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Guide

How to use every part of MailFlyr, in plain English. Pick what you want to do.

What MailFlyr does

Email Finder

Give a name and a company website; get back that person's verified work email.

Email Verifier

Check emails you already have, so you only send to addresses that exist.

Lead data

Export lists of leads from Apollo, Sales Navigator, Crunchbase and LinkedIn followers.

Phone numbers

Upload LinkedIn profile links and get each person's phone number.

Signals

Watch target companies for buying signals: hiring, funding, layoffs, tool changes.

Two balances

  • Email credits come with your monthly plan and pay for finding emails, verifying emails and signals. They refill every month.
  • Scraper credits are bought once as packs in Billing and pay for lead data and phone numbers. They never expire, and a scrape can never spend your email credits.

Your first ten minutes

  1. 1Confirm your email address from the link we sent you. Searches stay locked until you do.
  2. 2Open Email Finder and upload a small CSV of names and company websites. The Free plan includes 50 credits a month to try it.
  3. 3Download the results, and run any list you already own through the Email Verifier before you send.
  4. 4When you need more volume, pick a plan under Billing.

Glossary

MCP
Model Context Protocol — the standard way AI assistants (Claude, ChatGPT, Cursor, VS Code) connect to outside tools like MailFlyr.
ATS
Applicant-Tracking System — the software a company runs its hiring through (Greenhouse, Lever, Ashby, Workday…).
MX record
The DNS record that says which service handles a domain’s email (Google, Microsoft, Zoho…).
SPF record
A DNS record listing which tools are allowed to send email as a company — reveals Klaviyo, HubSpot, Outreach.
Form D
The SEC filing a company submits when it raises private capital — a funding round, even with no press release.
8-K
An SEC filing for a major corporate event: an acquisition, an executive change, big news.
S-1
The SEC registration a company files to go public (IPO prep).
CIK
Central Index Key — the SEC’s unique ID number for a filer.
WARN notice
A state government filing large employers must submit in advance before layoffs or a plant closure.
crt.sh
A public log of SSL certificates — new subdomains show up here first (app., shop., docs.).
Baseline
The first scan of a company. The 10 diff-based signals record current state and emit nothing. Hiring velocity, WARN, Product Hunt and “app gone stale” DO fire on the first scan — each is a dated event, not a change.
Webhook
A URL the platform POSTs new matches/signals to, so they flow into your own tools automatically.