ColdMerge helps founders, freelancers and small teams send personalized outreach and follow-up sequences through their own Gmail or Google Workspace accounts. Import a contact list, preview messages, set sending windows and mailbox budgets, and handle replies in Gmail. Remaining follow-ups stop when ColdMerge detects a reply or bounce. ColdMerge is currently in a private, invite-only beta. Request an invite on the website; a Gmail or Google Workspace account is required.