How to Remove Dead Companies From a Lead List Before Outreach

To remove dead companies from a lead list, give each domain a verdict from its site, its parking signals and its mail records, then drop the ones that look gone. The bulk dead company website checker does this for up to 100 domains (500 after a free Google sign-in) and returns one row each: Likely gone, Check, Moved, Site is up with no mail records or Looks alive.

Every verdict is a signal. The checker cannot see whether a company is trading.

The by-hand way

Run three checks per company. Open the website and see whether it loads or shows an error. Look for a parked or for-sale page. Then check mail with dig MX example.com +short; no answer means the domain cannot receive email.

Three checks across a purchased list is hours of work, and the three answers have to be read together: a dead site with live mail is not the same case as a dead site with none.

Step 1: paste the company domains

Paste domains, emails or URLs, one per line, or upload a CSV. No account is needed for up to 100 a run; sign in with Google for up to 500.

Step 2: run the check

Each domain gets DNS lookups and one request to its home page, five at a time. No mailbox is probed and nothing is sent.

Step 3: read the verdicts

Verdict	What it means	What to do
Likely gone	The domain does not resolve, looks parked or for sale, or has a site error or no site with no MX records	Remove from the send list
Check	Something is wrong but mail is still set up, or the site refuses automated checks	Look manually
Moved	The home page redirects to another site	Search the company by name
Site is up, no mail records	The site answers but the domain has no MX	Contacts there cannot receive mail
Looks alive	The site answered and the domain has MX records	Keep, then verify the addresses

The CSV carries each row's evidence. Parking signals use the same checks as the bulk parked domain detector, and the mail side is explained in checking website and mail records for a list.

Why combine site and mail

A dead site with live MX records means the company may still read email. A dead site with no mail means nothing is listening. Reading both in one row saves cross-checking two tools. For the site alone, see how to check if a list of websites is online; for DNS and mail only, use the bulk MX lookup.

Where it fits in list cleaning

Run it before you email, not after. A closed company's addresses bounce, and bounces hurt your sender reputation. The wider routine is in the lead list quality check, and for a Sales Navigator export specifically, see cleaning a Sales Navigator lead list.

What this check cannot do

• It is a combined signal, not proof a company closed.
• Only the home page and DNS are read.
• Sites that refuse automated requests show Check.
• The limit is 100 domains a run without an account and 500 signed in.

If the company is still alive, check the contact emails

A site that answers does not mean a given mailbox exists. Once you know which companies are still around, check the addresses on your list on the verify page: the first 100 email checks are free with a Google sign-in, no card. Each comes back valid, risky or invalid with a reason, and nothing is sent to anyone on the list. To confirm every site still answers first, run the list through the bulk website status checker. For larger or recurring lists, see bulk email verification, list cleaning and pricing.

Check your list now

Paste your company domains into the bulk dead company website checker.