Bulk email website placeholder detector: which addresses are at placeholder sites?
In short: Paste email addresses and see which sit at a domain showing a default server page, a coming-soon or under-construction notice or an almost empty page, with the signal in the CSV. Limit: Reads the domain, never the mailbox: a placeholder signal says nothing about a particular address.
A bulk email website placeholder detector reads the domain after the @ in each address and requests its home page once, looking for a default server page, coming-soon or under-construction wording, or a page with almost no content. Paste up to 100 unique domains a run, or 500 signed in. It checks the domain, not the mailbox. Download the CSV.
Placeholder sites out? Check the mailboxes on the rest.
Price: this tool is free. Checking a whole email list is from $9/mo, and the first 100 checks are free with Google, no card. Check your list free nowSee pricing
Sample result
tom@globex.example is at a domain whose home page is a default server page.
- Address
- tom@globex.example
- Domain
- globex.example
- Signal
- Default server page
What this means for you
A default page often means nobody is running the domain. A real business can carry those words in a banner, so it is a signal.
- Default pages and coming-soon notices
- The signal named on each row
- Flagged addresses filtered in one click
- CSV out, nothing emailed
- Placeholder
- Home page
- CSV
By SimpleVerifier Team · Last updated
Got a list with addresses at domains nobody seems to be running?
- Paste it above to find the addresses at placeholder sites, with a CSV of every row.
- Upload or paste it at /verify. Every address gets a live mailbox check, and the first 100 email checks are free with a Google sign-in, no card.
How do I find email addresses at placeholder websites?
- Paste email addresses, one per line, or upload a CSV. Addresses are found anywhere in the text, so a whole export works.
- Press Find placeholder pages. Only the unique domains are sent, never the mailbox names, 10 a request: each home page is requested once from our server. No mail is sent.
- Read each row: Looks like a placeholder or No placeholder signal, with the signal that matched.
- Filter to the flagged addresses, download the CSV, and hand the rest to the mailbox check.
Example
- You enter
- Three addresses:
jane@acme.example(a working company site),tom@globex.example(a default server page) andana@initech.example(a page that says coming soon). - You get
- jane: No placeholder signal. tom: Looks like a placeholder, naming the default page. ana: Looks like a placeholder, naming the wording. Download the CSV.
- Limits
- Up to 100 unique domains a run without an account and 500 when signed in with Google. 10 domains a request; one request to each home page.
What counts as a placeholder signal?
Three things in the first 128 KB of the home page: a default server page, coming-soon or under-construction wording, or a page with almost no content. Each row names the one it found.
None is proof. A real business can carry those words in a banner, and a site built by JavaScript shows little text to this check.
Why does it matter on an email list?
A domain whose home page is a default page or a coming-soon notice has often never had a site, or has lost it. The addresses at it tend to belong to a business that is not running, or to a domain bought and left idle. Finding them by domain is cheap, because a list of thousands of addresses has far fewer unique domains.
To run the same check on bare domains, use the bulk website placeholder detector.
What do you do with the flagged rows?
Look at the company by name before you drop it: a new business may simply not have built its site yet, and its mailboxes may work. To see which domains are parked or for sale, use the bulk email parked domain checker.
Before you email anyone on the rest, verify the addresses.
Who uses this tool, and for what?
- Marketers
- Drop addresses at domains that show only a default page before an import.
- Sales teams
- Skip companies whose domain shows a coming-soon notice.
- Agencies
- Flag client-list addresses at domains with no real site.
- Developers
- Triage a signup export for addresses at idle domains.
What can’t this tool tell you?
- Reads the domain, never the mailbox: a placeholder signal says nothing about a particular address.
- Signals from the page's HTML, not certainties; a site drawn by JavaScript shows few of them.
- Only the home page is read, once per domain, from our server, up to 128 KB.
- Up to 100 unique domains a run without an account, 500 signed in. Free providers such as gmail.com are looked up like any domain.
Common questions
- How do I find email addresses at placeholder websites?
- Paste the list into a bulk email website placeholder detector like this one. It reads each address's domain and looks at its home page for a default page, coming-soon wording or almost no content.
- Is this bulk email website placeholder detector free?
- Yes. It is a free tool: up to 100 unique domains a run with no account, and up to 500 a run when you sign in with Google, with no card.
- Does it tell me whether the mailbox exists?
- No. It checks the domain, not the mailbox. A placeholder site can sit above working mailboxes.
- Is a placeholder page proof the company is not running?
- No. A new business may not have built its site yet, and a banner can carry coming-soon wording on a real site. Look at the company by name first.
- Why does a site built with JavaScript show no signal?
- The check reads the HTML the server sends, up to 128 KB. A page drawn by JavaScript shows little text there.
- Does it send an email to the domain?
- No. It requests each home page once. It never connects to a mail server.
Sources
A tidy list can still be full of dead addresses.
Extracting, deduplicating and syntax checks all work on the text of an address. None of them can tell whether the mailbox exists. Only the server that hosts it can answer that, through an SMTP check, and that is what the paid product does.
- Upload the cleaned file as it is: CSVs up to 100,000 rows
- A real SMTP mailbox check on every row, with catch-all detection
- Small list? Starter at $9/mo covers 2,500 emails a month, cancel anytime
Plans from $9 a month, cancel anytime, no contract. Sign in with Google and your first 100 email checks are free, no card. The free tools stay free either way.