Generate cold email icebreakers and subject lines with Google Sheets and OpenAI

Email List Personalization - Icebreaker & Subject Line Generator

Reads an enriched lead list from Google Sheets, generates a personalized icebreaker + subject line for each lead using OpenAI, and writes results back to the same sheet -- ready for your email sequencer.

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Who is this for?

SDRs, founders, and agency owners running cold outbound who want personalized first lines without spending 2-3 minutes per lead on manual research. Sits between your Apollo / Sales Nav export and Instantly / Smartlead / Lemlist.

What problem does this solve?

Generic cold emails get ignored. Writing unique icebreakers for 200+ leads/day is not realistic by hand. This workflow does it at ~$0.002/lead with GPT-4.1-mini -- spartan, human-sounding copy that references real prospect details.

How it works