Upload email stats and subscriber CSVs. GrowthSignals turns them into a clear overview: which posts drive subscribers, how topics perform, where links get clicks, and how your audience segments behave — without manual spreadsheets.
Email stats and subscriber CSVs are easy to download, but hard to compare across posts and time.
GrowthSignals ingests those files and builds dashboards you can actually use: drivers, topics, links, and audience — in one app.
These are the areas in the product today — each maps to a screen after you sign in.
Top growth drivers and topic performance at a glance, plus link and audience summaries.
Topic-level opens and engagement from your post metrics, with optional AI-assisted topic labels.
Short links and click tracking by topic and domain.
Segments from subscriber activity and attributes in your CSV.
Conversion funnel and deliverability-style views from your subscriber data.
Upload Substack email stats and subscriber exports; processing runs in the background.
Built for Substack’s CSV exports — no API keys required to start.
Download email stats and subscriber exports from your publication.
Add your files; the app imports rows and aggregates metrics.
See overview, content, links, audience, and retention — updated from your latest uploads.
Create an account and connect your publication in settings.
Get started