Playbooks, benchmarks, ROI math.
Deeply-researched articles from the team building Callsy. Written for e-commerce + SaaS operators, not for search engines. The kind of post we wish existed when we started.
How Callsy got funded. 500 Global, Firstpick VC, and the accelerator path
We built Callsy in Tallinn in 2025. A small team obsessed with closing the gap between AI voice infrastructure and the e-commerce operators who needed it yesterday. Along the way we joined 500 Global and Firstpick VC. Here's how that actually happened. The pitches that worked, the ones that didn't, and what we'd tell any founder going through the same process.
Read the articleAbandoned cart benchmarks 2026. By industry, AOV, region, and channel
Global e-commerce cart abandonment sits at 70% in 2026, ranging from 65% (apparel) to 84% (consumer electronics). Email recovery flows recover 5–8%, SMS adds 4–10%, AI voice recovers 18–32%.
AI voice agents in 2026. The complete guide for e-commerce + SaaS
An AI voice agent is software that holds a real-time phone conversation using neural text-to-speech and an LLM. In 2026 they're mainstream for cart recovery, lead qualification, booking, win-back, payment reminders, and NPS.
Klaviyo + AI voice playbook. Recover 30%+ of abandoned carts
Klaviyo's email + SMS abandoned-cart flow tops out around 8% recovery for most stores. Adding AI voice as the first touch (5 minutes after abandonment) pushes total recovery to 25–40%.
Voice vs email vs SMS for cart recovery. The real numbers
Email recovers 5–8%, SMS 4–10%, voice 18–32%. But the right question is not 'which one?'.
How to write a 90-second AI voice script that converts
The best AI voice scripts are 90 seconds, follow a four-part structure (disclosure → context → ask → resolve), and never try to sell. Here's the template we use across cart recovery, win-back, and payment reminder calls.
Speed to lead. Why 5 minutes matters more than any other channel choice
Harvard Business Review's classic study: contacting an inbound lead within 5 minutes is 21× more effective at qualification than waiting 30 minutes. Most B2B teams average 42 hours.
The Shopify cart recovery stack we recommend in 2026
An opinionated Shopify cart recovery stack for 2026: Klaviyo for email + SMS, Callsy for voice + WhatsApp, Triple Whale for attribution, native Shopify Pay for checkout speed. Why each piece, in what order, and what to skip.
AI voice agent compliance. TCPA, GDPR, EU AI Act explained
Three regulations cover AI voice in 2026: TCPA (US), GDPR (EU), and the EU AI Act (extra-territorial). Here's what each requires, what's a real risk vs paper concern, and how Callsy handles each by default so you don't have to architect compliance yourself.
Want this in your stack?
Reading is good. Recovering 30% of carts is better. 70% off launch promo to try Callsy live.