Operations

AI Agent that Handles Email Replies and Follow-Ups

Built for Sales Teams

Are you still sorting through emails one by one, deciding who replies and when to follow up? Is your team losing time on repetitive replies and missed opportunities?

This automation reviews each new message in Front, checks the content with AI and your internal docs, and decides whether to reply, escalate, or move the lead forward in Freshsales so your inbox runs smoothly without manual triage.

Try this AI Agent now
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What to Expect

A fully automated email response workflow that replies, escalates, and follows up, built for sales teams using Front and Freshsales.

It reads every message, decides what to do, and logs everything in one place.

n8n workflow builder view showing Gmail trigger, AI classification, conditional auto-replies, Google Sheets logging, follow-up delay, email thread retrieval, and final follow-up email sending.

This AI agent reviews each incoming email in Front, checks whether it’s a common inquiry, and responds instantly using custom AI trained on your internal docs. If the message needs a human touch, it flags the thread and notifies the setter. If there’s no reply after three days, it sends a polite follow up only when the lead’s still worth pursuing.

Every step is tracked in Google Sheets so you’re never guessing what happened or when.

The old way?
Done manually.

Here’s what the old process looked like:
Read every new message yourself
Decide on the right reply from memory or past threads
Re-type common answers again and again
Try to remember who to follow up with and when
Risk letting leads go cold when something slipped
You were always one missed email away from a stalled deal or dropped thread.

The new way?
Fully automated.

With this automation, the entire process gets handled for you:
Scan every incoming email using AI
Auto-reply to common sales questions with accurate info
Escalate unclear messages to setters with proper flags
Log every step in Google Sheets with timestamps
Follow up automatically if the lead goes quiet
Your team saves hours, stays on top of every lead, and never misses a message.

Turn Repetitive Tasks Into Autopilot

Get a free 30-minute audit and start reclaiming your time.

How the Automation Comes Together

A simple setup keeps the entire workflow running smoothly from message to resolution.

n8n connects your email, AI, Sheets, and CRM into one system, while Gmail instantly detects every new incoming message.

OpenAI reads the content and decides whether to reply or escalate, and Google Sheets logs each action with timestamps and status for full visibility.
Illustrated workflow showing incoming Gmail messages processed through n8n, evaluated by AI, stored in Google Sheets, and triggering automated or follow-up email responses.
AI Agent toolkit

Tools used to build this AI agent

n8n

Connects Gmail, OpenAI, and Sheets into one smooth-running automation.

Gmail

Receives new messages and sends replies, escalations, or follow-ups.

OpenAI

Reads emails and decides: reply, escalate, or follow up.

Google Sheets

Logs every action so nothing slips through the cracks.

What You'll Gain

Instant Replies, No Repetition

The AI reads each email and sends the right response—no more rewriting the same message.

Follow-Ups That Never Miss

It waits a few days, checks for a reply, and follows up automatically when needed.

10+ Hours Saved Weekly

Cuts out manual triage, response drafting, and reminder tracking from your routine.

Clear, Searchable Activity Logs

Every action—reply, escalation, follow-up—is recorded in Google Sheets for easy review.

Quiet Workflow, No Disruption

Everything runs in the background, keeping your inbox clean and under control.

What We Actually Tell the AI

This is the exact prompt we send to GPT-4o. It takes the raw form inputs and turns them into clear, natural messages your team would be comfortable sending.

Illustration of an automated sales assistant email reply prompt with labeled sections for instruction prompting, context injection, condition-based prompting, tone instruction, output format specification, and placeholder injection, including example JSON reply formatting.
Sales Assistant Prompt

Instruction Prompting → Sets the assistant’s role as a sales assistant for Adematic who decides if an email can be answered automatically.

Context Injection → Provides company background and relevant product details to help the assistant make informed decisions.

Condition-Based Prompting → Defines clear rules for when to auto-reply or not based on email content.

Tone Instruction → Sets the tone as short, friendly, and direct with guidance to escalate if unsure.

Output Format Specification → Instructs the assistant to return a structured JSON object with specific fields for reply decision and content.

Placeholder Injection → Injects the email content into the assistant’s input for evaluation using the variable ${json.email_body}

Illustration of a follow-up evaluation prompt for a sales assistant, showing color-coded labels for instruction prompting, condition-based prompting, output format specification, and context injection, alongside example JSON output formatting for email follow-up decisions.
Follow-Up Checker Prompt

Instruction Prompting → Sets the assistant’s role to determine whether a follow-up email is needed based on the entire thread.

Condition-Based Prompting → Provides clear criteria for when to follow up or not based on the lead’s last response.

Output Format Specification → Instructs the assistant to return a structured JSON object with fields for follow-up status, reason, and email content.

