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Live in five minutes
If a merchant can't get to first recovered cart in under an hour, we've failed. Setup time is a product metric, not a sales objection.
About Callsy · Est. 2025
We build the AI voice team your e-commerce store would never hire.
261+ merchants. 40,000+ conversations. €800,000+ recovered. Founded in Tallinn in 2025. Backed by 500 Global and Firstpick VC. Headquartered in Estonia, with offices in Vilnius, London, and Wyoming.
261+
Active merchants
40K+
Conversations handled
€800K+
Customer revenue recovered
40+
Languages supported
Our story
Callsy started with a simple observation: every D2C founder we talked to was bleeding revenue at checkout, and every recovery channel they ran. Email, SMS, retargeting. Had plateaued. The one channel that historically worked best (a real phone call) was economically impossible at scale.
We built Callsy to close that gap. Modern neural text-to-speech and real-time LLMs make AI voice calls indistinguishable from a calm, professional human agent. At €0.18 per call instead of €4 to €12. That's not an incremental improvement. It's a category shift.
In our first year we've been live across 14 countries, in 40+ languages, on Shopify, WooCommerce, Klaviyo, HubSpot, WhatsApp, and every webhook system imaginable. Our merchants recovered over €800,000 they would otherwise have written off. We're just getting started.
How we operate
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Voice is the next default channel
Email is saturated, SMS is opt-in-friction-heavy, push is noise. Voice cuts through where every other channel has plateaued. And AI makes it economically viable for the first time.
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Honest comparisons over hype
We publish side-by-side comparisons with our actual competitors. If we're the wrong tool for a buyer's situation, we say so. Trust is the durable moat.
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Compliant by default
AI disclosure on every call, TCPA + GDPR + EU AI Act pre-wired, opt-outs honored instantly across all channels. Operators shouldn't have to architect compliance. Vendors should ship it.
Backed by
500 Global
One of the most active early-stage funds in the world
Firstpick VC
Baltic + CEE early-stage specialist
Where we are
Tallinn
Estonia
HQ. Engineering, product
Vilnius
Lithuania
Engineering, customer success
London
United Kingdom
Sales, partnerships
Wyoming
United States
US entity, BD
The team
A note from the founder
We started Callsy because every D2C founder I talked to was burning ad spend on traffic that abandoned at checkout. And email recovery had plateaued. Voice was the obvious answer; AI finally made the unit economics work. If you're in the same spot, I'd love to hear about it.
Arūnas Vismantas
Founder & CEO · Tallinn
Press + media
Working on a story about AI voice agents, abandoned cart recovery, or the e-commerce stack in 2026? We're happy to share data, customer references, and detailed metrics, including verified recovered revenue numbers for stores using Callsy.
- Press contact: hello@callsy.ai
- Brand assets: available on request (logo, founder photo, screenshots)
- Verified customer data: 5 case studies live at callsy.ai/case-studies
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