Yes. You can verify any @Sina.com address in real time with a direct SMTP handshake that provides 99.7% accuracy. Sina.com is operated by Sina Corp, runs 3 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.
sina.com publishes 3 MX records. The primary mail exchanger is freemx3.sinamail.sina.com.cn, hosted by com.cn, 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 | freemx3.sinamail.sina.com.cn | 36.51.224.198 | Reachable |
| 10 | freemx1.sinamail.sina.com.cn | 36.51.224.198 | Reachable |
| 10 | freemx2.sinamail.sina.com.cn | 36.51.224.198 | Reachable |
220 mx-97-57.mxsmail.fmail.bdx.sinanode.com ESMTPYes. sina.com is a valid email provider, operated by Sina Corp. 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 Sina.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 sina.com mailboxes before you mail them.
Mistyped sina.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 sina.com addresses raises every rate that matters: opens, clicks, and replies.
Sina.com is Sina Corp, registered through Xin Net Technology Corporation and first seen Sep 15, 1998.
sina.com is a major Chinese email service operated by Sina Corporation, one of China's leading online media companies headquartered in Beijing. Sina provides free email alongside news, blogging (Weibo), and entertainment services to Chinese-speaking users worldwide.
sina.com implements SPF and DKIM authentication. Sina maintains anti-spam infrastructure and operates under Chinese data protection regulations.
The sina.com mail servers enforce recipient verification and reject invalid addresses. The domain does not operate as catch-all. Rate limiting applies, particularly from international senders.
When sending to sina.com, authenticate with SPF and DKIM. International senders may face additional filtering when delivering to Chinese email platforms.
Upload a CSV or TXT list of Sina.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 Sina.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, sina.com is a valid free email domain operated by Sina Corp. It provides permanent email accounts to users.
No, sina.com is not a disposable or temporary email provider. It offers permanent email accounts with standard email features.
sina.com uses mail servers operated by Sina Corp. 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 sina.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 sina.com's mail servers, the same engine that has verified billions of addresses since 2012.
Other free email provider domains we have audited.