Stop paying enterprise prices for cold email. Coldflow makes cold outbound functional, transparent, and accessible for everyone.
Built for transparency and control. No black boxes, no vendor lock-in.
Automated infrastructure provisioning and domain warming. Get your sending domains configured correctly from day one with proper SPF, DKIM, and DMARC records.
Build targeted prospect lists with advanced filtering and segmentation. Import from multiple sources or use built-in discovery tools to find your ideal customers.
Enrich your contacts with verified email addresses, phone numbers, company data, and social profiles. Integrate with leading data providers or use your own sources.
Automated prospect research that finds relevant talking points, company news, and personalization opportunities at scale. Know your prospects before you reach out.
AI-driven personalization that writes unique, contextual emails for each prospect. Go beyond simple merge tags with genuine personalization that converts.
Create sophisticated multi-touch campaigns with conditional logic, A/B testing, and automatic follow-ups. Control every aspect of your outreach strategy.
Functional. Every feature you need to run successful cold email campaigns, from infrastructure to inbox.
Transparent. Full visibility into your data, deliverability, and performance. No black boxes or hidden algorithms.
Accessible. Open source and self-hostable. Own your infrastructure, control your costs, customize everything.
Coldflow is built with modern technologies and designed to be extended. Use our REST API, webhooks, and plugin system to integrate with your existing tools or build custom workflows.
We believe cold email software shouldn't be a black box. Coldflow is completely open source, giving you full control over your outreach infrastructure and the freedom to customize everything.
Join developers and sales teams who are taking control of their cold email infrastructure. Get started in minutes with our Docker deployment or sign up for our managed service.