Cold Email Tool
Test your cold email subject lines with AI and discover what actually gets opens and replies.
Built for B2B outbound, SaaS, agencies, and lead generation campaigns.
AI Analysis
Subject Line Analyzer
Paste your subject line and we'll score it, predict open rates, flag spam risks, and generate stronger alternatives.
Please enter a subject line to analyze.
Helps the AI tailor its analysis to your specific buyer.
Analyzing psychology…
Subject Line Score
Open Rate Prediction
—Spam Risk
—What Works
What Hurts Performance
3 Stronger Alternatives
Strategic Insight
How It Works
Our AI behaves like a senior cold email strategist — not a generic scorer. It evaluates psychology, deliverability, and B2B relevance together.
Input Your Subject Line
Enter your subject line along with your industry, target audience, and desired tone. The more context you give, the sharper the analysis.
AI Runs Multi-Factor Analysis
The AI evaluates curiosity, clarity, personalization signals, spam triggers, emotional pull, and B2B relevance — then scores each dimension.
Get Actionable Results
Receive a score, open rate prediction, spam risk assessment, specific improvements, and 3 stronger subject line alternatives — ready to use.
Cutbound Outbound
Cutbound helps B2B businesses build outbound systems that generate consistent conversations and pipeline growth — from subject lines to booked meetings.