Yes. You can verify any @Gmx.com address in real time with a direct SMTP handshake that provides 99.7% accuracy. Gmx.com is operated by 1&1 Mail & Media, runs 2 mail servers, enforces 2 of 3 authentication standards, and is currently responding to SMTP.
Every check returns one of three clear outcomes so you know exactly what to do with the address.
The mailbox exists and accepts mail. Send with confidence, the address is deliverable.
The mailbox does not exist, is disposable, or will hard-bounce. Remove it to protect your sender reputation.
The server is catch-all or greylisting, so existence cannot be confirmed. Send selectively and watch engagement.
gmx.com publishes 2 MX records. The primary mail exchanger is mx00.gmx.net, hosted by gmx.net, and it is currently reachable and answering SMTP. Mail is routed through these servers in priority order, lowest number first.
| Priority | Hostname | IP | Status |
|---|---|---|---|
| 10 | mx00.gmx.net | 212.227.15.10 | Reachable |
| 10 | mx01.gmx.net | 213.165.67.123 | Reachable |
220 gmx.net (mxgmx008) Nemesis ESMTP Service readyYes. gmx.com is a valid email provider, operated by 1&1 Mail & Media. Addresses are persistent and real mail reaches a genuine recipient. Individual mailboxes still go stale, so verify each one before you send.
A live SMTP handshake connects to Gmx.com's mail server and asks whether the mailbox exists using the RCPT TO command, without ever transmitting a message. The recipient never sees the check.
Each address runs through 30+ checks including SMTP existence, catch-all detection, role-account filtering, and disposable matching. The same engine has verified billions of addresses since 2012.
Every unverified address is a gamble. Here is what happens when you skip verification and mail a list that has not been cleaned.
Free inboxes get abandoned constantly. Verification drops the dead gmx.com mailboxes before you mail them.
Mistyped gmx.com addresses fail a real SMTP check, so they never turn into a hard bounce.
A clean list keeps your bounce rate low, and a low bounce rate is what protects inbox placement on a big send.
Mailing only live gmx.com addresses raises every rate that matters: opens, clicks, and replies.
Gmx.com is 1&1 Mail & Media, registered through World4You Internet Services GmbH and first seen May 7, 1994.
gmx.com is a global free email service operated by 1&1 Mail and Media GmbH, part of United Internet AG headquartered in Montabaur, Germany. GMX (Global Mail eXchange) offers free and premium email with large attachment support, cloud storage, and spam filtering.
gmx.com implements SPF, DKIM, and DMARC for outbound messages. United Internet maintains strong anti-spam infrastructure across its email brands including GMX and WEB.DE. The service complies with EU GDPR standards.
The gmx.com mail servers enforce strict recipient verification and reject invalid addresses. The domain does not operate as catch-all. Rate limiting and reputation checks apply to inbound connections.
When sending to gmx.com, authenticate with SPF, DKIM, and DMARC. GMX applies thorough content analysis and sender reputation scoring. Maintain low bounce and complaint rates for optimal deliverability.
Upload a CSV or TXT list of Gmx.com addresses to the bulk email verifier. Every address runs through a live SMTP handshake plus catch-all, role-account and disposable detection, and you download a clean list when processing completes. For real-time checks at signup, use the real-time email verification API.
CSV or TXT with one email per line. No formatting needed.
Each Gmx.com address is checked with a live server handshake.
Get a verified list with status codes, risk flags, and catch-all detection.
Pay as you go. No subscriptions, and credits never expire.
Everything about verifying email at this domain.
Yes, gmx.com is a valid and active email domain operated by 1&1 Mail & Media, part of United Internet AG. GMX (Global Mail eXchange) has been providing free email since 1997.
No, gmx.com is not a disposable email provider. It is a permanent free email service popular in Europe, especially Germany, and offers full-featured email accounts with generous storage.
GMX uses 1&1 Mail & Media infrastructure. MX records point to mx00.1and1.com and mx01.1and1.com, shared with mail.com and other United Internet email brands.
Yes, marketing emails can be sent to GMX addresses with proper consent. GMX uses reputation-based spam filtering. Proper SPF, DKIM authentication improves deliverability to GMX inboxes.
GMX addresses can be verified via SMTP checks with reliable accept/reject responses for valid and invalid addresses. The service does not use catch-all, making verification straightforward.
Upload a CSV or TXT list to the bulk email verifier. Every address runs through 30+ checks including SMTP existence, catch-all detection, role-account, and disposable matching. Processing time depends on list size.
99.7% accurate using a direct SMTP handshake with gmx.com's mail servers, the same engine that has verified billions of addresses since 2012.
Other free email provider domains we have audited.