How ColdEngine works
ColdEngine runs the whole outbound loop: the sending engine, sequences, deliverability controls and an AI inbox. Here is exactly what happens, step by step.
Step 1
Add any Gmail, Outlook or IMAP mailbox with an app password in about two minutes. No OAuth app to register, no per-seat reseller fee. Connect as many as you need and ColdEngine rotates sends across them.
Step 2
Import a CSV with automatic column mapping, add contacts by hand, or push them in over the API. Leads are scored by decision-maker fit so you know who to contact first.
Step 3
Build a multi-step sequence with the delay between each step. Test A/B/Z subject lines, add conditional follow-ups that only send if a lead did not open or reply, and vary phrasing with spintax. Stuck? Let the AI writer draft a first version.
Step 4
Choose a send window, sending days and timezone, then a randomised delay between emails and a daily cap per mailbox. These are the settings that keep you in the primary inbox instead of spam.
Step 5
Hit launch and the engine takes over. It sends on a human-like cadence inside your window, pauses a lead the moment they reply, and detects bounces before they hurt your domain.
Step 6
Every response across every mailbox lands in one inbox, auto-sorted by intent and sentiment. Interested leads become opportunities in the CRM, and webhooks can push each reply straight into your own stack.
Included on every plan
From the moment you connect a mailbox, ColdEngine warms it on its own schedule and tracks real placement with an honest health score. No second tool, no separate bill, no shared-pool gimmicks. You build reputation on inboxes you own.
Connect an inbox and you can have your first campaign live within the hour.
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