ColdFlow

About

Run cold email campaigns without leaving Gmail. Build multi-step sequences, import leads from CSV, check your messages against 80+ spam triggers, and A/B test subject lines. Full deliverability scoring and send time optimization included.

Features

• Gmail-native toolbar
• Multi-step sequences with conditional logic
• CSV contact import
• Spam score checker (80+ triggers)
• A/B testing and deliverability scoring

Try It Live

Interactive demo — test the core features right here.

Privacy

ColdFlow processes everything locally in your browser. No files or documents are ever uploaded to our servers. We do not track your browsing, collect analytics on page views, or share data with third parties. Read the full privacy policy.