Citromail email checker: does this citromail.hu mailbox exist?
In short: Asks the mail server behind Citromail whether a citromail.hu mailbox exists, without sending anything, after syntax, domain, disposable and role checks. Limit: A valid result shows the server accepted the mailbox today, not that anyone reads it or that it wasn't reissued.
To check if a citromail.hu address exists, enter it here. The checker asks the server that receives citromail.hu mail about the mailbox at RCPT TO, then disconnects before any message is sent. It rejected a made-up address with 550 5.1.1 … Recipient address rejected: User unknown in relay recipient table on 8 November 2026, so a missing mailbox comes back invalid.
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 citromail.hu. 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: Citromail'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 Citromail'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
- Citromail
- citromail.hu
- Hungary
By SimpleVerifier Team · Last updated
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How do I check a whole list of Citromail addresses?
- Export the list as a CSV or copy the email column; Citromail 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 a Citromail email address?
- Type or paste one address, such as
[email protected]. - Press Check. The tool checks the syntax and domain, asks the server about a random address that can't exist, then about yours, and disconnects before anything is sent.
- Read the verdict: valid means the server accepted the mailbox and rejected the made-up one, invalid means it said the user is unknown, risky means the check didn't get a clear answer.
- If it comes back risky, check again later: with Citromail that is usually a cut-short check, not a bad address.
Example
- You enter
- One address:
[email protected]. - You get
- Valid when the server receiving citromail.hu mail accepts the mailbox after rejecting a random address; invalid ("Mailbox not found") when it answers
550 5.1.1 … User unknown in relay recipient table; 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 a citromail.hu address exists without emailing it?
Ask the mail server instead of the mailbox. On 8 November 2026 citromail.hu published one MX host, mx.dka.mailcore.net. That day a made-up citromail.hu address got 550 5.1.1 … Recipient address rejected: User unknown in relay recipient table at RCPT TO through this checker.
"Relay recipient table" means the receiving server keeps a list of the mailboxes it accepts mail for, and the address wasn't on it. So a missing Citromail mailbox comes back invalid ("Mailbox not found") and an accepted one valid. This is one check on one day; we have no earlier observation for this domain.
Why do citromail.hu addresses go dead?
Citromail is now a paid service. Its terms, in force since 3 October 2023 and published by Inbox.com AS, say the service can only be used with an active subscription and the account is closed when the subscription runs out. The account and mailbox are deleted 90 days after closing, and 12 months after closing anyone can register a new account with the same address.
The Citromail FAQ notes that Citromail used to be free. So many old citromail.hu contacts belong to accounts that were never moved to a subscription, and some addresses may now belong to someone else. Re-check Hungarian lists before a campaign, for example with the bulk verifier; for freemail.hu addresses use the Freemail email checker.
What can this checker confirm at Citromail?
Each row is something the check runs on a Citromail 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: Citromail answers at RCPT TO (550 5.1.1 User unknown) | 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?
- Hungarian shops and newsletters
- Drop closed citromail.hu mailboxes before a campaign.
- Support teams
- Catch a mistyped address, or a typo domain like citromail.hy, before you reply.
- Lead buyers
- Confirm a handful of Hungarian webmail contacts before paying for or importing a list.
What can’t this tool tell you?
- A valid result shows the server accepted the mailbox today, not that anyone reads it or that it wasn't reissued.
- A temporary reply or a refused connection comes back risky, not invalid.
- Citromail 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 a citromail.hu email address is valid?
- Enter it here. The checker confirms the syntax and mail server, then asks the server about the mailbox without sending. It rejected a made-up citromail.hu address on 8 November 2026, so a missing mailbox comes back invalid.
- Is Citromail still free?
- No. Citromail's terms say it is a paid email service that can only be used with an active subscription, and the account is closed when the subscription ends.
- Can an old citromail.hu address be given to someone else?
- Citromail's terms say that 12 months after an account is closed, a new account can be created with the same address.
- What does User unknown in relay recipient table mean?
- The server receiving citromail.hu mail has no mailbox by that name. Treat it as a hard bounce and remove the address.
- 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.