Automatic reminders for follow-ups with AI and human in the loop Gmail
Needs changesNeeds changes. This template uses 1 thing(s) that n8n 3.0 removes: AI Agent v1 (old agent modes). 1 breaking item(s) found. Static check, last run 2026-10-19.
What this workflow does
This AI workflow has 16 nodes and runs on a schedule (every day at 06:00). Along the way it connects Google Calendar, Gmail and OpenAI Chat Model.
How it runs
Trigger: On a schedule (every day at 06:00).
- Get Past Events (Google Calendar): get many
- Mark as Seen (Remove Duplicates): removes duplicate items
- Loop Over Items (Loop Over Items (Split in Batches)): loops over the items in batches
- Only Follow Ups (Filter): keeps only the items that match a condition
- Get Emails Since (Gmail): work with thread
- Meeting Availability Agent (AI Agent): runs an AI agent, with model: Model; 1 tool (Availability); output parser: Output
- Flag to Follow Up (Edit Fields (Set)): sets or maps fields
- Generate Message (Edit Fields (Set)): sets 1 field: message
- Send for Human Approval (Gmail): send and wait for a reply
- Meeting Booking Agent (AI Agent): runs an AI agent, with model: Model; 1 tool (Meetings)
Services it uses
Before you upgrade to n8n 3.0
1 thing in this workflow is removed in n8n 3.0. Fix it before you upgrade:
- AI Agent v1 (old agent modes) in Meeting Availability Agent (v1.7), Meeting Booking Agent (v1.7): replace with Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent.
Rather not rewrite it? Many of these flows can be rebuilt in Make (free plan).
| Removed in 3.0 | Replace with |
|---|---|
| AI Agent v1 (old agent modes) Meeting Availability Agent (v1.7), Meeting Booking Agent (v1.7) | Latest AI Agent node (Tools Agent). For SQL Agent, use a Postgres or MySQL tool with a recent AI Agent. |
Nodes used (11)
- Schedule Trigger
n8n-nodes-base.scheduleTrigger - Google Calendar
n8n-nodes-base.googleCalendar - Loop Over Items (Split in Batches)
n8n-nodes-base.splitInBatches - Edit Fields (Set)
n8n-nodes-base.set - Filter
n8n-nodes-base.filter - Gmail
n8n-nodes-base.gmail - Structured Output Parser
@n8n/n8n-nodes-langchain.outputParserStructured - Google Calendar Tool
n8n-nodes-base.googleCalendarTool - OpenAI Chat Model
@n8n/n8n-nodes-langchain.lmChatOpenAi - AI Agent
@n8n/n8n-nodes-langchain.agent - Remove Duplicates
n8n-nodes-base.removeDuplicates
From the author
This n8n template extends the idea of follow-up reminders by having an AI agent suggest and book the next call or message to re-engage prospects which have been ignored. What makes this template particularly interesting and actually usable is that it uses the…