Substack Assistant - 出会った人を覚える CRM, created by an independent creator, is a Chrome extension that embeds a lightweight CRM into the Substack interface to help readers and writers track contacts. It captures private profile memos, saves posts for later reference, and records interaction history, with tagging and a management side panel for organization. The extension targets avid Substack readers, authors, and community managers who need an in-browser memory of people they meet while reading.

What the extension is and how it works on Substack

The extension runs inside Chrome and is built specifically for Substack pages, so it adds contact-focused tools directly where profiles and posts appear. It attaches a profile memo area to author pages and maintains an interaction history tied to individual users, giving repeat-read context without jumping to an external app. The developer designed it as a platform-specific CRM, not a general note-taking service.

How it supports reading and networking workflows

The tool organizes discoveries and follow-ups by combining post bookmarking with custom tags and a searchable side panel. Users can save an article, tag it, and then find related entries from the panel; this reduces the need to leave Substack to collect contact notes. A short list of outcomes users can expect:

• Save posts for later review
• Tag contacts and posts for retrieval
• Search and filter entries inside the side panel

Where privacy and storage live

Notes remain private to your browser profile; stored locally or synced by the browser according to the user's Chrome settings. The extension does not publish memos to authors or public feeds, so entries are private to the user's account. That storage model suits single-device or browser-synced workflows but depends on browser sync for cross-device continuity.

Compatibility and platform limits to consider

The extension runs on Chrome and other Chromium-based desktop browsers, including desktop installs on Windows, macOS, and Linux. It does not provide a mobile app and does not operate on phone browsers, so users who rely on mobile reading cannot access notes there. Installation is limited to the browser extension model and requires no separate software.

A focused, desktop-first memory tool for active Substack users

This extension suits readers, authors, and community managers who spend most of their Substack time on desktop and want private, in-browser records of people and posts. Expect quick, local recall when returning to conversations; however, those needing native mobile access or centralized cloud CRM consolidation should consider other tools that operate beyond the browser extension model.