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Build a newsletter summarizer that cuts weekly reading to 30 minutes

Consultant Justin Tan, a self-described low-coder, used Replit Agent over three days to build an app that pulls newsletters from Gmail, removes duplicate stories, summarizes them and archives the emails. His weekly newsletter reading dropped from 2-3 hours to two 15-minute sessions.

Replit Agent One public report
66
Proof
18/40
Payoff
20/25
Ease
20/20
Cost
8/15
How the score works
Difficulty
Beginner
Setup time
4 hr
Monthly cost
$25/mo
What it saves
2-3 hrs/week to 30 min

How to do it

  1. Describe the app to Replit Agent: connect Gmail, find newsletters, summarize them
  2. Connect your Google account and an AI model API key when it asks
  3. Test on a week of real newsletters and point out duplicate or missed stories
  4. Add an archive step so processed emails leave your inbox
  5. Run it on a schedule, such as twice a week

The prompt

Build a web app that connects to my Gmail, finds emails with the label 'Newsletters' from the last 7 days, extracts the main stories, merges stories that several newsletters cover, and shows a single digest with a 2-sentence summary and source link for each story. Add a button that archives all the processed emails. Use a simple login so only I can use it.

Where this comes from

One person reported it. Promising, not yet confirmed. Original report: Justin Tan (Substack).

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