How to Find Email Addresses at Placeholder Websites in a List

To find email addresses at placeholder websites, read each address's home page for a default server page, coming-soon wording or almost no content. The bulk email website placeholder detector does this for every address in a pasted list or CSV and gives each one a row: Looks like a placeholder or No placeholder signal, with the signal that matched.

These are signals, not certainties, and the check reads the domain, not the mailbox.

Where placeholder sites come from

Domains get bought and left idle, businesses stall before a launch, and sites lose their content when hosting lapses. The address on a list can belong to any of them. A list of thousands of addresses has far fewer unique domains, so checking by domain is cheap.

The by-hand way

1. Take the domain after the @, for example acme.example from sam@acme.example.
2. Open its home page.
3. Look for a default web server page, a coming-soon or under-construction notice, or a page with almost nothing on it.
4. Repeat for every unique domain.

For what a lapsed or parked domain does to a list, see emails to parked domains.

Step 1: paste the addresses

Paste addresses one per line, or upload a CSV. Only the unique domains are sent, never the mailbox names, 10 a request.

Step 2: run the check

Press Find placeholder pages. Each home page is requested once from our server, up to 128 KB. No mail is sent.

Step 3: read the result

Result	What it means
Looks like a placeholder	A signal was found, named in the row
No placeholder signal	None of the three signals was seen
Not checked or No answer	The page could not be read; the row says why

The CSV carries the signal text and the final URL beside each address. Flagged addresses are left out of the list handed on to the mailbox check.

What this check cannot do

• It checks the domain, not the mailbox.
• A site drawn by JavaScript shows few signals.
• Only the home page is read, once per domain.
• Up to 100 unique domains a run without an account, 500 signed in.

The same signals for bare domains are in the bulk website placeholder detector. To find domains that are parked or for sale, use find email addresses at parked domains in a list.

Next: the rest of the list

For the addresses that remain, use the verify page: the first 100 checks are free with a Google sign-in, no card.

Try it now

Paste your list into the bulk email website placeholder detector at simpleverifier.com.