love it

    Unlike standard prompts, this skill enforces specific newsletter writing principles, such as varying sentence length for rhythm and ensuring white space for readability. It’s perfect for Substack authors, SaaS founders, and professional consultants who need to maintain a consistent mailing schedule without the writer's block.

    How to install

    Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.

    ~30 seconds
    1. 1

      Download the ZIP

      Free skills download straight away. Paid skills unlock right after purchase.

    2. 2

      Unzip into your skills folder

      Every agent reads skills from one folder on your machine. Drop the unzipped folder in there.

    3. 3

      Ask your agent to use it

      Restart the agent if it was already running. It picks the skill up automatically - no config needed.

    Skills folder by agent

    Click the path to copy it. Create the folder if it does not exist yet.

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    Fresh listing

    Recently published to Agensi

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    Trust & safety

    Security scanned

    Verified clean 3 months ago

    • Passed all security checks, Safe to install

    Listed3 months ago

    Frequently Asked Questions