04/24/2025
What happens when you change just one line in your outreach?
Spoiler: everything.
🟣We conducted A/B tests with two topics in a cold email campaign:
- Version A: Quick question about your team’s expansion
- Version B: [First Name], saw something relevant to your role
The results were found to be close to the following figures:
- Version A: 27% open rate
- Version B: 42% open rate
Same list. Same offer. Same timing.
The only difference: contextual personalization vs generic curiosity.
It tells us the following:
🟪Relevance beats intrigue — especially in B2B
🟪Using job-role language in the subject line helps filter the right eyes
🟪Personalization isn’t just a name tag — it’s about signal
Sometimes, the smallest tweaks have the biggest impact.
Curious what subject lines are working for others in 2025 — share your best-performing ones below.
https://dmtcorp.io/