SBL - AI-powered LinkedIn and WhatsApp sales automation with persuasion

What is SBL

If you have ever spent hours manually crafting LinkedIn messages, only to get ignored or—worse—watch your account get restricted, you are not alone. Most sales representatives face the same frustrating reality: typical response rates sit at a measly 5-8%, and the effort required to scale outreach feels like a full-time job in itself. The fear of getting your account banned looms every time you hit "send" on a mass message.

This is exactly why SBL exists. SBL (formerly SecondBrain Labs) is the world's first "persuasive" AI sales automation platform—and that distinction matters. Unlike generic automation tools that simply blast messages at scale, SBL was built on a foundational principle: apply the psychology of influence to every outreach attempt. Drawing from established research on what makes people say yes, SBL transforms cold outreach into genuine conversations that actually get responses.

What makes SBL different is its multi-channel approach. Rather than relying on a single platform, SBL integrates directly with both LinkedIn and WhatsApp, letting you reach prospects where they are most responsive. The AI engine handles the heavy lifting—after that first message, SBL autonomously manages 95-99% of the entire conversation flow. It remembers context, recognizes intent, handles objections, and even schedules meetings without you lifting a finger.

The results speak for themselves. SBL has already sent over 50 million messages with a documented zero-account-ban record—that is a 99.9% account safety rate across its entire user base. Users report an average response rate of 18%, more than double the industry standard. And perhaps most importantly, conversion rates from reply to booked demo hit 12-13%, compared to the typical 5% benchmark.

Core Features That Drive Results

SBL is packed with capabilities designed to help you scale outreach without scaling risk. Here is what you can actually use to move the needle for your business.

Deploy Unlimited Fractional SDR Profiles lets you run one, ten, or hundreds of AI-driven outreach profiles as easily as adding an email address. Each additional profile adds approximately 800 new contacts to your pipeline every month, starting at just $35 per profile. This means you can expand capacity on demand without the cost and complexity of hiring and training new sales development reps.

The Multi-Channel Outreach feature covers LinkedIn, WhatsApp, Email, and even voice calls—all from a single AI-powered engine. This is critical because different prospects prefer different channels. With SBL, you can build full-funnel sequences that start on LinkedIn, follow up on WhatsApp, and close via email, all while the AI tracks which channel delivers the best response for each prospect.

One of SBL is most powerful capabilities is AI Autonomous Chatting. Once that first message goes out, the AI takes over completely. Using a context-aware conversation engine with intent recognition, SBL qualifies leads, answers questions, handles objections, and books meetings—all automatically. In practice, this automates 95-99% of your entire conversation workload, freeing you to focus on closing deals rather than typing replies.

The Lead Scoring Agent uses machine learning to automatically rank and prioritize your prospects based on their likelihood to convert. Users report this feature delivers 3x better response rates because your team focuses energy on leads that actually matter, not just whoever replied first.

Managing multiple accounts used to be a nightmare—SBL fixes that with a Unified Inbox that brings every conversation from every profile into one clean interface. Whether you are running 5 profiles or 500, you see everything in real time, with full team collaboration support.

Smart Sequences automate the human-like touches that make outreach feel genuine: profile views, connection requests, likes, and comments—everything spaced with natural random delays so LinkedIn algorithms never flag your activity as bot-like.

The Never-Get-Banned System is perhaps SBL is most reassuring feature. It enforces LinkedIn is strict daily limits (200 messages per day, 200 connections per week), adds randomized 30-second-to-5-minute delays between actions, and gradually ramps up activity over time to build account credibility. The result? A 0.3% restriction rate compared to the 12-15% industry average—a difference that literally protects your business.

Additional capabilities include Sales Navigator Integration for importing prospects directly without risky exports, AI Voice Cloning for sending personalized audio messages at scale, and Advanced Analytics with real-time visualization of every metric that matters.

Who Should Use SBL

SBL serves a wide range of users—from solo sales representatives to enterprise sales teams. Here is how different people leverage the platform to solve their specific challenges.

Individual Sales Representatives often struggle with the math: manually contacting prospects is slow, repetitive, and carries the constant risk of account restrictions. With SBL, you can deploy Fractional SDR profiles alongside AI-powered auto-chat to double your outreach capacity without the ban anxiety. Many individual users report getting twice the meetings done in half the time.

