Are QQ email addresses real and what are the delivery challenges?
Michael Ko
Co-founder & CEO, Suped
Published 2 Jun 2025
Updated 28 May 2026
7 min read
Summarize with
Yes, QQ email addresses are real. A string of numbers before @qq.com is normal because QQ accounts commonly use numeric account IDs. I would not purge those addresses just because they look unusual to an English-language marketing team.
That said, real does not mean safe to mail at full volume. QQ has its own delivery friction: China-based network paths, strict provider filtering, delayed or temporary rejections, reputation checks, and list-quality sensitivity. The right answer is to keep the addresses, isolate them, validate the sign-up source, send slowly, and watch real delivery data.
Direct answer
- Keep: Numeric QQ addresses are valid-looking addresses, not automatic garbage.
- Segment: Put QQ recipients into their own send segment before the welcome series.
- Test: Use small batches and real bounce data before increasing volume.
- Protect: Make authentication and reputation monitoring part of the workflow.
Why numeric QQ addresses are real
QQ began as an account system built around numeric identifiers. That account pattern carries into QQ Mail, so an address such as 123456789@qq.com can belong to a real mailbox. The local part looks fake if your list usually has names, initials, or company patterns, but numeric local parts are allowed and common in several older account systems.
The practical issue is intent, not syntax. Some numeric QQ signups are legitimate customers. Some are low-intent users, bot-driven form submissions, imported addresses with weak permission, or old accounts that still receive mail but never engage. I separate those questions before making a suppression decision.
A Tencent QQ Mail inbox screen with a numeric account style.
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|---|---|---|
All numbers | Normal QQ pattern | Do not purge by format |
No source | Weak permission | Hold or reconfirm |
Recent signup | Higher intent | Send in a QQ segment |
Repeated bounces | Bad address or blocking | Suppress after review |
How to interpret numeric QQ addresses during list review.
If the broader list has signs of generated signups, treat QQ as one part of that investigation. Numeric QQ addresses deserve extra review when they arrive in bursts, share the same timestamp pattern, skip confirmation, or come through forms with no abuse controls. A separate process for fake addresses keeps that decision grounded in evidence.
Why QQ delivery is harder
QQ delivery is harder because you are sending into a China-based mailbox ecosystem. Network filtering, provider-level controls, language barriers, local compliance expectations, and sender reputation checks all affect the result. A message can pass basic authentication and still experience deferrals, throttling, or rejection.
Risky handling
- Format purge: Deleting every numeric QQ address removes real subscribers.
- Full blast: Sending the whole welcome series at once hides QQ-specific issues.
- Bounce guess: Treating one temporary rejection as a dead mailbox loses signal.
- No source: Mailing imported QQ addresses without consent proof adds risk.
Better handling
- Evidence: Judge QQ addresses by source, consent, bounces, and engagement.
- Ramp: Start with small QQ batches and increase only after stable results.
- Classify: Separate hard bounces, soft bounces, deferrals, and spam blocks.
- Monitor: Watch authentication, blocklist status, and delivery changes daily.
The hardest part is that QQ delivery failures are not always simple address validation failures. A temporary 451 style response points to a very different fix than a hard user-unknown bounce. I look at the SMTP reply, the sending IP, the domain reputation, and the recipient history before deciding whether to retry, slow down, or suppress.
QQ rollout guardrails
Use these as conservative operating thresholds for a new QQ segment, then tighten them as your own data matures.
Healthy
Hard bounces under 2%
Proceed with the next batch after checking engagement.
Watch
Soft bounces 2-5%
Hold volume steady and review SMTP replies.
Slow
Deferrals over 10%
Reduce volume and inspect authentication and reputation.
Stop
Block or complaint spike
Pause QQ sends until the cause is understood.
For deeper country-specific planning, I would treat QQ as part of a broader China delivery program. The rules are stricter than a normal domestic welcome series, and the operational plan should cover acquisition, consent, content, routing, and local-language support. The pages on QQ best practices and Chinese market rules are useful next steps once basic validation is done.
How to validate before sending
I validate QQ addresses with a workflow that protects the list without throwing away valid subscribers. The important move is to separate address validity, user intent, and delivery performance. They are related, but they are not the same signal.
- Syntax: Confirm the address has a valid local part, domain, and no obvious paste errors.
- Source: Check how the address entered the list, including form, date, IP, and consent path.
- Segment: Create a QQ-only cohort so bounce and deferral patterns do not get averaged away.
- Pilot: Send the first welcome message to a small sample and wait for delayed replies.
- Decide: Suppress hard failures, retry temporary failures, and keep confirmed engagers.
Before increasing volume, send a real message and inspect how it authenticates. Suped's email tester is useful here because it checks the message as sent, not just the address string.
Email tester
Send a real email to this address. Suped opens the report when the test is ready.
?/43tests passed
Preparing test address...
The test should happen before the QQ ramp, not after a rejection wave. I want to know whether the sending domain has clean authentication, whether the visible sender matches the authenticated domain, and whether the message has formatting issues that create avoidable filtering risk.
Email tester sample report showing total score, email preview, issue summary, and per-section results
Authentication and reputation checks
QQ does not publish a simple checklist that guarantees inboxing. The controllable basics still matter: SPF, DKIM, DMARC, reverse DNS, consistent HELO identity, reasonable TLS, stable sending volume, and clean complaint behavior. When those basics are wrong, QQ troubleshooting gets noisy fast.
