Classify cold email replies and notify via Telegram with OpenAI and Instantly

Open on n8n.io

$20/month : Unlimited workflows

2500 executions/month

Try free

THE #1 IN WEB SCRAPING

Scrape any website without limits

Try free

HOSTINGER

Early Deal
DISCOUNT 20%

Self-hosted n8n

Unlimited workflows - from $4.99/mo

Try free

#1 hub for scraping, AI & automation

6000+ actors - $5 credits/mo

Try free

1. Workflow Overview

Classify Cold Email Replies and Notify via Telegram with OpenAI and Instantly Automatically classifies incoming cold email replies as HOT, WARM, or COLD using AI and sends priority Telegram notific...

Best for

AI Summarization automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.webhook, n8n-nodes-base.respondtowebhook, n8n-nodes-base.if, n8n-nodes-base.set, n8n-nodes-base.stopanderror, @n8n/n8n-nodes-langchain.openai, n8n-nodes-base.telegram, n8n-nodes-base.gmail

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Devon Toh.

Original n8n.io source

1.1 Workflow description

Title: Classify cold email replies and notify via Telegram with OpenAI and Instantly
Workflow name: Classify cold email replies and notify via Telegram with OpenAI and Instantly

Classify Cold Email Replies and Notify via Telegram with OpenAI and Instantly

Automatically classifies incoming cold email replies as HOT, WARM, or COLD using AI and sends priority Telegram notifications with auto-acknowledgment for fast response times.

Who is this for? Outbound sales teams using Instantly for cold email who want instant lead classification and speed-to-lead automation.

What problem does this solve? Manually checking inboxes for replies is slow. Hot leads go cold while you sleep. This workflow classifies replies in seconds, notifies you on Telegram, and auto-acknowledges warm/hot leads so they know you're responsive.

How it works:

Instantly Reply Webhook - receives reply event from Instantly
Respond 200 OK - acknowledges webhook immediately
Validate Payload - checks required fields (email, reply body)
Extract Lead Fields - normalizes lead data (email, name, subject, campaign)
Classify Reply - OpenAI - GPT-4o-mini classifies as HOT/WARM/COLD with reasoning
Parse Classification - extracts classification + carries forward lead data
Is HOT? / Is WARM? - routes to the right notification branch
Telegram - HOT/WARM/COLD Lead - sends priority-formatted notification
Auto-Ack HOT/WARM Gmail - instantly sends acknowledgment email to engaged leads
Log Reply to Sheet - logs everything for tracking

Setup:

Add credentials: OpenAI, Gmail, Telegram Bot, Header Auth
Replace YOUR_TELEGRAM_CHAT_ID with your chat ID (message @userinfobot)
Create a Google Sheet with columns: timestamp, lead_email, lead_name, classification, campaign, subject, reply_snippet, reasoning, auto_ack_sent, manual_reply_sent, manual_reply_at
Replace YOUR_GOOGLE_SHEET_ID with your sheet ID
Configure Instantly webhook: Settings > Integrations > Webhooks > reply_received event > paste your n8n webhook URL

Customization:

Edit the OpenAI system prompt to adjust classification criteria
Modify auto-ack email copy in the Gmail nodes
Adjust Telegram message formatting per branch

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Instantly Reply Webhook

Type / Role: n8n-nodes-base.webhook - webhook
Config choices: Version 2

Block 2 - Respond 200 OK

Type / Role: n8n-nodes-base.respondToWebhook - respondToWebhook
Config choices: Version 1.1

Block 3 - Validate Payload

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 4 - Extract Lead Fields

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 5 - Stop - Invalid Payload

Type / Role: n8n-nodes-base.stopAndError - stopAndError
Config choices: Version 1

Block 6 - Classify Reply - OpenAI

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 7 - Parse Classification

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 8 - Is HOT?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 9 - Is WARM?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 10 - Telegram - HOT Lead

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 11 - Telegram - WARM Lead

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 12 - Telegram - COLD Lead

Type / Role: n8n-nodes-base.telegram - telegram
Config choices: Version 1.2

Block 13 - Auto-Ack HOT Gmail

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 14 - Auto-Ack WARM Gmail

Type / Role: n8n-nodes-base.gmail - gmail
Config choices: Version 2.1

Block 15 - Log Reply to Sheet

Type / Role: n8n-nodes-base.googleSheets - googleSheets
Config choices: Version 4.5

Block 16 - Section - Intake

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 17 - Section - Classify

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 18 - Section - Route

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 19 - Warning

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 20 - Main Description

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Classify cold email replies and notify via Telegram with OpenAI and Instantly
Complexity	advanced
Nodes	20
Categories	AI Summarization
Author	Devon Toh
Published	21 Mar 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/14220/14220.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source AI Summarization workflows

Frequently asked questions

What does Classify cold email replies and notify via Telegram with OpenAI and Instantly do?

