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EmailChecked 2026-09-06
EmailCAN I VIBECODE
Spark Premium?
KINDAYou can build the valuable core, but the established product has meaningful operational complexity. Pick one narrow promise for v1.
BUILD FIRST
- One specific customer type and one primary use case
- A vertical slice that completes the main job without manual workarounds
- Visible limits, review steps, and a fallback when an external dependency fails
LEAVE FOR LATER
- Broad third-party integrations
- High-scale collaboration, syncing, and permissions
- Automation that can cause harm without human review
RESEARCH NOTES
What this tool actually does.
How to Upgrade Spark to paid plans | Spark Help Center — Team collaboration is a unique set of features that makes collaboration in emails smooth and efficient. When your team needs more advanced collaboration fe
RESEARCHED BUILD PROMPT
Give this to your coding agent.
Build a focused replacement for Spark Premium for one clearly defined user, based on this public product description: “How to Upgrade Spark to paid plans | Spark Help Center — Team collaboration is a unique set of features that makes collaboration in emails smooth and efficient. When your team needs more advanced collaboration fe” Do not copy the original brand, proprietary assets, name, logo, UI, or copy; create an original visual system.
Core workflow
- Recreate only the narrow primary workflow described above, with model the product's primary input → workflow → output in an editable interface; make state, errors, and external dependencies visible; provide portable data, export, and deletion controls; include fixture data and a deterministic happy-path test.
- Keep the product name and source description in a research note in the README, and turn every uncertain behavior into an explicit assumption or user setting rather than inventing a feature.
- Use a small React/TypeScript app with a portable JSON or SQLite data model, clear loading/empty/error states, and adapters around external services. Seed realistic demo data so the complete workflow works without paid credentials.
Scope boundaries
- Out of scope for v1: feature-for-feature parity; broad integrations; unverified enterprise or scale claims. Do not promise feature parity, proprietary data, or enterprise reliability.
Include a README with setup, environment variables, data model, implementation decisions, privacy behavior, testing instructions, and important limitations.