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CASE FILE · CHROME EXTENSION · OUTREACH · 2026

Gmail List Mailer

a glass panel that floats right into your gmail tab, point it at a csv of leads and it drives your own compose window like a ghost — fills it in, hits send, waits for gmail to actually confirm before moving on. no api keys, no oauth, no smtp. just your account doing what it always does, faster.

Gmail List Mailer 1◉ FRAME 01
001 — THE FILE

A Chrome extension (Manifest V3) that sends a templated email to a list of contacts straight from a CSV, by driving Gmail's own compose window — no API keys, OAuth, or SMTP involved, mail goes out from whichever account the tab is signed into. The UI is a draggable, resizable glass panel injected straight into the Gmail tab (shadow-DOM isolated, so Gmail's own styles can't touch it), showing live per-contact status as it works through the list. A content script fills in the recipient, subject, and body from a {{column}} template, clicks Send, and only advances once Gmail actually confirms the send went through — a run can even keep going at full speed in a background tab. Ships with a review mode (fills the draft and stops, you hit send) and an auto-send mode, plus a resumable queue so a closed tab doesn't lose your place.

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