Project

Joy Cork / Email Explorer logo

Joy Cork / Email Explorer

Visualizing 12,000 winery newsletters to find what works

Building $0 MRR
Project Stats
Nov 2025
Started
project
500
Commits
total
~17.8k
Lines
of code
68%
AI
assisted

The Origin

While exploring the wine industry for Joy Cork, I started subscribing to winery newsletters. Then I kept subscribing. And subscribing.

After a year, I had close to 12,000 emails from wineries across California, Oregon, and Washington. That’s a goldmine of competitive intelligence—if you can make sense of it.

The Problem

Wineries send a lot of email. Most marketing teams have no idea what their competitors are doing, what subject lines work, or when the best time to send is.

Email Explorer visualizes all of this. It’s like a Bloomberg terminal for winery email marketing.

How It Works

  1. Collection — ActionMailbox receives forwarded newsletters
  2. Processing — Claude extracts key data: subject, sender, offers, events, wines mentioned
  3. Categorization — AI tags each email by type (club offer, event invite, new release, etc.)
  4. Visualization — Dashboard shows trends, patterns, and insights

What We’ve Found

Some early insights from the data:

  • Tuesday 10am is the most common send time (but not the most effective)
  • “New Release” appears in 23% of subject lines
  • Club-exclusive offers get 2.4x higher open rates (based on self-reported metrics)
  • Thanksgiving week has 47% more sends than average

What’s Next

  • Public dashboard for wineries to benchmark their email performance
  • Alert system for competitive monitoring
  • AI-generated suggestions for email improvements
  • Integration with ESP platforms (Mailchimp, Klaviyo)

Tech Stack

Rails 8 PostgreSQL Tailwind CSS Hotwire Claude API ActionMailbox

Key Features

  • Email collection from 500+ wineries
  • AI-powered content categorization
  • Trend analysis across regions
  • Subject line effectiveness scoring
  • Campaign timing insights
  • Competitive benchmarking

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