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your AI Summarization use case.

Devon Toh

8 workflows

Nodes

n8n-nodes-base.webhook n8n-nodes-base.respondtowebhook n8n-nodes-base.if n8n-nodes-base.set n8n-nodes-base.stopanderror @n8n/n8n-nodes-langchain.openai n8n-nodes-base.telegram n8n-nodes-base.gmail

Complexity

advanced

Published 21 Mar 2026

Likes 0

View on n8n.io Download Workflow

Install path: /data/workflows/14220/14220.json

Share Your Workflow

Have a useful automation to share? Publish it and help the community.

Submit Your Template How to Submit

Related Workflows

Build self-improving agent skills with cognee

## Quick overview A self-improving loop for agent skills, powered by the cognee Verified Node. When a skill's review scores below your threshold, it proposes a rewrite, and you approve the before/after diff before it's applied. No code required. ## How it works 1. Execute your workflow. 2. Set the demo inputs (skill name, dataset name, skill procedure markdown, review task text, and the score threshold). 3. Ingest the skill into cognee. 4. Cognee reviews the skill’s performance and returns a JSON with a score and gaps. 5. If the score is below the threshold, the workflow requests a cognee improvement proposal for the skill. 6. The workflow retrieves the full proposal from cognee and builds a human-readable before/after diff. 7. If the proposal is approved, the workflow applies the improvement in cognee, fetches the updated skill, and outputs the updated procedure and diff. ## Setup 1. Create a cognee API credential in n8n and use it in all cognee nodes (Ingest Skill, Review Skill, Propose Improvement, Get Proposal, Apply Improvement, Get Skill). Information for the credential (URL and API key) can be found in your Cognee Cloud account. 2. Update the skill parameters (skill_name, dataset_name, skill_markdown, task_text, score_threshold, and approved) to match your use case. 3. Ensure the referenced cognee dataset name exists so the skill can be stored and retrieved consistently.

View

Generate monthly BigQuery KPI PDF reports with Claude, Google Docs, Outlook and Teams

## Quick overview This workflow runs monthly to query KPI data from Google BigQuery, generates a narrative with Anthropic Claude, fills a Google Docs report template, exports it as a PDF, archives it to OneDrive, emails it via Microsoft Outlook, and posts a summary to Microsoft Teams. ## How it works 1. A schedule trigger fires on the 1st of every month at 07:00 and calculates the start and end dates of the previous full calendar month. 2. Four parallel BigQuery queries fetch revenue KPIs, top product categories, weekly sales trend, and top customers for that period. Each result set is tagged with a source label before merging. 3. All tagged rows are combined and aggregated into a single structured report payload containing KPI summaries, ranked tables, and company metadata. 4. The payload is split across two concurrent branches: one sends it to a Claude Sonnet LLM chain to generate an executive narrative with five sections (summary, revenue analysis, category insights, customer insights, and recommendation), and the other creates a named copy of a Google Docs template in your reports folder. 5. Once both branches complete, the narrative is merged into the report payload and the replacement requests for all template placeholders are constructed. 6. The Google Docs node applies all replacements in a single batchUpdate call, then the file is exported as a PDF via Google Drive. 7. The finished PDF is archived to OneDrive, emailed via Outlook with the report attached, and a formatted KPI summary card is posted to a Microsoft Teams channel. ## Setup 1. Set the following n8n environment variables before activating: GCP_PROJECT_ID, BQ_DATASET, GDOCS_TEMPLATE_FILE_ID, GDRIVE_REPORTS_FOLDER_ID, ONEDRIVE_REPORTS_FOLDER_ID, REPORT_RECIPIENTS, TEAMS_TEAM_ID, and TEAMS_CHANNEL_ID. 2. Connect a Google BigQuery credential and update the four SQL queries to match your dataset, table name, and column names. 3. Connect an Anthropic API credential to the Claude Chat Model sub-node, then manually wire its output to the ai_languageModel input (bottom connector) of the Create AI Narrative with Claude node on the canvas. 4. Connect Google Drive and Google Docs OAuth2 credentials. In Google Drive, create a master report template Doc containing the placeholder strings listed in the Customization section, note its file ID from the URL, and set GDOCS_TEMPLATE_FILE_ID accordingly. 5. Connect Microsoft OneDrive, Outlook, and Teams OAuth2 credentials. Retrieve your Teams team ID and channel ID using the Microsoft Graph Explorer and set the corresponding environment variables. ## Requirements - Google Cloud project with BigQuery enabled and an orders table matching the SQL schema in the workflow - Google Workspace account (Drive and Docs OAuth2 access) - Anthropic API key - Microsoft 365 account with OneDrive, Outlook, and Teams access ## Customization - To change the reporting cadence, update the cron expression in the schedule trigger: 0 7 * * 1 for weekly or 0 7 * * * for daily. - To adapt the SQL queries to your schema, replace orders, order_total, customer_id, is_new_customer, created_at, and product_category with your actual column names. - To change the AI model, update the model field in the Claude Chat Model sub-node. - To add more KPI sections, extend the SQL queries, the aggregation code in Consolidate BigQuery Data, and the replacements array in Construct Replacement Requests.