Sales Agencies managing multiple clients face a different problem entirely—account chaos. Juggling dozens of LinkedIn and WhatsApp accounts across different campaigns is a logistical nightmare. SBL is unlimited workspaces combined with a unified inbox let agencies manage every client is activity from a single dashboard. One agency, JNN Group, generated $60K in pipeline using SBL to manage their client outreach at scale.

Sales Teams Looking to Scale typically hit a wall when trying to grow beyond their current headcount. Hiring, onboarding, and managing SDRs is expensive and slow. With SBL, adding outreach capacity is as simple as provisioning a new Fractional SDR profile. No interviews, no training, no HR overhead—just add a profile and start reaching more prospects immediately.

High-Ticket Product Sellers need a different approach. Premium offers require genuine relationship building and personalized nurturing over time. SBL is context-aware AI conversations combined with smart sequences let you deliver highly personalized outreach at scale. Users have seen 12-13% conversion rates from reply to booked demo—2 to 6 times the industry average—because the AI remembers conversation history and tailors responses accordingly.

Businesses Running Multi-Channel Funnels know that single-channel outreach is never enough. Prospects might check LinkedIn but respond better on WhatsApp. SBL lets you build sophisticated cross-channel sequences that follow up on multiple platforms, dramatically increasing your overall reach and response rates.

Global Sales Teams face language barriers that kill momentum. SBL breaks down this wall with automatic translation and personalization in over 100 languages. Whether you are selling into Europe, Asia, or Latin America, your outreach feels local—even though it is fully automated.

Teams with Stale Leads often have a goldmine of dormant prospects they gave up on. SBL is intelligent re-engagement tools combined with analytics-driven campaigns have helped users achieve a 60% improvement in response rates from previously silent leads.

Getting Started Fast

One of SBL is strongest selling points is how quickly you can go from sign-up to your first live campaign. Most users are up and running in 15-60 minutes.

Step 1: Create Your Account Visit app.secondbrainlabs.com/signup and create your account. The registration process is straightforward—just your email and a quick verification.

Step 2: Connect Your LinkedIn Account Link your existing LinkedIn profile (or profiles). SBL requires real, active LinkedIn accounts—this is essential for maintaining 100% compliance with LinkedIn is Terms of Service. Your account should be at least 6 months old with reasonable activity history.

Step 3: Set Up Your SDR Profile Choose an existing Fractional SDR profile or create a new one. Define your outreach targets, ideal customer profile, and campaign objectives. This is where you tell SBL who you want to reach and what your value proposition is.

Step 4: Launch Your Campaign Hit start. SBL will begin sending connection requests and initial messages based on your configuration. From there, the AI takes over the conversation flow automatically.

Account Setup Requirements: You will need a stable internet connection, a Chrome browser, and at least one legitimate LinkedIn account in good standing. SBL performs best when accounts have established history and connections.

Scaling Timeline: SBL recommends a graduated ramp-up to build account credibility. During your first week, expect around 20 connection requests per day. By week two, you can scale to 50 per day. By week three, most accounts reach full capacity—75 connection requests and 200 messages per day per SDR profile. This gradual approach is baked into SBL is safety systems and contributes directly to the 99.9% account safety rate.

Typical Results Timeline: Most users see first responses within 5-7 days. Booked demos typically follow within 2-3 weeks of launching a campaign. These timelines vary based on your target audience and messaging, but the platform is designed to deliver measurable results fast.

Integrations: SBL connects seamlessly with HubSpot, Salesforce, Zapier, and n8n, letting you sync leads, contacts, and activity data with your existing CRM stack without manual data entry.

Pricing Plans

SBL is priced on a straightforward tiered model based on monthly reach volume. All plans include core AI capabilities, multi-channel outreach, and the zero-ban safety system.

Fractional SDR Profiles: In addition to platform pricing, you can add Fractional SDR profiles starting at $35/month per profile. Each profile adds approximately 800 new qualified contacts to your pipeline monthly—a highly cost-effective way to scale outreach beyond what your internal team can manage.

Money-Back Guarantees: SBL stands behind its product with a 90-day money-back guarantee, giving you ample time to test the platform and verify results. If any of your accounts face restrictions despite SBL is safety systems, the team provides free replacement within 48 hours.

Who Should Choose What: The Starter plan is ideal for individual SDRs and solopreneurs who need powerful automation without the overhead of a full team. The Pro plan suits small teams (2-5 people) that need CRM integration and faster support. The Business plan is built for mid-sized companies and agencies that require analytics, team collaboration features, and personalized support. The Custom plan is for enterprises needing unlimited scale and bespoke solutions.

Frequently Asked Questions