Catch-all report
Is zoom.us a catch-all domain?
This report shows the mail configuration for zoom.us and runs a live catch-all probe. A catch-all (accept-all) domain accepts mail for every address, which makes verifying individual zoom.us mailboxes less certain.
Test a domain for catch-all
This opens one SMTP conversation with the domain's mail server and asks whether a random mailbox is accepted. Many networks block outbound port 25, so a single check can be inconclusive.
Catch-all domains need smarter verification
On a catch-all domain, the server accepts everything, so SMTP alone cannot tell a real mailbox from a typo. Verifly combines multiple signals and flags catch-all addresses so you can decide how to send.
Verify a whole list with 100 free creditsMail configuration for zoom.us
zoom.us accepts mail through 2 MX hosts and appears to run on Proofpoint.
| Priority | Mail server (MX) |
|---|---|
| 10 | mxa-00569201.gslb.pphosted.com |
| 10 | mxb-00569201.gslb.pphosted.com |
What catch-all means for zoom.us
When a domain is catch-all, its server returns a 250 OK for any recipient — ceo@zoom.us, sales@zoom.us, or pure gibberish alike. That is convenient for the domain owner (typos still arrive) but it removes the signal a verifier relies on: acceptance no longer proves the mailbox exists.
The right way to treat a catch-all zoom.us address is as a middle tier — riskier than a confirmed mailbox, safer than a hard-invalid or disposable one. Verifly returns a dedicated is_catch_all flag so you can decide how aggressively to send instead of guessing.
FAQ — zoom.us catch-all & verification
- Is zoom.us a catch-all domain?
- A domain is catch-all when its mail server accepts mail for any address, including ones that do not exist. Run the live probe above to test zoom.us right now — it opens one SMTP conversation and asks the server whether a random, non-existent mailbox is accepted.
- What are the MX records for zoom.us?
- zoom.us routes mail through: mxa-00569201.gslb.pphosted.com, mxb-00569201.gslb.pphosted.com. This indicates the domain uses Proofpoint.
- Why does catch-all matter when verifying zoom.us addresses?
- On a catch-all domain an SMTP accept does not prove a specific mailbox exists — the server says yes to everything. So a verifier cannot promote a catch-all address to "valid" on acceptance alone; it should flag it separately, which Verifly does.
- How do I verify zoom.us emails in bulk?
- Use the Verifly API: GET https://verifly.email/api/v1/verify?email=name@zoom.us with a Bearer key returns a dedicated catch-all flag alongside syntax, MX, disposable and role signals. 100 free credits, no monthly fee.
Verify zoom.us emails at scale
The Verifly API returns catch-all, disposable, role and SMTP signals in one call — pay-as-you-go, 100 free credits, no monthly fee.