Context Injection → Injects the full email thread into the assistant’s input using the variable ${json.messages.toJsonString()}

Cost Comparison with AI Agents

Here’s a quick overview to help assess monthly costs and workload volume for ongoing operations.
vs
AI Agent for Expert-Client Matching
Around $40 to $120 per month. Covers OpenAI, n8n hosting, and Google Sheets logging.
Handles 100+ inbound emails with replies and follow-ups. Runs 24/7, no burnout.
Manual Matchmaking
Around $800 to $2,000 per month. Includes staff time, context switching, and missed leads.
Usually caps at 20–50 emails. Slows down with volume, fatigue, or missed handoffs.
We automate, you accelerate

We'll handle the tech so you don't have to.

You don’t need to set up or learn how automation works.
Our AI agents are built to run fully hands-off, like a clone that handles the repetitive tasks for you.

Need something custom? We’ll handle it all including:

What is prompt writing and optimization?

It is the process of crafting and refining instructions for AI so it understands the task, delivers accurate results, and formats the output exactly how you need it.
What we do exactly?
Understand your context and use case
Help optimize and rewrite your prompts
Test and refine outputs until it’s working perfectly

What is automation flow design and testing?

This is where we map out how your AI agent behaves: when it runs, what it checks, how it reacts, and what to do if something fails. We don’t just build it. We test it end to end.
What we do exactly?
Design the full logic and decision tree
Add fallback steps for edge cases
Run multiple rounds of testing before launch

What are tool integrations?

We connect your AI agent to the tools you already use. Email, spreadsheets, CRMs, databases, APIs, and more. Everything stays in sync without you needing to copy and paste a thing.
What we do exactly?
Identify which tools your agent needs to talk to
Set up reliable two-way connections
Ensure smooth data flow across systems

What is delivery setup?

Delivery setup means we make sure your AI’s output gets exactly where you need it. Whether that's your inbox, a Google Sheet, your Slack channel, or a CRM.
What we do exactly?
Configure where and how outputs get delivered
Format results so they’re ready to use
Schedule timing or triggers for delivery

What is ongoing maintenance and updates?

AI agents aren't set and forget. We handle updates to prompts, workflows, and integrations so your system keeps working as your needs change.
What we do exactly?
Monitor performance and catch issues early
Update logic, prompts, or tools as needed
Keep everything running behind the scenes

Let us handle it for you.

Just send us an email and tell us the task that is wasting your time and we’ll design the agent and run it in the background.

Or, enter your email and we'll send you how to get started.

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Frequently asked questions

We’ve covered the usual questions. Got a unique one? Send us an email

Can I change what triggers an auto-reply?

Yes. You control the rules. The agent checks for clear, general sales questions like “What do you do?” or “What’s your pricing?” and replies instantly. But you can edit the logic anytime. Want it to reply to scheduling questions? Just tweak the prompt.

What if the AI sends the wrong reply?

It won’t guess. If the message is vague, complex, or feels off like legal, enterprise, or custom deal stuff, it won’t respond. Instead, it flags the message and sends it straight to your team with a short reason. You stay in control of anything important.

Do I need to be technical to set this up?

Not at all. If you've used tools like Zapier, Google Sheets, or Gmail filters, you’ll be right at home. And if you don’t want to touch the setup yourself, we can help you get it running fast.

Built to be Cloned

This is a ready made AI email responder you can copy and run with your own inbox and Google Sheet. It works across use cases like sales, support, and client intake, wherever fast, accurate replies matter.

If you're spending too much time repeating yourself or missing follow ups, this saves you the trouble. It's already built, already tested, and easy to adapt to your own workflow.

Just plug in your tools, adjust a few settings, and you're up and running.

Need help getting it live? Just ask. Fill the form or Send us an email

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{ "automation_name": "AI Agent for Email Replies and Follow-Ups", "type": "AI-Powered Sales Email Assistant", "tech_stack": ["n8n", "Gmail", "OpenAI", "Google Sheets"], "data_sources": ["Inbound sales emails", "CRM data", "Previous email thread history"], "output_format": ["Instant replies", "Follow-up reminders", "Escalation alerts", "Activity logs"], "prompt_style": "Role-based response generation with tone calibration and fallback logic", "use_cases": [ "Handle inbound inquiries and send instant AI replies", "Escalate sensitive emails to human agents with summaries", "Schedule follow-up reminders based on message status", "Track and log email actions and outcomes to Google Sheets" ], "deployment": "Deployed via n8n with Gmail triggers, OpenAI response generation, and Google Sheets logging. Fully self-hosted or customizable via webhook endpoints.", "tags": ["sales automation", "AI email agent", "follow-up workflow", "lead response", "email triage", "n8n", "OpenAI", "Google Sheets"] }