I'll be honest: when I launched my email prospecting campaign, I was only half-convinced it would work. Cold email has a reputation for being an "old school" technique, almost outdated in an era of targeted ads, programmatic SEO, and social selling. Spoiler: I was wrong.
Context: I built a tightly targeted email list focused on one specific profession that matches my tool's use case perfectly. No mass scraping, no purchased database, I took the time to identify the right profiles. That's probably the single biggest factor behind the results below.
The raw numbers
- Open rate: 39% (industry average is around 20-25%)
- Click-through rate to landing page: ~7% of recipients
- Conversion to free trial: ~0.5% of total emails sent
In other words, for every 1,000 emails sent, I get about 100 qualified visitors and 5 free trials. It sounds small, but in B2B with decent LTV, the ROI is absolutely there.
My approach: test before you blast
I didn't send 10,000 emails at once and pray. I worked in A/B testing batches of 1,000 addresses:
First batch: test 2 different subject lines to identify the best open rate.
Second batch: keep the winning subject line, test 2 different email bodies to compare click-through rates.
Third batch: refine further (CTA, length, angle).
Once the winning formula is locked in → scale up the sending.
In parallel, I iterated on the landing page to optimize the free trial conversion rate (headline, structure, form, social proof).
The key: solid tracking
This is the part I really want to emphasize. Without proper tracking, you're flying blind. You don't know if your new subject line actually converts better, if a landing page variant truly performs, or if the channel is profitable at all. I set up full tracking from day one: opens, clicks, LP visits, conversions. That's what let me make decisions based on real data instead of gut feeling.
What I take away from it
Cold email isn't dead, it's just done badly by 90% of people. Most of the cold emails I personally receive are generic, poorly targeted, and reek of automation. If you put in the effort to personalize properly (I took real time to personalize each email, not fake {{firstname}} merge tags), you stand out instantly.
Targeting > volume. A list of 500 prospects who genuinely match your ICP beats 5,000 emails sent blindly.
The subject line drives most of your open rate. That's where you A/B test first.
The landing page must match the email's promise exactly. End-to-end consistency = conversion follows.
What I did NOT do
- No purchased databases
- No 7-step follow-up sequences that end up annoying the prospect
- No copy-pasted templates from growth blogs
- No mass sending without validating the formula upfront
Conclusion
If you're launching a B2B product and hesitating to try cold email because it feels outdated: test it. But test it intelligently, small batches, rigorous A/B testing, proper tracking, LP iteration. It's one of the cheapest and most predictable acquisition channels once you find your formula.