Yes. You can verify any @163.com address in real time with a direct SMTP handshake that provides 99.7% accuracy. 163.com is operated by NetEase Inc., runs 4 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.
163.com publishes 4 MX records. The primary mail exchanger is 163mx01.mxmail.netease.com, hosted by netease.com, 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 | 163mx01.mxmail.netease.com | 103.129.252.43 | Reachable |
| 10 | 163mx02.mxmail.netease.com | 154.18.236.98 | Reachable |
| 10 | 163mx03.mxmail.netease.com | 47.251.242.178 | Reachable |
| 50 | 163mx00.mxmail.netease.com | 47.88.35.114 | Reachable |
220 163.com Anti-spam GT for Coremail System. ESMTP readyYes. 163.com is a valid email provider, operated by NetEase Inc.. 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 163.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 163.com mailboxes before you mail them.
Mistyped 163.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 163.com addresses raises every rate that matters: opens, clicks, and replies.
163.com is NetEase Inc., registered through MarkMonitor Information Technology (Shanghai) Co., Ltd. and first seen Sep 15, 1997.
163.com is NetEase's flagship free email platform and one of the most widely used email services in China. Headquartered in Hangzhou, NetEase Inc. launched 163.com as China's first free email provider and it remains a dominant force in the Chinese email market, offering large mailbox storage, spam filtering, and full mobile support.
163.com supports SPF, DKIM, and DMARC authentication for outbound messages, helping recipients verify that emails genuinely originate from 163.com accounts. Given its massive user base, 163.com addresses are frequently encountered in both legitimate business communication and, unfortunately, spam campaigns targeting international recipients.
The 163.com mail servers use strict recipient verification and will immediately reject messages sent to invalid addresses. The platform does not function as a catch-all system. NetEase enforces significant rate limiting on inbound SMTP connections, particularly from IP addresses without established sending reputation.
For reliable delivery to 163.com inboxes, senders should authenticate all outgoing mail with SPF and DKIM, maintain a positive sender reputation, and ensure their IP addresses are not listed on major blocklists. Avoid sending large batches of email to 163.com addresses in short bursts, as this may trigger temporary deferrals or blocks.
Upload a CSV or TXT list of 163.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 163.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, 163.com is a valid free email domain operated by NetEase Inc.. It provides permanent email accounts to users.
No, 163.com is not a disposable or temporary email provider. It offers permanent email accounts with standard email features.
163.com uses mail servers operated by NetEase Inc.. Check the MX records section above for specific server details.
Yes, with proper opt-in consent. Follow email best practices and ensure SPF, DKIM, and DMARC authentication is configured for your sending domain.
Use BulkEmailChecker to verify 163.com addresses via SMTP checks. Verification behavior varies by provider. Our tool handles provider-specific rate limiting automatically.
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 163.com's mail servers, the same engine that has verified billions of addresses since 2012.
Other free email provider domains we have audited.