Glossary

Bounce — An email that comes back undelivered, usually because the address doesn’t exist. A high bounce rate pushes your emails into spam.

Catch-all — A mail server that accepts email for any address at its domain, so verification can’t confirm whether a specific person exists.

Credit — The unit you spend in LeadSonar. Searching is free; revealing, exporting and AI enrichment cost credits. Details →

Domain — The part of an email address after the @. Cold email is sent from separate domains so your main one is never at risk.

Enrichment — Filling in more about a lead: ICP grade, what their company does, a personalized opener. Details →

Export — Getting leads out of LeadSonar as a CSV file.

ICP (ideal customer profile) — A one- or two-sentence description of the companies and people you sell to.

ICP grade — How well a lead fits your ICP, from A (strong) to D (poor).

Inbox (mailbox) — One email account you send from. Each one can only send a few dozen cold emails a day safely.

Lead — One person you might email.

My Leads — The tab in the Lead Finder holding everyone you’ve revealed. It doesn’t expire.

Preset — A saved set of Lead Finder filters, kept on your account.

Reveal — Unlocking a lead’s contact details. 1 credit per person, never charged twice.

Sequencer — The tool that sends your emails and follow-ups on a schedule (Instantly, PlusVibe, Smartlead…).

SPF, DKIM, DMARC — DNS records that prove your emails really come from your domain. Maildeck explains them →

Verification — Checking an address can receive email before you send to it. EmailShield →

Warm-up — A few weeks of gentle, automatic sending that builds a new inbox’s reputation before it sends cold email.