Leadspace Sidekick Chrome Extension
The contact data you need. The AI that turns it into pipeline.
Enterprise B2B intelligence on LinkedIn. Free to start.

Less expensive than
ZoomInfo & Apollo
Faster time-per-lead vs.
manual research
Fit scoring, outreach drafting & buying group intelligence built in
Technology categories in the data graph

What Sidekick Does
Three things no other tool does at this price.
Explore each one. Every capability is powered by 800M+ buyer identities — the same data graph used by Microsoft, Nvidia, and Salesforce.
The Foundation — Verified contact data, revealed instantly
Emails, direct dials, firmographics, tech stack. One click.
● Verified emails & direct phone numbers
Revealed on any LinkedIn profile
● Company firmographics & org hierarchy
Size, revenue, industry, parent and subsidiaries
● Technology stack
— 100+ categories, continuously updated
— not batch-refreshed monthly
The Difference — AI that works the whole sales workflow
Fit scoring, outreach drafting, buying committee mapping, job change detection.
● Fit Scoring
Instant score against your Target Audience with a plain-language explanation.
● Outreach Drafting
Cold emails, LinkedIn messages, call scripts — personalised to the contact's profile.
● Buying Committee
Map Economic Buyer, Champion, Technical Evaluator, Procurement, Exec Sponsor. Gaps flagged.
The Multiplier — Find more people just like your best ones
LookaLikes turns one perfect contact into a full pipeline.
● Point to any contact who fits your Target Audience perfectly
● Sidekick searches 800M+ identities for people with the same role profile, company type, and fit signals
Learn More About Sidekick

Sidekick
Article
ZoomInfo Alternatives for Enterprise GTM Teams: What to Evaluate Beyond Contact Volume
Your contact database is not your data strategy. Yet most enterprise renewal conversations treat them as the same thing.
When your ZoomInfo contract comes up for review, the questions usually center on seat counts, credit limits, and record volume. Those questions miss the point. The real issue sits deeper in your stack, where records get matched, scored, routed, and pushed into automation.
If you lead RevOps, marketing operations, or sales operations at an enterprise, you already know the symptoms. Duplicate accounts across regions. Leads that never connect to the right buying group. Scoring models trained on stale attributes. Territory rules that fire against the wrong hierarchy.
This guide walks through how to evaluate Zoominfo alternatives against the architecture you operate, not the demo you sit through.

Sidekick
Article
B2B Email Bounce Rate Benchmarks: What Good Looks Like and Why Yours Is Slipping
Your email program lives or dies on deliverability. Bounce rate is the earliest signal that something upstream has broken.
Most revenue teams treat bounces as an email problem. They are a data problem. Every hard bounce traces back to a record that entered your system stale, unverified, or duplicated.
This guide breaks down the b2b email bounce rate benchmark you should hold your team to. It also explains the architectural reasons your numbers drift, and what to fix beneath the campaign layer.

Sidekick
Article
What Is a Golden Record in a B2B CRM?
Your CRM holds thousands of versions of the truth. One account exists five times. One buyer shows three job titles. One domain maps to four different company names.
That fragmentation breaks everything downstream. Routing misfires. Scoring models train on noise. Territory assignments overlap. Forecasts drift from reality.
A golden record fixes the root cause. It gives every account, contact, and buying group one authoritative profile that your systems trust. When you understand how a golden record CRM strategy works, you stop patching symptoms and start rebuilding the data layer beneath your revenue stack.

Sidekick
Article
How to Score Prospect Fit at the Rep Level, Not Just the Account Level
Your CRM says the account is a fit. The firmographics line up. Revenue, industry, headcount, tech stack. Everything checks out on paper. So you spend two weeks working it. You send sequences, leave voicemails, and chase down contacts across the org chart. Then the deal stalls before it starts. Nobody on the buying side had budget authority. Nobody matched your ICP at the contact level. The account scored well. The people inside it did not.
This is where most sales teams lose hours they never get back. Account-level scoring tells you where to look. Prospect fit scoring tells you who to talk to when you get there. Without both, you prospect blind half the time.
How We Compare
More intelligence. At a fraction of the cost.
See how Sidekick stacks up against ZoomInfo, Apollo, and Lusha across every capability that matters.
Full
Partial
None
Sidekick
ZoomInfo
Apollo
Lusha
PRICING
$0
Freemium — no CC
Paid from $49 / user per mo
No free tier
From ~$15K / year
Limited free tier
Paid from $49 / user per mo
No free tier
Paid from $49 / user per mo
CONTACT DATA
Verified emails
Direct / mobile phone
Firmographics & tech stack
Free tier
AI INTELLIGENCE
AI fit scoring
AI outreach drafting
Buying committee mapping
LookaLikes discovery
Job change detection
CRM & WORKFLOW
CRM & sales tool push
Salesforce, HubSpot, Outreach
Works on LinkedIn
DATA FOUNDATION
Identity graph size
800M+
270M+
Compiled DB
50M+
Continuously updated
Forrester recognized
Competitor data based on publicly available information as of 2026.

Pricing
Affordable outcomes. Not just affordable software.
Verified emails, direct dials, AI fit scoring, buying committee mapping, and AI outreach — all on LinkedIn. ZoomInfo, Apollo, and Lusha charge enterprise prices for what Sidekick delivers at 2.5–10× less.
FAQ
Common Questions
What browsers does Sidekick work on?
How do credits work?
What makes Sidekick different from Apollo or ZoomInfo?'
What is LookaLikes?
Does Sidekick integrate with my CRM?
How is the buying committee map built?


