Newsletter-Growth SaaS — Fluvius engineering case

The work

The client is the largest driver of engaged subscribers to many of the top US newsletters, growing audiences with real readers against realistic KPIs. We built the SaaS dashboard and an embeddable banner builder that publishers drop onto third-party sites.

The platform adds RSS-feed and podcast playback, and ties together Mailchimp, Stripe and TUNE on a Node.js / MongoDB back end.

Inside the product

Similar work

Building something like Newsletter-Growth SaaS — Dashboard & Banner Builder? Leave a number and one of the engineers who did this work picks it up.

A Fluvius engineer wearing the t-shirt the client sent the team

The other kind of proof

The client sent the engineers their t-shirts. Small thing, and the one we point at when someone asks what a long client relationship looks like from the inside — the people who built the dashboard were treated as part of the team that runs it.

A second product line

The same data, turned into lead generation.

The analysis suite runs a set of AI modules across a podcast’s public feed — keyword and episode optimisation, feed health, contact discovery, social audit, cadence and theme analysis, download data and sponsor matching. Every module writes into one report.

The report is the pitch. A prospect receives a scored audit against Apple Podcasts, Spotify and Google Search, every finding rated by severity with the fix written out beneath it, and a prioritised action plan carrying a time estimate on each step. It exports to PDF and to CSV.

The analysis suite module list — SEO and discovery modules alongside content strategy modules, with a run-all control and PDF export

A generated feed health report: an overall score, per-platform scores, issues ranked by severity with fixes, and a prioritised action plan

Start the conversation

Two minutes of questions about your own build, answered by a senior engineer. You get a written plan and a number before you commit to anything.

Newsletter-Growth SaaS — Dashboard & Banner Builder.

The same data, turned into lead generation.