Mailgo Campaign Suite

One skill, complete cold email pipeline. From recipient verification to campaign reporting — everything runs through bundled scripts with zero third-party dependencies.

Step 0 — Authentication Setup

Required: MAILGO_API_KEY environment variable must be set before any other step.

Quick check

# Confirm the variable is set (shows first 5 characters only)
echo "${MAILGO_API_KEY:0:5}"

If output is non-empty → proceed to Step 1. If empty → follow the setup flow below.