Why Cortex
Ten reasons email teams pick Cortex: autonomous weekly strategy, competitive intelligence, and statistics you can audit.
A complete weekly strategy, written for you
Cortex produces a full marketing plan every week: campaigns, budgets, segments, and messaging for every region you sell in.
Every Monday, Cortex delivers a weekly strategy with campaign copy, subject lines, audience segmentation, and budget recommendations grounded in your historical performance. Approved strategies deploy to Klaviyo, with more ESPs on the roadmap.
Competitive intelligence built in
Cortex monitors the competitor inboxes you choose across nine regions and turns what they send into input for your strategy.
Campaign analysis covers subject lines, offers, send patterns, and creative themes, with alerts when a competitor spikes in activity. What the monitors find feeds straight into your weekly strategy, with regional variations tracked per market.
Two AI models, each doing what it does best
Claude handles deep reasoning and strategy synthesis. Gemini handles high-throughput analysis and data parsing.
Strategy synthesis, reasoning, and business judgment run on Claude. High-volume data parsing and competitor analysis run on Gemini. Each model works the part of the pipeline it is strongest at, so neither becomes a bottleneck.
Statistics computed in Python, not guessed by AI
Every number is computed in Python using pandas, SciPy, and statsmodels. AI only interprets pre-computed results.
SciPy runs the hypothesis tests and statsmodels runs the forecasts, with confidence intervals and p-values on the results. There is a full audit trail from raw data to final number, and no KPI is ever generated by a language model.
Built for many markets at once
Nine markets with localized holidays, compliance, competitors, language, and send windows, all managed by one system.
US, UK, Germany, France, Italy, Netherlands, Spain, UAE, India. Each market gets its own compliance handling (CAN-SPAM, GDPR, PDPL, DPDP), its own competitor intelligence, and strategies localized to its calendar and language.
A knowledge base that improves every week
Six-round progressive research builds a living library of tactics. Every approved insight makes future strategies smarter.
Research starts broad and narrows round by round. Approved strategies and their outcomes are captured, generalized, and folded back into a living tactics library, so a playbook specific to your brand builds over time.
Human-in-the-loop when it matters
High-confidence plans move ahead with your approval. Uncertain decisions get flagged for review. You stay in control without being in every loop.
Every recommendation carries a clear confidence score. High-confidence strategies are queued for a quick approval, lower-confidence decisions are flagged for human judgment, and you can challenge or override any of them.
Know which campaigns drive revenue
Cortex matches emails to orders across 1-day, 7-day, and 30-day windows, so revenue attribution is visible per campaign.
Order-to-email matching comes with confidence scoring, and return on ad spend is calculated per campaign, per segment, and per market. Long-tail conversions show up in the longer windows instead of disappearing.
Ask your data questions in plain English
Ask 'What was our best UK campaign last month?' and get an answer backed by real database queries.
Plain-English questions are translated to SQL, powered by Claude, with instant charts on the results. Every query traces back to your database, so every answer is auditable across campaigns, segments, markets, and time periods.
Sits on top of your ESP, not instead of it
Cortex works with Klaviyo and is expanding to Braze and Iterable. It adds the intelligence layer; your ESP keeps sending.
Bi-directional sync pulls your data in and pushes approved campaigns back out, so your ESP stays your center of operations. Integration happens through API keys, without migrating a single list.
See all ten on your own data
Book a demo and we'll walk through the competitor view, the analytics, and a weekly strategy built the way yours would be.