Back to Free B2B Tools
B2B Tool
Cold Email Subject Line Analyzer
Your subject decides whether the email is ever read. Score it for spam words, length, mobile truncation, and curiosity — and get the exact fixes before you hit send. Runs 100% in your browser.
Your Subject Line
Best cold subjects: under 7 words, curiosity-driven, plain text, no emojis. For follow-ups, reply in the same thread with "Re:".
Type your subject line and hit Analyze. You'll see how it truncates on mobile, its spam-word load, and what to change before you hit send.