Cold email gets a bad rap, but the data says otherwise: campaigns with a researched, specific subject line consistently beat generic ones by 5-10x on open rate.
Why most subject lines fail
The average B2B inbox is flooded. Your subject line has about 2 seconds to answer one question: "Is this worth my time?"
Generic lines like "Quick question" or "Following up" lose. They don't tell the reader why this email is different.
What actually works
1. Reference something specific about them
"Loved your take on [their post/talk/product]"
2. Ask about their business, not your product
"Question about your pricing page"
3. Name the outcome they care about
"Cutting your outreach reply rate from 2% to 5%"
Specific beats clever. Personal beats punchy. Every time.
A quick test
Write your next subject line and check it against three filters:
- Does it mention them, not you?
- Would they open it if a stranger sent it?
- Is it under 50 characters?
If you answer no to any of these, rewrite it.
I build ColdCrow - an AI cold email writer for B2B teams. Describe a prospect, get a personalized email with a deliverability score in seconds. Free to try: https://copywise.vercel.app/try
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