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What is Second Brain Labs?

Sbl (Second Brain Labs) is a LinkedIn outreach automation platform designed to help solopreneurs and teams build scalable B2B pipelines. Built by Second Brain Labs, it solves the problem of manual, low-response LinkedIn prospecting by combining AI-powered personalization with multi-account management. Core capabilities include AI autopilot for messaging and objection handling, fractional SDR profiles to scale outreach without hiring, and a lead engine that finds high-quality prospects from 100+ sources. The tool supports multi-channel outreach across LinkedIn, WhatsApp, email, and phone, and offers features like AI voice clone, smart sequencing, and unified inbox. It fits workflows for sales teams, agencies, and founders who need consistent, compliant, and high-volume LinkedIn outreach. With a 4.8/5 rating and over 50 million messages sent, Sbl emphasizes safety and compliance to avoid account bans.

AI Tool Review Summary

Performance Score

4.8/5

Content/Output Quality

High, consistent, and on-brand

Interface

Clean and minimal

AI Technology
LLMNLPSpeech Recognition
Purpose of Tool

Automate and scale LinkedIn outreach with AI-driven personalization and multi-account management.

Compatibility

Web-based, integrates with Sales Navigator, CRM, and supports mobile app.

Pricing

Freemium with paid tiers

Features

Features with the highest value for users are highlighted here.

Unlimited fractional SDR profiles

AI autopilot for messaging and replies

Multi-channel outreach (LinkedIn, WhatsApp, Email, Phone)

AI voice cloning for personalized audio

Lead engine with 100+ data sources

Unified inbox for multiple accounts

Smart sequencing (auto-like, visit, comment)

Advanced analytics and lead scoring

How It Works

1

Define Your Ideal Customer Profile

Prompt the AI with your target customer description, and it finds high-quality leads from 100+ sources.

2

Set Up Your Campaign

Choose your outreach volume, connect LinkedIn profiles, and let AI craft personalized messages.

3

AI Runs Outreach on Autopilot

AI sends messages, handles replies, overcomes objections, and qualifies leads across all profiles.

4

Review Hot Leads and Close

Check your dashboard for ready-to-close leads, jump into conversations anytime, and sync qualified leads to your CRM.

Who Is It For?

Solopreneurs

Sales Teams

Marketing Agencies

Founders

B2B Lead Gen Specialists

Recruiters

Startups

Enterprise Sales

Freelancers

Consultants

Pricing

Free Trial

$0/free
  • 7-day free trial
  • Setup in 10 minutes
  • No credit card required

Starter

$49/monthly
  • 1 LinkedIn profile
  • 500 leads/month
  • AI autopilot
Popular

Pro

$99/monthly
  • 5 LinkedIn profiles
  • 5000 leads/month
  • AI autopilot
  • Unified inbox

Enterprise

Custom/monthly
  • Unlimited profiles
  • Unlimited leads
  • Dedicated support
  • Custom integrations

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Pros & Cons

Pros

  • Highly scalable with multiple profile management and AI-driven automation.
  • Strong focus on safety with LinkedIn-compliant behavior and no ban guarantee.

Cons

  • Pricing may be high for very small teams or individual users.
  • Some advanced features like A/B testing are still coming soon.

FAQs

Just Launched

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Reviews

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Rating

5.0

Pros

Cons

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Analytics of Privacy Policy For Sbl.so - Sbl.so | Sales Automation with Persuasion

Website traffic and keyword analysis.

Live dataFeb 2026 – Apr 2026

Monthly visits

11.05K

+133.6% vs prior month

Avg. visit duration

00:04:38

M 4 2026 snapshot

Pages / visit

4.14

M 4 2026 snapshot

Bounce rate

23.33%

Lower is better

All traffic · Worldwide

4.41K6.07K7.73K9.39K11.05KFeb 26Mar 26Apr 26

Peak: 11.05K (Apr 2026)Low: 4.41K (Feb 2026)Period growth: +150.8%Source: SimilarWeb-equivalent

Release History

0 releases published

No releases yet.

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