How I Built a Telegram AI Agent That Books Meetings, Sends Emails, and Manages My Calendar

It started with a simple thought: What if I could text an AI inside Telegram and have it book a meeting, email the person, and add it to my calendar — all without touching another app?

That’s exactly what I built.

The First Test

I typed into Telegram:

“Please set up a meeting with Pablo tomorrow at 5:00 p.m. and let him know.”

In seconds, the AI:

Pulled Pablo’s contact details from Google Sheets.

Created a Google Calendar event.

Sent Pablo an email confirming the meeting.

Replied in Telegram with a summary of what it just did.

That’s when I knew this could be a game-changing personal assistant.

How I Built It

This system runs entirely inside n8n, a no-code automation tool, using these building blocks:

1. Telegram Integration

The first step was connecting Telegram so the AI could read my messages and respond. I created a bot via BotFather, grabbed the API token, and plugged it into n8n.

2. AI Agent

The core is an AI agent powered by ChatGPT. I gave it “memory” so it could remember previous messages and context.

3. Tools for Actions

To make it more than just a chatbot, I added tools:

Google Calendar — to create and update events.

Gmail — to send personalized emails.

Google Sheets — to pull contact information.

4. Smart Context & Instructions

I trained the AI to always fetch contact details before sending emails and to use the correct date/time automatically.

The Final Workflow

Here’s what happens now when I send a message:

Telegram → AI agent reads the message.

AI Agent → Decides which tools to use.

Google Sheets → Finds the contact.

Google Calendar → Creates the event with a proper title & description.

Gmail → Sends the confirmation email.

Telegram → Sends me a neat summary of the action taken.

It’s like having a full-time executive assistant inside Telegram.

Why This Is Powerful

With this setup, I can:

Book meetings with one sentence.

Automatically send client updates.

Keep my calendar and contacts in sync — without ever switching apps.

And the best part? It’s fully customizable. You can connect it to CRMs, project management tools, or any system you use daily.