Mailbox provider · Ziggo
How to verify a ziggo.nl email address
Can you verify @ziggo.nl addresses?
YesYes. @ziggo.nl answers mailbox checks one address at a time.
Check one address
Five checks a minute, no account needed. Nothing is sent to the address — we ask its mail server whether the mailbox exists, then disconnect.
Checking a whole list? The first 100 addresses are free, with results to download. No card.
By continuing you agree to our Terms and Privacy Policy.
The checker opens an SMTP conversation with ziggo.nl's mail server, offers a random address first to rule out a catch-all, then names your address at RCPT TO and disconnects without sending. A rejection comes back invalid ("Mailbox not found") and an acceptance valid ("Mailbox exists"). Temporary replies come back risky. It always checks the syntax, the domain's MX records, disposable domains and role addresses such as info@ first.
Mailbox existsMailbox not foundServer would not confirmZiggo addresses can be verified without sending an email. On 13 October 2026 the ziggo.nl mail server mxin10.ziggo.nl rejected a made-up recipient at the SMTP RCPT TO step with 550 MXIN501 mailbox …@ziggo.nl unknown, so a mailbox check can tell a missing ziggo.nl account from a real one.
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. See pricing
Live DNS snapshot: ziggo.nl
Checked 6 November 2026, 07:07 UTCRead from DNS at the time shown and refreshed at most once a day. MX says where mail for ziggo.nl goes; SPF and DMARC describe mail sent from it, not whether any one address exists.
- 10
mxin5.ziggo.nl - 10
mxin10.ziggo.nl
v=spf1 include:smtp.spf.ziggo.nl include:mail.ziggo.com ~allp=reject: meets the requirement and enforces it.
v=DMARC1; p=reject; sp=reject; rua=mailto:[email protected],mailto:[email protected]; ruf=mailto:[email protected],mailto:[email protected];fo=1; adkim=r; aspf=r;Look up any other domain with the MX lookup or the email provider lookup.
Ziggo at a glance
| Operated by | Ziggo B.V. and Ziggo Services B.V., the NetherlandsSource: Ziggo privacy statement (Dutch) |
|---|---|
| MX hosts | mxin10.ziggo.nl, mxin5.ziggo.nlObserved 13 October 2026 (dig MX) |
| Answer to a made-up address | 550 MXIN501 mailbox …@ziggo.nl unknown, returned at RCPT TOObserved 13 October 2026 (SMTP probe of a made-up recipient, no message sent) |
| Address rule | Addresses on the older @upcmail.nl, @home.nl, @quicknet.nl, @casema.nl, @chello.nl and @a2000.nl domains created in Mijn Ziggo stay usableSource: Ziggo help: Ziggo Mail (Dutch) |
| Inactive accounts | You cannot keep a Ziggo address after cancelling or switching provider; access to the mail continues for 6 months after cancellationSource: Ziggo help: Ziggo Mail (Dutch) |
What Ziggo's server says about a missing mailbox
The reply that matters is the one to RCPT TO, the step where the checking server names the recipient. Ziggo answered our made-up ziggo.nl address with 550 MXIN501 mailbox …@ziggo.nl unknown. A 5xx code at that step is a permanent "no such mailbox", which is the same answer a real message would get, so SimpleVerifier marks the address invalid with the reason "Mailbox not found". A 250 at the same step means the mailbox exists and comes back valid.
Before trusting a "valid", a careful verifier also offers a random address that cannot exist. Ziggo rejected ours, so ziggo.nl is not a catch-all: a 250 for your address is a real signal. Temporary 4xx replies (421, 450, 451) are about the connection, not the mailbox, and come back risky with "Server would not confirm" rather than invalid. Hard bounce vs soft bounce explains why that split matters.
Ziggo's reply carries its own code, MXIN501, followed by session details we trimmed. The 550 and the words "mailbox unknown" carry the verdict.
Ziggo mailboxes end six months after cancelling
Ziggo's help says you cannot keep your Ziggo address when you cancel or move to another provider. You keep access to your mail for six months after cancelling. A @ziggo.nl contact who has switched provider can therefore bounce within half a year.
The same page says addresses made in Mijn Ziggo on the older @upcmail.nl, @home.nl, @quicknet.nl, @casema.nl, @chello.nl and @a2000.nl domains remain usable. Treat those as the same service and ask contacts for a new address if mail starts bouncing.
Cleaning ziggo.nl addresses on a list
Because Ziggo answers honestly, ziggo.nl is one of the domains where verification removes bounces before they happen. Drop the invalid results, keep the valid ones, and re-check the risky ones later: a temporary reply on one day often turns into a clear answer the next.
A valid result only means the mailbox exists today. Addresses on an old consumer list go stale as people stop using them, so re-verify before each large send to an aged segment; how often to verify an email list gives a schedule. Upload the CSV to the verifier and download the valid, risky and invalid rows as separate files.
Common questions
- Can you verify @ziggo.nl addresses?
- Yes. @ziggo.nl answers mailbox checks one address at a time. The checker opens an SMTP conversation with ziggo.nl's mail server, offers a random address first to rule out a catch-all, then names your address at RCPT TO and disconnects without sending. A rejection comes back invalid ("Mailbox not found") and an acceptance valid ("Mailbox exists"). Temporary replies come back risky. It always checks the syntax, the domain's MX records, disposable domains and role addresses such as info@ first.
- Can I check if a ziggo.nl address exists without emailing it?
- Yes. A verifier connects to Ziggo's mail server, names the address at the RCPT TO step and disconnects before sending. On 13 October 2026 the server rejected a made-up ziggo.nl address with "550 MXIN501 mailbox …@ziggo.nl unknown", so a missing mailbox shows up as invalid and the owner receives nothing.
- What mail servers does ziggo.nl use?
- On 13 October 2026, ziggo.nl published these MX hosts: mxin10.ziggo.nl, mxin5.ziggo.nl. You can look them up yourself with the free MX lookup tool.
- Why did a ziggo.nl address come back risky instead of invalid?
- Risky means the server didn't give a permanent answer during the check, usually a temporary 4xx reply or a timeout. It isn't proof the address is bad. Check it again later; Ziggo gave a clear rejection for a missing mailbox when we tested it.
Related tools
Another provider? See every mailbox provider and what our checker does at each.
Got a list with Ziggo addresses?
Sign in with Google and the first 100 addresses are checked free: valid, risky and invalid, with the reason for each row and a file to download. No card. After that, plans start at $9/mo for 2,500 emails a month.
By continuing you agree to our Terms and Privacy Policy.