Interia email checker: does this interia.pl mailbox exist?
In short: Asks Interia's own mail server whether an interia.pl mailbox exists, without sending anything, after syntax, domain, disposable and role checks. Limit: A valid result shows Interia accepted the mailbox today, not that anyone reads it.
To check if an interia.pl address exists, enter it here. The checker asks Interia's mail server about the mailbox at RCPT TO, then disconnects before any message is sent. It rejected a made-up address with 550 5.1.1 Account not found / Nie ma takiego konta on 8 November 2026, so a missing mailbox comes back invalid and an accepted one valid.
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
Tuned for interia.pl. Five checks a minute, no account needed. Nothing is sent to the address — we ask its mail server whether the mailbox exists, then disconnect.
Sample result
[email protected] doesn't exist: Interia's server rejected it.
- [email protected]
- Reason
- Mailbox not found
- Mailbox check
- SMTP, nothing sent
What this means for you
Invalid means remove it; a real mailbox would come back valid.
- Asks Interia's server at RCPT TO
- Catch-all test with a random address first
- Catches typo domains with no mail server
- Flags disposable and role addresses
- Interia
- interia.pl
- Poland
By SimpleVerifier Team · Last updated
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How do I check a whole list of Interia addresses?
- Export the list as a CSV or copy the email column; Interia rows and every other domain can go in together.
- Upload or paste it at /verify. The first 100 email checks are free with a Google sign-in, no card.
- For every list after that, Pro includes unlimited email verification. Fair use: the first 100,000 checks a month at full speed, then slower, never cut off.
How do I check an Interia email address?
- Type or paste one address, such as
[email protected]. - Press Check. The tool checks the syntax and domain, asks Interia's server about a random address that can't exist, then about yours, and disconnects before anything is sent.
- Read the verdict: valid means Interia accepted the mailbox and rejected the made-up one, invalid means it said the account doesn't exist, risky means the check didn't get a clear answer.
- If it comes back risky, check again later: with Interia that is usually a cut-short check, not a bad address.
Example
- You enter
- One address:
[email protected]. - You get
- Valid when Interia accepts the mailbox after rejecting a random address; invalid ("Mailbox not found") when it answers
550 5.1.1 Account not found / Nie ma takiego konta; risky only when the check gets no clear answer. - Limits
- Five checks a minute per IP address, one address at a time, no account needed.
How do I check if an interia.pl address exists without emailing it?
Ask Interia's mail server instead of the mailbox. On 8 November 2026 interia.pl published one MX host, mx.interia.pl. That day a made-up interia.pl address got 550 5.1.1 Account not found / Nie ma takiego konta (Polish for "there is no such account") at RCPT TO through this checker.
So a single Interia mailbox can be confirmed: a rejection comes back invalid ("Mailbox not found") and an acceptance valid. This is one check on one day; we have no earlier observation for this domain.
Why do interia.pl addresses go dead?
Interia's mail terms, in force since 29 July 2026 and linked from its help page, let INTERIA.PL delete the mail stored in an account after more than 366 days without a login. They also let it give notice on the account by email; the notice takes effect if there is still no login for more than 366 days, and a login in that time cancels it.
So an interia.pl contact that hasn't logged in for a couple of years may be closed. Re-check Polish lists before a campaign, for example with the bulk verifier. The Onet email checker, WP email checker and o2.pl email checker cover the other big Polish webmail domains.
What can this checker confirm at Interia?
Each row is something the check runs on an Interia address, and the result you can get from it.
| Check | Can we confirm it? | Result when it fails |
|---|---|---|
| Syntax (the address is written correctly) | Yes | Invalid |
| Domain and mail server (MX) | Yes | Invalid, with a typo suggestion where one fits |
| Disposable or role address | Yes | Invalid (disposable) or risky (role) |
| The mailbox exists | Yes: Interia answers at RCPT TO (550 5.1.1 Account not found) | Invalid, "Mailbox not found" |
| A temporary reply or timeout | No answer to read | Risky, worth checking again later |
| Someone reads the inbox | No checker can | Use opens, replies or a small first send |
Our checking server offered a made-up address and disconnected without sending, through this checker on 8 November 2026; earlier checks are dated in the text.
Who uses this tool, and for what?
- Polish shops and newsletters
- Drop closed interia.pl mailboxes before a campaign.
- Support teams
- Catch a mistyped address, or a typo domain like interia.pll, before you reply.
- Lead buyers
- Confirm a handful of Polish webmail contacts before paying for or importing a list.
What can’t this tool tell you?
- A valid result shows Interia accepted the mailbox today, not that anyone reads it.
- A temporary reply or a refused connection comes back risky, not invalid.
- Interia doesn't publish how its servers answer mailbox checks; the handling here is from one check on 8 November 2026, which can change.
- One address at a time, five a minute.
Common questions
- How do I check if an interia.pl email address is valid?
- Enter it here. The checker confirms the syntax and mail server, then asks Interia's server about the mailbox without sending. Interia rejected a made-up address on 8 November 2026, so a missing mailbox comes back invalid.
- Does Interia delete inactive mailboxes?
- Interia's terms let it delete the mail stored in an account after more than 366 days without a login, and end the account if there is still no login for more than 366 days after it emails a notice.
- What does Nie ma takiego konta mean?
- It is Polish for "there is no such account". Interia's server sends it with 550 5.1.1 when the mailbox doesn't exist. Treat it as a hard bounce and remove the address.
- Who runs Interia Poczta?
- INTERIA.PL sp. z o.o. in Kraków, according to its mail terms. On 8 November 2026 the interia.pl MX host was mx.interia.pl.
- Is this checker free?
- Yes, five checks a minute with no account. For a whole list, sign in with Google for 100 free email checks, no card, or use a monthly plan.
Sources
That was one address. Most people have a list.
The free checker does five addresses a minute, one at a time — fine for spot-checking, useless for a CSV of 40,000.
- Upload a CSV up to 100,000 rows
- Valid, risky and invalid exported as separate files
- Repeat checks free for 14 days, no new connections
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.