(Instantly + Airtable + OpenAI + Google Calendar + Slack)

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This is the most advanced AI Inbox Management Automation for cold email agencies, appointment setters, and B2B lead generation teams.
The workflow turns every incoming reply from Instantly into classified, enriched, analyzed, and automatically handled actions — all without you touching the inbox.

Every function described below is taken directly from the JSON nodes inside your workflow.

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WHAT THIS AUTOMATION DOES (FULL BREAKDOWN)

1. Fetches Incoming Emails From Instantly (Unread, Latest in Thread)

The workflow starts by pulling unread replies using:
Fetch Email → Instantly Unibox API

It retrieves:

• Lead email

• Sender

• Email body

• HTML content

• Threaded messages

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2. Identifies Lead in Airtable Automatically

Using Get Lead Info, the system matches the Instantly reply to your Airtable lead record.

Instantly → Airtable match happens via email address.

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3. Converts HTML Emails to Clean Text for AI Processing

A custom HTML-stripping node: Filter HTML

The node:

• Removes tags

• Removes scripts/styles

• Decodes entities

• Cleans spacing

• Produces plain text for accurate AI classification

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4. Splits the Entire Thread & Orders Emails (Newest → Oldest)

Node: Split Out Mails + Order

AI extracts:

• Sender

• Message body

• Dates

• Entire thread in structured JSON

• Sorted from newest to oldest

This enables precise interpretation of context.

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5. Classifies Every Email Into 3 Core Outcomes

Node: Classify Email Response
It uses GPT-4o with rules baked into the prompt:

The system labels replies as:

✔ Ready to Schedule

✔ More Info Needed

✔ Not Interested

This classification drives the entire automation branch.

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PATH 1 — READY TO SCHEDULE

6. Checks Your Google Calendar Availability Automatically

Node: Check Availability

Workflow performs:

• Time zone conversion

• Comparing suggested times with your Google Calendar

• Checking your working hours (11:00–23:00 GMT+1)

• Returns:

  • "yes, [datetime]"

  • OR "no, but available at…"

Google Calendar is checked via:
Availibility node.

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7a. If Time IS Available → Auto-Write Confirmation Email

Node: Dates Available
AI generates a confirmed meeting email in clean HTML.

Airtable automatically updates:

Lead Status → Interested - RtS

Slack sends notification to your channel with:

• Lead name

• Received email

• Your response

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7b. If Time NOT Available → Auto-Send Scheduling Link

Node: Dates Not Available
AI writes a polite HTML email:
“None of these times work — here’s my cal.com link.”

Slack notification sent instantly.

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PATH 2 — MORE INFO NEEDED

8. Detects Questions Asked by Prospect

Node: Check If Question Is on the List

AI extracts:

• The exact question from the last email

• Searches in Pinecone vector DB for matching canned responses

• If unavailable → labels "unavailable"

Vector DB:

• Pinecone Vector Store

• Embeddings OpenAI

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9. If Answer Found → Auto-Write HTML Response

Node: Write MiN Response Question

The email is:

• Fully formatted in HTML

• Clean

• Spaced sentence-by-sentence

Airtable Status Update:

Lead Status → Interested - MiN

Slack notification is sent.

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10. If No Answer Exists → Notify You on Slack

Node: Slack13

This gives you immediate visibility.

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PATH 3 — NOT INTERESTED

11. Generates a Polite Feedback Request Email (HTML)

Node: NI Response

AI writes:

• “Thanks for the note.
  What made this not interesting?”

• In clean, ready-to-send HTML

• Max 1–2 sentences

• No greetings/sign-offs

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12. Airtable Status Is Updated Automatically

Node: Not Interested
Lead Status → Not Interested - NI

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13. Slack Notifications Across ALL Branches

Almost every major event triggers a Slack message:

• Prospect replied

• Your AI-generated response

• Classification results

• Availability results

• Missing Vector DB answers

Nodes:
Slack, Slack3, Slack6, Slack11, Slack13

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WHAT YOU GET (FULL PACKAGE)

This product includes the entire n8n workflow, covering:

Core Features

• Instantly → Email Fetch

• HTML → Clean Text Conversion

• Reverse Chronological Thread Extraction

• Email Classification (RtS / MiN / NI)

• Google Calendar Availability Matching

• Auto-Confirmation or Scheduling Link Emails

• Auto-Generated HTML Replies

• Pinecone Vector DB Question-Answering

• Personalized Email Response Generation

• Automatic Airtable Lead Status Updates

• Full Slack Notification System

Integrations Inside the Workflow

• Instantly.ai API

• Airtable CRM

• OpenAI GPT-4o

• Slack

• Google Calendar

• Pinecone Vector Database

• n8n Core Nodes

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WHO THIS IS FOR

This automation is perfect for:

• Cold email agencies

• Lead generation companies

• Appointment setters

• B2B outbound sales teams

• Automation agencies

• Solopreneurs using Instantly

• Anyone who wants a hands-free inbox

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WHY THIS IS EXTREMELY POWERFUL

Without this workflow, you would manually:

• Read email threads

• Identify intent

• Check your calendar

• Confirm times

• Write replies

• Search for canned answers

• Update Airtable

• Notify your team

This automation does ALL OF IT automatically.

Your inbox becomes completely autonomous, responding, classifying, updating CRM, and notifying your team — 24/7.

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