We scale your newsletter with subscribers who buy.
Email is still the most cost-effective marketing channel – but only if you get the right people to subscribe. We run paid ads that fill your newsletter with buyers, at scale.
Trusted by some of the best newsletter businesses:
Ad examples
We’ve entered an online trust recession
The days of instant high ticket conversions from cold traffic are gone.
This is how we’re converting cold traffic in 2025:
Using paid ads to get leads to sign up to a newsletter
Leads get warmed up with strategic content that builds trust and authority
Leads convert to offers: high ticket, paid subscription, advertiser offers etc.
How We Grow Your Newsletter (And Your Business)
Deep Avatar Research That Uncovers Your Perfect Buyer
Reverse-engineer your best customers
Ad Campaigns That Speak Directly to Buyers (and No One Else)
Once we know your buyer—we craft ad campaigns designed to stop them mid-scroll and get them on your list.
Nurturing Process That Builds Trust & Converts
To the leads, they’ve signed up to a newsletter delivering great content and massive value. To you, this is strategic content that turns cold leads into warm buyers.
Conversion Events That Turn Newsletter Subscribers Into Customers
Finally, we lead subscribers to a clear call-to-action—when they’re most primed to act.
Our clients median time from newsletter opt-in to conversion event
Client Example

Pathos Communications
Placed 33rd on Financial Times Official List of Fastest-Growing Companies in 2025
- Ad spend $80,500
- Leads generated 9,051
- Cost-per-lead $9.77
- Meetings generated 1,452
- Revenue generated $645,000
Testimonials
Meet our founder

Growjoy is ran by Gunnar Holm, a paid growth expert for some of the biggest newsletters in the world. He focuses on helping newsletters with proven monetization strategies hyper-grow with paid ads. His clients range from newsletters with 50K all the way up to 5M+ subscribers.