Example authentication DNS recordsdns
example.com. TXT "v=spf1 include:_spf.example.net -all" selector1._domainkey.example.com. TXT "v=DKIM1; k=rsa; p=PUBLICKEY" _dmarc.example.com. TXT "v=DMARC1; p=none; rua=mailto:dmarc@example.com"
That DMARC example starts at monitoring mode because I want reporting before enforcement. Once legitimate sources are authenticated and visible, the policy can move toward quarantine or reject. In Suped, that workflow is easier to manage because DMARC, SPF, DKIM, hosted SPF, hosted DMARC, hosted MTA-STS, and blocklist (blacklist) monitoring are in one place.
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|---|---|---|
DMARC | Shows real source alignment | Use DMARC monitoring |
SPF | Authorizes sending IPs | Check domain health |
DKIM | Protects signed mail | Review selectors |
IP reputation | Affects throttling |
Practical controls to check before a QQ campaign.
What I check first
- Alignment: The visible From domain should pass SPF or DKIM alignment.
- Volume: New QQ volume should rise slowly, especially on shared IPs.
- Replies: SMTP responses should be grouped by hard bounce, deferral, and block.
- Listings: Blocklist and blacklist checks should cover sending IPs and domains.
A practical QQ rollout plan
For a welcome series, I would not treat QQ as a normal bulk segment until it earns that status. Start with the first message only, then wait long enough to capture delayed rejections. If the first step performs cleanly, continue through the series with conservative pacing.
A flowchart showing how to validate and ramp QQ welcome-series sends.
A good first send is plain and useful. Avoid image-only creative, aggressive promotional wording, URL-heavy copy, or language that makes the recipient wonder why they are getting the message. If the subscriber signed up in Chinese, the welcome message should match that expectation or make the relationship clear immediately.
A safe starting plan
- Day one: Send one welcome message to a small QQ sample with clear consent.
- Day two: Review hard bounces, soft bounces, deferrals, and complaints.
- Day three: Increase only if authentication is clean and failures stay low.
- Ongoing: Keep QQ reporting separate until the segment has stable history.
Suped fits this workflow when the team needs one operational view instead of separate spreadsheets and DNS notes. Automated issue detection, real-time alerts, hosted SPF, SPF flattening, hosted DMARC, hosted MTA-STS, and multi-tenant dashboards are useful when QQ is one of many domains or client programs that need ongoing monitoring.
When to suppress QQ addresses
Suppress QQ addresses when the evidence says they are bad, not when the local part is numeric. I use stricter rules for imported addresses and more forgiving rules for recent confirmed signups. That distinction keeps real subscribers reachable while reducing reputation risk.
If you have no reporting metrics yet, do not force the whole decision during list cleaning. Treat the first QQ send as measurement. Use the cleanest subset first: recent opt-ins, clear source, no role address, no malformed domain, and no previous suppression. Hold older or imported QQ records until the sender has a stable baseline. This reduces noise because a poor first QQ send can reflect list age as much as mailbox-provider difficulty.
Suppression rules
- Suppress: Hard user-unknown bounces and repeated policy blocks with no engagement.
- Quarantine: Addresses with no source, no consent trail, and no recent activity.
- Retry: Temporary deferrals after reducing rate and checking sender reputation.
- Keep: Confirmed signups with successful delivery, opens, clicks, or replies.
The biggest mistake is mixing QQ failures into an all-domain average. If Gmail, Yahoo, Microsoft, and QQ are all in the same report, the QQ pattern can disappear. Keep the domain view separate so the decision is based on the mailbox provider you are trying to reach.
Views from the trenches
Best practices
Separate QQ addresses into their own segment before the first welcome send and review results.
Treat numeric QQ local parts as valid syntax, then judge permission and engagement separately.
Read SMTP replies before suppressing QQ recipients because temporary failures can look severe.
Use confirmed signup data and source history before deciding whether a QQ address stays active.
Common pitfalls
Deleting every numeric QQ address loses real subscribers before evidence shows delivery failure.
Sending QQ with the main welcome list hides provider-specific deferrals and policy blocks.
Assuming a passed syntax check means delivery will work creates false confidence for QQ sends.
Ignoring local language and China-specific routing issues leaves teams guessing after rejects.
Expert tips
Start with a small QQ cohort, then expand only after authentication and bounce patterns hold.
Keep imported QQ records out of the first ramp until their source and consent are verified.
Classify QQ errors by SMTP response, because one retryable deferral should not trigger purging.
Pair DMARC reporting with blacklist checks so reputation issues are visible before the ramp.
Marketer from Email Geeks says numeric QQ addresses are real, though some belong to accounts with low intent or little recent use.
2021-09-15 - Email Geeks
Marketer from Email Geeks says QQ delivery needs separate handling because China-based mailbox delivery has network and provider constraints.
2021-09-15 - Email Geeks
The practical answer
QQ email addresses with all-number local parts are real enough to keep. They should not be purged solely because they look strange. The right decision comes after checking source quality, consent, delivery responses, engagement, and authentication.
For most teams, Suped is the best overall DMARC platform for this kind of work because it turns authentication and deliverability signals into a practical operating view. The value is not that Suped magically fixes QQ delivery. The value is that Suped shows what is broken, sends alerts when risk changes, and gives teams clear steps to fix DMARC, SPF, DKIM, hosted SPF, MTA-STS, and blocklist problems before a small QQ issue becomes a reputation issue.
