Rehook Avis 

Wasn't happy with the old Email marketing agency I was working with and was referred to James by a friend.

He is well-priced and delivers amazing work. The service he provides is also amazing. Highly recommend James to any brand looking for email marketing help!

I was referred to James from a friend and couldn’t be happier with the value of service. James and his team created multiple flows and popups for our brand and they are a million times better than I could’ve done.

The flows are suited perfectly for not only our brand, but for our target customers as well. The popups follow the same suit, and am excited to work with James and the team in the future on our campaigns.

If you need some top notch emails
/ sms for your brand, I couldn’t recommend James and the team enough.

Had the pleasure of working with James on my email marketing designs and I couldn't be happier with the results. James took the time to understand the business. The designs are not only aesthetically pleasing but aligns with our brand's vision and values.

He is super responsive to any questions and enquiries I had, quick to action and delivers high quality work.

James created 7 email flows and had even implemented them into Klaviyo for us. I didn't realise how challenging this is after watching 982349 hours on Youtube on how to properly convert email marketing designs into Klaviyo - email marketing is a lot more complex than I thought :'). This service made the whole process seamless and enjoyable.

Highly recommend working with him! :)

James is a super experienced email marketing expert for DTC Shopify brands. He helped me setup the core flows in record time, had a lot of great ideas and tips on how to make my original ideas even better, and also worked super fast. Always available for a quick question as well which is helpful.

I had the absolute pleasure of working with James, and I can confidently say he exceeded all expectations. From day one, he brought a level of creativity and precision that truly set him apart. The email campaigns he set up were not only visually stunning—featuring amazing, on-brand graphics—but also thoughtfully designed to drive engagement and results.

What really stood out was James’s outstanding communication. He kept me in the loop at every stage, was super responsive, and made sure every detail aligned with my vision. His attention to detail is next-level—nothing slipped through the cracks.

If you’re looking for an email marketer who’s skilled, reliable, detail-obsessed, and just great to work with, I highly recommend James. He made the entire process smooth and enjoyable—and the results absolutely speak for themselves. You won’t be disappointed!

Great service, great designs, and fast implementation! James is amazing, extremely professional, responsive and I would highly recommend him for anyone looking for email!

I even referred him a couple of my friends who I believe would benefit greatly from his services!

So helpful in creating amazing email content & flows. Really understood the brand and came up with great ideas to help end age better with customers. Amazing to work with from start to finish.

Our experience has been awesome - James is a beast! He's extremely efficient, responsive and always goes above and beyond his scope of work. We've consistently seen an increase in revenue from our campaigns each month, and he's been split testing our current flows with emails he puts together and his emails always outperform ours. We couldn't be happier, and would recommend anyone to work with James.

Over 229% increase in email revenue for our brand just one month into working with James. He is a silent and fast worker, gets stuff done pretty fast. Got so much more time on my hands now without having to worry about what flows or campaigns to schedule. Would love to see what other kind of campaign/flow styles we can test so we can push more rev on email the next couple of months! Love working with you James! :)

Having worked with several email marketing companies for my startup Kavahana, I can confidently say that James Berry/BoostBerry stand in a league of their own. From the very beginning, James brought an unparalleled level of dedication, creativity, and insight to our email marketing. He literally took us from pretty much 0 to 30% of our ecommerce revenue in just 30 days. It takes a LOT for someone to go in and start from scratch, and create something on their own within our company.

What immediately stood out was how deeply James understood our brand voice. He captured our brand's tone and energy better than anyone ever has. Every email felt like an extension of our team, not just a marketing message or ChatGPT/AI copy. That kind of alignment is incredibly rare, and something I've only seen with my co-founder.

What blew me away even more was his design work. I was genuinely shocked to learn that BoostBerry did all of our email design in-house. The design sensibilities are next-level: super elegant, engaging, and always on-brand. He’s hands-down one of the most talented designers I’ve ever seen, and that’s saying something.

I'm pleased to share that BoostBerry has become a core part of marketing team. They puts their all into the work and it shows in every open rate, every click-through, and every glowing comment from our audience.

If you’re looking for someone who’s as strategic as they are creative, who “gets it” at every level, you won’t find anyone better than James! Thank you!

We’ve been working with James for over a month now and he’s completely embedded himself into the team. He’s full of ideas, his email designs are beautiful and our email performance has improved significantly. I’d recommend James to anyone who’s looking to better their email strategy (I already have!)

We have been working with James for a few months now he has already exceeded our expectation and delivered awesome creative work on our email flow. He has a great understanding of optimisation and we would highly recommend him to anybody planning to improve their sales via email marketing.

I thought we hired an email agency, but found a business partner.

That's how I felt when we started working with James.

He genuinely cares about the success of the business. He genuinely cares about the customers' needs.
He genuinely cares about brining the results he promised.

You know how hard it is to find an agency or someone that actually delivers value that's very tangible.

After James took over our Klaviyo account, our email opt-in rate went from 12% to 20% in under 4 weeks.

He has tested so many campaigns, formats, contents, and offer to find the perfect balance between educational contents, engaging contents, and sales content.

So proud what we were able to achieve with James in such a short period of time.

I’ve had the pleasure of working with James on email marketing for my business, and I can’t recommend him enough! James brings professional knowledge with Email marketing, strategy, and deep expertise to every campaign he manages. His emails are highly effective, consistently driving engagement and conversions. James takes the time to understand our brand’s voice and audience, which shows in the quality and relevance of each email. He’s also incredibly responsive and easy to work with, always open to feedback and quick to implement changes when needed. If you’re looking for someone who can elevate your email marketing, James is definitely the right choice! Thanks so much James

I have worked with James for a few months now redesigning all of our email automations along side new email campaigns to go out every few days. James made the whole process very easy for me so it did not take more than a few minutes of my attention away from other areas of my business. I have already recommended Boostberry to other friends of mine and will be getting more services for my brands. 10/10 service and communication.