View

Monitor multi-city courier weather risk with Open-Meteo, GPT-4o, Gemini and Slack

## Quick overview This workflow checks 48-hour forecasts from Open-Meteo for multiple cities on a 6-hour schedule or via an on-demand n8n form, scores conditions against courier-impact thresholds, uses OpenAI (with Google Gemini fallback) to draft Slack-ready alerts, and posts operational updates to a Slack channel. ## How it works 1. Runs every 6 hours on a schedule or starts from an Operations Manager on-demand n8n form submission. 2. Builds a city configuration (all cities for scheduled runs, or a single selected city for on-demand runs) and constructs the Open-Meteo forecast API request. 3. Fetches a 48-hour hourly forecast from Open-Meteo and continues even if the request fails. 4. Scores each city’s forecast against rain, wind, snow, and heat thresholds across multiple time windows, applies 18-hour deduplication for scheduled runs, and flags any city feed failures. 5. Sends the alert candidates to OpenAI to generate a three-sentence, operations-focused message per city (using Google Gemini as the model fallback if configured). 6. Formats each alert as a Slack Block Kit message and posts it to the #ops-weather-alerts channel, and separately posts a Slack error notice if one or more city forecasts could not be fetched. ## Setup 1. Add an OpenAI API credential (used to write the Slack alert messages). 2. Add a Google Gemini (PaLM) API credential if you want the configured fallback model to be available. 3. Add a Slack OAuth2 credential and set or create the target channel (ops-weather-alerts / #ops-weather-alerts) in your Slack workspace. 4. For on-demand checks, share the n8n form URL with your team and update the city dropdown options and the city configuration code if you add or rename cities. 5. Review and adjust the per-city weather thresholds in the city configuration to match your courier operations risk tolerance. ## Requirements - OpenAI API key (GPT-4o / gpt-4o-mini) - Slack OAuth2 credential with chat:write scope - Google Gemini API key (optional, for AI fallback) ## Customization - Add or remove cities by editing the CITIES array in the City config node, no other nodes need to change. - Adjust URGENT/HEADS_UP score thresholds in the Score + dedup node to raise or lower sensitivity per city. - Change the delivery peak windows (default 11:00-14:00 and 17:00-22:00) in the same node to match your market hours. - Swap the Slack channel name in both Slack nodes to route alerts to a different channel. ## Additional info This workflow was built and tested on a self-hosted n8n instance (Oracle Cloud A1 Flex, Ubuntu 24.04) and is fully compatible with n8n Cloud. Weather data is sourced exclusively from Open-Meteo (open-meteo.com), an open-source weather API requiring no authentication. Forecast accuracy follows Open-Meteo's standard model ensemble — verify critical alerts against local meteorological services before operational decisions. Deduplication uses n8n workflow static data (global scope). Clearing static data manually or migrating the workflow to a new instance will reset the deduplication state, causing the next scheduled run to re-evaluate all cities as if no prior alerts have been sent. The GPT-4o prompt includes city-relative climate context so the model understands that an alert in Nairobi means sustained flooding rain, while an alert in Helsinki means genuinely exceptional conditions beyond the Nordic baseline. This prevents generic alert copy across climatically different markets. The form trigger is designed for Operations Managers with no technical background — no n8n access required. Share the webhook URL directly and they can force an immediate check from any browser. Peak delivery windows (11:00-14:00 and 17:00-22:00 local time) are used to escalate severity scoring during high-order-volume periods. Adjust these in the Score + dedup node to match your market's actual peak hours.

View

Need Custom Automation?

Get help designing a custom n8n workflow that connects your stack and fits your process.

Classify cold email replies and notify via Telegram with OpenAI and Instantly

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

Classify Cold Email Replies and Notify via Telegram with OpenAI and Instantly

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Instantly Reply Webhook

Block 2 - Respond 200 OK

Block 3 - Validate Payload

Block 4 - Extract Lead Fields

Block 5 - Stop - Invalid Payload

Block 6 - Classify Reply - OpenAI

Block 7 - Parse Classification

Block 8 - Is HOT?

Block 9 - Is WARM?

Block 10 - Telegram - HOT Lead

Block 11 - Telegram - WARM Lead

Block 12 - Telegram - COLD Lead

Block 13 - Auto-Ack HOT Gmail

Block 14 - Auto-Ack WARM Gmail

Block 15 - Log Reply to Sheet

Block 16 - Section - Intake

Block 17 - Section - Classify

Block 18 - Section - Route

Block 19 - Warning

Block 20 - Main Description

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions