Sbl.so

Sbl.so, formerly SecondBrain Labs, sells an AI sales development representative for B2B teams that want more booked meetings without hiring SDRs. The software identifies prospects who show buying intent, writes personalized connection requests and messages, follows up across LinkedIn and WhatsApp, and schedules qualified calls in the user's calendar. Customers can connect their own accounts or send from ready-to-use managed sender profiles, and a shared inbox lets a whole team handle replies. Safety limits are built in to protect accounts. An API and an MCP server let developers plug the outreach engine into other tools. It is used by founders, sales teams and agencies running outbound for several clients.