BillionVerify 帮助中心
快速了解验证结果、计费方式以及 BillionVerify 的工作原理。
关于 BillionVerify 的常见问题
了解各类结果的含义、何时扣除积分，以及邮箱验证的工作方式。
13 个答案
What do the verification statuses mean? (valid, invalid, catch-all, unknown, disposable, role)
Understand valid, invalid, catch-all, unknown, disposable, and role results, including which outcomes use credits.
服务商限制Why are iCloud (icloud.com / me.com / mac.com) addresses not marked "valid"?
Learn why iCloud, me.com, mac.com, and Hide My Email addresses return unknown instead of valid.
服务商限制Why are Outlook / Hotmail / Live addresses not marked "valid"?
Learn why personal Microsoft addresses return unknown and how Microsoft 365 business domains differ.
验证结果What does an "unknown" result mean, and what should I do with it?
Unknown means the receiving mail system did not provide a reliable answer; it does not mean the address is bad.
验证结果Why is an address marked catch-all instead of valid?
Catch-all means the domain accepts every recipient without confirming whether the specific mailbox exists.
验证结果Why was an address I believe is active marked "invalid"?
Invalid is based on a concrete rejection from the receiving server, not a guess about the mailbox.
验证结果What does the "score" in the result mean?
The 0.0–1.0 score reflects deliverability confidence and should always be read together with the status.
验证结果Why did my result change when I re-verified the same address?
Cached results and temporary mail-server conditions can explain why a later verification returns a different status.
计费与积分Which results consume credits?
See which verification outcomes cost one credit and which results are always returned free of charge.
计费与积分Do you charge for disposable / temporary email addresses?
Disposable-domain detection is free unless you explicitly request and complete a full live SMTP verification.
计费与积分Am I charged again if I verify the same address twice?
Repeat checks for the same account and address are free within 24 hours unless you request a force refresh.
计费与积分Do my credits expire?
Purchased and bonus credits stay in your account until you use them, with no monthly reset or expiration date.
信任与隐私Does verification send a real email to the address?
Verification checks the receiving mail server but stops before transmitting any message body to the recipient.
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