director.
A former NASA atmospheric physicist applies the same experimental discipline he used on planetary-scale datasets on super-computers to your Klaviyo account. The science is different, but the rigour is identical.
Poisondart is the Klaviyo Experiment Lab. The idea is simple: your email account is not a thing you set up and leave running. It is a complex system full of patterns and signals that only reveal themselves if someone is genuinely paying attention. We pay attention.
The founder has a PhD in atmospheric microphysics and spent time working with NASA on large-scale atmospheric datasets. That background shapes how we think about complex systems – methodically, attentively, always asking why before acting. Modelling chaotic atmospheric systems and modelling customer behaviour in Klaviyo are more similar than they sound. Both are complex, noisy, full of signals that only make sense if you know how to look.
Applied to Klaviyo, this means we go deeper than most. Every significant decision is preceded by a formal hypothesis with defined variables and a significance threshold. The result is confirmed or it is not. We don't dress up a coincidence as a finding or a best practice as a conclusion. The five proprietary experiments we run on every account are experiments in the scientific sense of the word, rather than just simple frameworks.
But there is a second dimension to what we do that most Klaviyo agencies cannot offer. We write. We're not talking about copy that just fills spaces between product images. Actual narrative – emails that function as scenes, with characters and true stories and the kind of specificity that makes a reader feel they have been somewhere rather than been sold something. A seven-email welcome sequence we wrote for a UK baby goods brand held a 94.47% average open rate across all seven emails and converted at 10.98%. A single campaign email about a product restock – interrupted by a live stockroom argument with an inept empployee – achieved 70% open rate on a broadcast. Industry benchmark is 20-25%.
The data rigour and the literary craft are not separate services. They inform each other. The measurement tells us which creative approaches are working and why. The creative quality means the experiments have better raw material to work with. Together they produce results that neither produces alone. The lab reports show exactly how.
We work with ecom brands that want their email programme treated as the serious revenue channel it is – and that understand email is not just a distribution mechanism but a relationship. If you want someone who will stay in the data, keep improving, write things worth reading, and tell you the truth about what they find – let's talk.