How to Check How Old an Email Address Is (What Is Actually Checkable)
You cannot check when an email address was created, but you can check when its domain was registered. A mailbox's creation date belongs to the provider and is not public. The domain age checker takes up to 10 domains, email addresses or URLs and asks each registry's own RDAP server, the successor to WHOIS, for the registration date, expiry date and registrar. Where a registry publishes no RDAP, it says the age could not be determined rather than guess.
For a Gmail or Yahoo address the domain is decades old and tells you nothing. For a company address it can.
Step 1: enter the address or domain
Enter an email address, a domain or a URL. Up to 10, one per line. The part after the @ is what gets looked up.
Step 2: read the dates
Press Check domain age. You get the age, registration date, expiry, last change and registrar for each domain. By hand, run an RDAP or WHOIS lookup on the domain and read the registration date. Download the table as CSV if you checked several.
Step 3: use it with care
| What you see | What it suggests |
|---|---|
| Registered years ago | An established domain; says nothing about the mailbox |
| Registered days ago | A new domain: real, or throwaway. Treat as a flag, not proof |
| Registration newer than your list | The domain lapsed and was registered again; old mailboxes are gone. See expired domains on an email list |
| Could not be determined | The registry publishes no RDAP; no guess is made |
Domain age is not website age, and it is not mailbox age. See domain age is not website age and domain age and lead scoring.
What this check cannot do
- It cannot say when a mailbox was created.
- Country-code TLDs without RDAP, including .io, .co and .de, return no age.
- A domain that expired and was registered again shows its newest registration date, not its first.
- It shows the current record only, with no ownership history.
To check that the mailbox exists
The creation date is not what decides whether you can email someone. Whether the mailbox accepts mail is. Check addresses 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 such as "Mailbox exists" or "Mailbox not found". For many domains at once, use the bulk domain age checker. See also bulk email verification and pricing.
Check a domain's age now
Paste it into the domain age checker.
Common questions
Can you find out when an email address was created?
Not from outside. A mailbox's creation date is private to the provider. What is public is when the domain after the @ was registered, which the registry's RDAP record gives.
How do I find out how old a domain is?
Look up its registration date in the registry's RDAP or WHOIS record. The domain age checker reads the registration, expiry and last-changed dates and works out the age.
Why does it say it could not determine the age?
Either the registry publishes no RDAP service (true of .io, .co, .de and several other country codes as of October 2026) or it returned no record. We say so rather than guess.
Does the registration date reset when a domain changes owner?
Usually not. A transfer between registrars keeps the original date. But if a domain expires, is deleted and is registered again, the registry records a new date, so an old name can show as young.
Is domain age the same as website age?
No. It is when the name was registered. The website may have gone live years later, and registries do not record that.
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.