Open-source outreach software for cold emailing
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Updated
Aug 28, 2026 - TypeScript
Open-source outreach software for cold emailing
Cold email automation tool that extracts job listings and generates personalized emails with relevant portfolio links.
Open Source Cold Email That Actually Works Stop paying enterprise prices for cold email. Coldflow makes cold outbound functional, transparent, and accessible for everyone.
AI reply bot for cold-email agencies on EmailBison: drafts replies with an LLM, a human approves in Slack (Send / Edit / Skip). Per-client instances, one Slack app, guided setup by Claude Code.
MailWizz delivery server extension for Sendmux — route emails through multiple SMTP providers (Gmail, Outlook, custom SMTP) with smart rate limiting, automatic failover, and bounce/complaint webhook handling.
Self-hosted SMTP engine with intelligent throttling (FastAPI/Docker).
Autonomous lead discovery & cold outreach agent for software engineers. Discovers YC & VC-backed startups, researches technical pain points, drafts personalized cold emails using Gemini Flash, and streams interactive review cards to Telegram. 100% serverless via GitHub Actions & Supabase.
ColdJob – Automate cold emails, bulk outreach, resume management, auto follow-ups, and secure Google OAuth 2.0.
Autonomous AI cold email agent. Uploads leads → AI writes personalized outreach → sends daily via Resend → reads replies hourly via IMAP → auto-responds with AI → tracks everything. Runs 24/7 on your own machine. Node.js + Express + OpenRouter + SQLite.
A 100% free, self-hosted bulk email verification pipeline using n8n and Reacher. Stop paying for NeverBounce and Hunter.io
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