SBL.so

SBL.so is an autonomous AI SDR that finds high-intent leads on LinkedIn, runs fully personalized 1:1 outreach, handles every reply, follow-up, and objection, and books meetings on your calendar automatically.

What is SBL.so?

SBL.so (from Magillabs Technology Private Limited in Karnataka, India) is an autonomous AI sales development representative that operates entirely inside the LinkedIn ecosystem. Instead of just automating the sequence and handing the conversation back to you when a prospect replies — which is where most LinkedIn tools stop — SBL's AI carries the conversation end-to-end: it identifies leads by prompting your ideal customer profile in plain English, runs personalized 1:1 outreach, handles replies and objections with a persuasion-science-trained chat model, times follow-ups off engagement, and books the meeting on your calendar before you ever touch the keyboard. It runs on vetted LinkedIn sender profiles rather than your personal account, supports unlimited profile connections with auto-rotation to respect LinkedIn's caps, and layers in intent signals (paste any public post URL to capture who's engaging), lead scoring before outreach, and rich media like AI-cloned voice notes and PDFs. There is no TrustRadius listing yet — this is a brand-new tool — but the vendor cites 4.7/5 on G2 and the AppSumo launch earned 4.4/5 across 68 reviews (55 of them five-taco). The AppSumo lifetime deal sold out; ongoing pricing starts at $99/mo with a 7-day free trial, with a 60-day money-back guarantee.

Key Features

• Autonomous AI SDR — Defines your ICP via a plain-English prompt or Sales Navigator import, then finds targeted leads and runs the full outreach conversation to a booked call without manual intervention
• Persuasion Chat Model — AI trained on real sales conversations that identifies and answers common objections, qualifies prospects, and keeps momentum instead of stopping at the first reply
• Sequenced follow-ups with smart delays — Monitors replies, engagement, and inactivity to time each follow-up, so warm leads don't go stale and hot ones get attention fast
• Multi-account management & auto-rotation — Connect unlimited LinkedIn sender profiles in one workspace; campaigns auto-rotate before any single account hits its limit
• Intent signals & lead scoring — Paste any public LinkedIn post URL to capture people engaging with a relevant topic, and score every lead against your criteria before a single credit is spent
• Rich media outreach — Send AI-cloned voice notes, videos, PDFs, images, and links inside automated sequences for a more human, less templated feel
• Unified inbox with human-in-the-loop — Intervene manually on hot leads or flag uncertain AI conversations without losing campaign momentum
• MCP server & API access — Drive campaigns, add leads, and check conversations from Claude, ChatGPT, or Gemini, plus two-way HubSpot sync, a built-in CRM, and public APIs

Who is it for?

• Founders and solopreneurs running their own outbound without hiring an SDR — the AI does the prospecting, outreach, and follow-up so you just show up to close
• Sales teams that want 5–10x more booked meetings per rep without burning the team out on manual copy-paste follow-up
• Agencies managing outreach for multiple clients from one dashboard, with a separate workspace and LinkedIn profile per client
• Anyone doing B2B outreach on LinkedIn who hates chasing cold leads and wants replies, objections, and bookings handled automatically

Who is it NOT for?

• Mass-blasters looking for a tool that sends thousands of generic messages with no strategy — SBL explicitly positions against that and it will waste your credits
• B2C businesses or anyone whose audience isn't on LinkedIn — this plan is LinkedIn-only (WhatsApp is a separate paid channel)
• People who want truly unlimited, worry-free outreach — the credit meter runs down and top-ups cost $60 per 10,000 credits
• Compliance-averse teams who can't tolerate browser-automation ToS risk on LinkedIn, because that is exactly how this tool works
• Teams needing deep review history before buying — there's no TrustRadius listing yet, just G2 and AppSumo launch reviews
• Latecomers to the deal: the lifetime deal is sold out, so at $99–$189/mo you're paying recurring for a tool you could have owned for $89