Strategy Guide · Lead Generation Consulting℠
Cold Email Subject Lines
Your subject line decides whether your cold email gets opened at all. This guide covers what makes a subject line work in B2B — and what gets you deleted.
What makes a subject line work
Short, specific, and relevant beats clever. A subject that reads like a normal note from a colleague gets opened.
Curiosity helps, but only if the email delivers on it.
What to avoid
Clickbait, all caps, spammy punctuation, and fake reply threads erode trust and deliverability. Don't trick your way into the open.
Test and learn
Subject lines are easy to test. Try a few angles, measure open rate, and keep what works for your audience.
Key takeaways
- Short, specific, relevant beats clever
- Write like a human, not a marketer
- Avoid clickbait and fake threads
- Test subject lines and keep winners
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FAQ
Common questions.
How long should a cold email subject line be?
Short — a few words that read naturally. Long, salesy subject lines get ignored.
Should I use the prospect's name in the subject?
It can help, but relevance to them matters far more than a merge tag.