Auto-reply to important emails with AI while avoiding duplicates

Reads new Gmail messages and sends an AI-written reply, but only when one hasn't already gone out.

How the work actually flows

It branches. Exactly one path is taken.

Pattern: Exclusive Choice (4)

flowchart TD trig>"new email arrives"]:::trig s0["filter out newsletters and promos"]:::task s1[("check sheet reply history")]:::store s2["check sent folder for reply"]:::svc s3["send ai reply"]:::task trig --> s0 s0 --> s1 s1 --> s2 gx{"× was a reply already sent"}:::gate s2 --> gx p00["skip sending"]:::task gx -->|"reply already sent"| p00 p10["send ai reply"]:::task gx -->|"no reply found"| p10 p00 --> s3 p10 --> s3 out[/"reply sent exactly once"/]:::out pay{{"no duplicate or missed replies"}}:::pay s3 --> out out --> pay classDef task fill:#e7f6fe,stroke:#34b8f0,color:#2c2a29 classDef svc fill:#f6f8fa,stroke:#7c8795,color:#2c2a29 classDef mi fill:#e7f6fe,stroke:#0079a8,color:#2c2a29,stroke-width:2px classDef human fill:#fff,stroke:#0079a8,color:#0079a8 classDef store fill:#f6f8fa,stroke:#0079a8,color:#2c2a29 classDef trig fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigtime fill:#00a4eb,stroke:#0079a8,color:#fff,font-weight:bold classDef trigdata fill:#8ad4f5,stroke:#0079a8,color:#06314c,font-weight:bold classDef gate fill:#fff,stroke:#e8a23d,color:#6b4708,font-weight:bold classDef out fill:#1f9d6b,stroke:#167a53,color:#fff,font-weight:bold classDef pay fill:#06314c,stroke:#021f33,color:#fff
Starts itA stepAn outside serviceA record or sheetOne path onlyResultPayoff
Build size
Advanced

A larger build with multiple systems, AI reasoning, and custom rules.

Business functions
Email AutomationSpreadsheet & Database Ops
Connects
GmailGoogle SheetsOpenAI

The problem it solves

Important emails sit in your inbox while you're busy, and by the time you get to them a customer has already followed up twice. It's easy to accidentally reply to the same message more than once or answer something you already handled.

Who it fits

Freelancers and small teams who want reliable AI email replies without duplicate or unwanted responses.

How it works

  1. A new Gmail message arrives
  2. Newsletters, promotions, and no-reply senders are filtered out
  3. The sender's address is checked against a Google Sheets reply history
  4. Gmail's sent folder is checked to confirm no recent reply exists
  5. An AI-written reply is sent only if none of those checks find a duplicate
What you get

Emails answered without duplicate replies

You get AI-written replies sent automatically to important emails, while duplicate checks make sure no contact ever gets two responses.

What you get

An AI-written email reply sent to the customer, with the history logged to prevent duplicates.

What you need

A Gmail account, a Google Sheets account, and an OpenAI API key.

We can build this. But should you?

The hard question is not how to build it. It is whether this is the right thing to build first.

That is what a Fractional Chief AI Officer figures out with you, before anyone writes a line of code.

Let's Talk Strategy

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