How to Time the Websites Behind an Email List
To time the websites behind an email list, time one request to the home page of the domain after the @ in each address and label it fast, moderate or slow. The bulk email website response time checker does this for every address in a pasted list or CSV and gives each one a row.
The check reads the domain, not the mailbox.
Why check this on an email list
A company site that takes several seconds to answer is sometimes a site on neglected hosting. It is a hint, not proof, and a domain used only for mail often has no website at all. A list of thousands of addresses has far fewer unique domains, so timing one home page per domain is cheap.
The by-hand way
- Take the domain after the @, for example
acme.examplefromsam@acme.example. - Time a request to its home page, for example with
curl -o /dev/null -s -w '%{time_total}' https://acme.example. - Note redirects, which add to the time.
- Repeat for every unique domain.
For a plain list of websites, see check website response time for a list of companies.
Step 1: paste the addresses
Paste addresses one per line, or upload a CSV. Only the unique domains are sent, never the mailbox names.
Step 2: run the check
Press Time the websites. One timed GET of each home page is made from our server (https first, then http, up to five redirects, the first 128 KB), with no cookies and nothing stored. No mail is sent.
Step 3: read the result
| Result | What it means |
|---|---|
| Fast (under 1 s) | The home page answered in under one second |
| Moderate (1 to 3 s) | It answered in one to three seconds |
| Slow (over 3 s) | It took over three seconds |
| HTTP error / No answer / Not checked | The page could not be timed; some sites refuse automated requests |
The CSV carries the time and the final site address beside each email. No address is dropped from the list handed on to the mailbox check.
What this check cannot do
- It checks the domain, not the mailbox.
- One reading from our server varies between runs and is not what a visitor sees.
- A domain used only for mail often has no website.
- Up to 100 unique domains a run without an account, 500 signed in.
To time a plain list of websites use the bulk website response time checker.
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 response time checker at simpleverifier.com.
Common questions
How do I time the websites behind an email list?
Take the domain after the @ in each address and time a request to its home page. A bulk email website response time checker does that for every address in a pasted list.
Does a slow website mean the mailbox is gone?
No. The tool checks the domain, not the mailbox.
How accurate is one reading?
It is one request from our server, so it varies between runs. Use it to sort, not to benchmark.
Does it send an email to the domain?
No. It makes one GET of the home page and never connects to a mail server.
Check your list before you send
Real mailbox checks over SMTP, and nothing is sent to the address. Sign in with Google and your first 100 email checks are free, no card. Plans for bigger lists are on the pricing page.