DoubleTick CLI
Open-source CLI and MCP server for email read tracking via Gmail. Know when your emails are opened — from the terminal.
Works with the DoubleTick backend. Tracks from the CLI show up alongside tracks from the Chrome extension.
Install
npm install -g doubletick-cliQuick Start
# 1. Log in with your Gmail account (one-time)
doubletick login
# 2. Send a tracked email
doubletick send --to jane@company.com --subject "Q1 Planning" --body "Hi Jane, here are the numbers..."
# 3. Check if they read it
doubletick status --lastCommands
doubletick login
Authenticate with Gmail and DoubleTick. Opens your browser for Google sign-in. One-time setup — credentials are stored locally in ~/.doubletick/credentials.json.
doubletick logout
Remove stored credentials.
doubletick send
Send a tracked email. Injects a read-tracking pixel, sends via Gmail API, and registers the track.
# Send a tracked email (body is markdown by default)
doubletick send --to jane@co.com --subject "Hi" --body "Hello **Jane**"
# HTML body instead of markdown
doubletick send --to jane@co.com --subject "Hi" --body "<h1>Hello</h1>" --html
# Body from file
doubletick send --to jane@co.com --subject "Hi" --body-file ./email.md
# With CC/BCC
doubletick send --to jane@co.com --cc "bob@co.com" --subject "Hi" --body "Hello"
