List Growth Designer
Designs acquisition, incentives, compliant opt-in capture, and referral growth for owned email lists.
The skill clearly limits scope, asks before memory writes, forbids direct consent-registry writes, and treats imported records as untrusted. Data flow, proposal authorization, and external effects are described. Seven points are deducted because sensitive-data minimization, retention, revocation/rollback, and IP/UA handling boundaries are incomplete; publisher identity is unverified and attribution evidence is limited.
The contract, completion criteria, inputs, outputs, handoffs, and ambiguity-stop rule are coherent, and keyless operation is stated. Twelve points are deducted because static review caps this dimension at 10; there are no skill-specific key-path tests, abnormal-input examples, or reproducible execution evidence, and referenced shared files are not included in the supplied material.
Triggers, audience, inputs, outputs, non-fit boundaries, and jurisdiction prompts are explicit, with Chinese labeling and no core dependence on unreachable overseas services. Three points are deducted because jurisdiction handling is only broadly grouped as US/EU/Canada/other, and evidence for mainland-China practice, environment variation, and finer anti-misrouting boundaries is limited.
The skill has structured metadata, versioning, an Apache-2.0 license, Quick Starts, contract, data-source notes, save rules, limits, handoffs, and next-skill guidance. Four points are deducted for no clearly named maintainer, changelog, or update path; the supplied security policy supports version 17.x while the skill declares 18.0.0, creating governance inconsistency.
The expected output covers channels, lead magnets, opt-in capture specifications, referral mechanics, and labeled growth metrics, making it useful for downstream work. Nine points are deducted because representative outputs were not statically verified, execution depends on user data and other skills for implementation, and comparative benefit or cost-effectiveness is not demonstrated.
The skill specifies auditable data sources, metric labeling, and a handoff structure, while the repository includes general CI tests. Seven points are deducted because no skill-specific tests, third-party corroboration, or independent reproduction evidence is supplied; repository-level tests do not establish this skill’s key-path validity.
- Before launch, define minimization, retention, access control, and deletion/rollback procedures for IP/UA and other consent evidence.
- Treat the compliance notes as guidance, not legal conclusions; verify opt-in, referral incentives, and marketing-email requirements for the specific jurisdiction.
- Confirm that the referenced shared files and registry-events.py are reachable and version-compatible in the target host, or the proposal and handoff may not be actionable.
- Publisher identity has not been verified by the FollowSkills enterprise registry.
What does this skill do, and when should you use it?
List Growth Designer is an Email/SEND Setup skill in Aaron Marketing Skills. It helps users choose list-acquisition channels, design a lead magnet or signup incentive, specify a single- or double-opt-in flow, and build a referral loop. It also defines subscriber-growth, cost-per-opt-in, and confirmation-rate targets, which must be labeled Estimated or User-provided. It does not build signup UX, write confirmation emails, record consent, or calculate SEND scores.
Reads the growth goal, audience, offer, current signup points, list size, growth history, and compliance jurisdiction; evaluates owned, earned, and paid acquisition channels; proposes an honest lead magnet or incentive aligned with the emails the list will receive; specifies single versus double opt-in and consent evidence such as timestamp, source, lawful basis, checkbox wording, and optional IP/UA; designs referral incentives, sharing mechanics, attribution, and quality controls; and produces a list-growth plan, capture-flow specification, referral-loop mechanics, labeled growth targets, and a handoff summary for consent-registry or email-sequence-designer. After confirmation, it can save the plan to the specified memory path and submit the consent-capture specification through an authorized propose request.
- A founder wants to grow an owned list and needs to compare site, content, social-bio, partnership, and paid acquisition channels.
- A marketing team is launching a lead magnet and needs an incentive that matches the emails subscribers will actually receive.
- A team operating in the US, EU, Canada, or another jurisdiction needs a compliant single- or double-opt-in capture specification.
- A newsletter operator wants a referral loop with attribution and safeguards against low-quality incentivized signups.
- A team has ESP exports but no planning baseline and needs targets grounded in its own growth history.
What are this skill's strengths and limitations?
- Clear scope covering acquisition strategy, signup incentives, opt-in-flow specification, and referral growth.
- Separates Measured, User-provided, and Estimated values instead of inventing industry benchmarks.
- Requires consent evidence to be considered at acquisition and hands formal records to consent-registry.
- Works through pasted or manually exported ESP and analytics data without requiring paid APIs or MCP.
- Does not build signup forms or popup UX, and does not write opt-in records.
- Does not write welcome or double-opt-in confirmation emails or compute SEND/EQS.
- Needs current list and growth data from the user; it cannot invent a baseline.
- Compliance guidance is not legal advice, and the source provides no platform-level test results or independent test-suite evidence.
How do you install this skill?
Install the repository in Claude Code with /plugin marketplace add aaron-he-zhu/aaron-marketing-skills, followed by /plugin install aaron-marketing@aaron; or install the collection on an Agent Skills-compatible host with npx skills add aaron-he-zhu/aaron-marketing-skills. The skill file is email/setup/list-growth-designer/SKILL.md.
How do you use this skill?
Use a prompt such as Plan how to grow my email list for [audience]. Current signup: [where/how]. Goal: [+N subscribers / rate] over [period]. You can also request Design a lead magnet + a compliant double-opt-in flow for [offer]. Jurisdiction: [US / EU / Canada]. Provide the goal, audience, current signup source, list size, growth history, and jurisdiction. Confirm before any memory write.
How does this skill compare with similar options?
Unlike landing-optimizer, this skill handles the acquisition strategy above the signup page rather than the page or popup UX. Unlike consent-registry, it proposes the consent-evidence specification but does not write canonical consent records. Unlike email-creative-builder and email-sequence-designer, it does not write confirmation copy or build the welcome flow.