Find leads with LeadSonar
LeadSonar is a lead finder. You describe who you want
to reach (industry, job title, company size) and LeadSonar finds those people and their work emails, ready for your
sequencer. It’s a sister product of Maildeck, at leadsonar.io.
Inboxes only matter if they’re sending to the right people. LeadSonar is the part of your setup that decides who those people are.
Where it fits in your stack
Section titled “Where it fits in your stack”Every cold email setup has four parts. LeadSonar is part 3.
| Part | What it does | Tool |
|---|---|---|
| 1. Infrastructure | The inboxes and domains you send from, set up and warmed | Maildeck |
| 2. Sequencer | Sends your campaigns and follow-ups | Instantly, Plusvibe, Smartlead, EmailBison, Manyreach |
| 3. Leads & enrichment | Finds the right people and their work emails | LeadSonar |
| 4. Cleaning & verification | Removes bad and risky addresses before you send | EmailShield |
“Enrichment” means filling in the details about a contact, such as their work email, job title and company, so you can reach them and write to them properly. New to the four parts? Read Cold email basics.
How it helps
Section titled “How it helps”- The right people on your list means more replies from the same sending. Your inboxes can only send so many emails a day, so each one should go to someone who might actually care.
- Emails come verified (with EmailShield), so you start with a clean list. Fewer bounces keeps your domains healthy.
- No more buying stale lists or copying contacts by hand.
What it does
Section titled “What it does”- Waterfall enrichment across 18+ B2B data vendors (if one source doesn’t have the email, it tries the next)
- AI ICP scoring that grades each lead A through D (your ICP, or “ideal customer profile”, is a description of the kind of company and person you sell to)
- Triple-verified emails and direct phone numbers
- Filters by headcount, industry, keywords and funding stage
- AI-written personalized cold email openers
- Built-in EmailShield verification before export
- One-click CRM sync and bulk exports
How many contacts do you need?
Section titled “How many contacts do you need?”A sequence usually sends each contact about 3 emails (the first email plus follow-ups). So as a rule of thumb:
Contacts needed per month ≈ emails you plan to send per month ÷ 3
To get the emails figure, start from your goal. Our rule of thumb is about 1 booked call per 500 cold emails.
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Pick a goal. Say you want 50 booked calls a month.
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Turn calls into emails. 50 calls × 500 = 25,000 emails a month.
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Turn emails into contacts. 25,000 ÷ 3 ≈ 8,300 new contacts a month to find with LeadSonar (and verify with EmailShield).
A bigger example: 300 calls a month → 150,000 emails → about 50,000 new contacts a month.
Getting started
Section titled “Getting started”LeadSonar has its own account and its own pricing, which you’ll find on its site. In the Maildeck app it’s listed in the sidebar under Leads.