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I made Wazenly, Its is a WhatsApp Business Solution Provider (BSP) platform for bulk messaging and WhatsApp marketing campaigns. It gives businesses and agencies a single dashboard to send bulk campaigns, track delivery/read analytics in real time, build WhatsApp-approved message templates, manage a shared team inbox for customer replies, automate conversations with flow-based auto-replies, filter leads by interest, and run multiple WhatsApp numbers all with secure, encrypted data handling. Visit for more detail http://wazenlyapp.com/
The network for creativity
Join 1.25M professional creatives like you
Connect with clients, get discovered, and run your business 100% commission-free
Creatives on Contra have earned over $150M and we are just getting started
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Built this one for an e-commerce customer behavior project - 18,000+ customers, segmented using RFM (Recency, Frequency, Monetary) analysis.
The interesting part wasn't the segmentation itself, it was what it revealed: nearly 22% of customers were "at risk" of churning, and most businesses wouldn't know that until those customers had already stopped buying.
This is the kind of insight that's usually sitting in your order data already, it just needs the right lens. Happy to take a look at your numbers if you're curious what's hiding in yours.
Tools used: Power BI, SQL, Python (Pandas, Scikit-learn for clustering)
A client wanted one API style for the whole product. I talked them out of it first.
tRPC gives my Next.js frontend end-to-end types, zero schema drift. The moment a partner integrates, REST is all they can use without my SDK. GraphQL fits when one screen pulls from three backends.
Which one wins where, from a live B2B build: https://www.duskolicanin.com/blog/trpc-vs-rest-vs-graphql-b2b-saas-2026
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