iCloud Mail is a Freemail (Apple). Across 50,895 iCloud Mail addresses verified by BounceZero between April and October 2026, 73.0% were invalid, 0.0% catch-all, 4.9% unknown and 20.0% confirmed valid. The invalid share is far above the business average.
The iCloud Mail row is all 50,895 addresses verified in the six months to October 2026; the other rows are the benchmarks from the same corpus. Risky and role results fill each row to 100%.
| Segment | Addresses | Invalid | Catch-all | Unknown | Confirmed valid |
|---|---|---|---|---|---|
| iCloud Mail | 50,895 | 73.0% | 0.0% | 4.9% | 20.0% |
| All non-freemail domains (business and ISP) | 6,514,884 | 14.5% | 2.3% | 27.0% | 32.6% |
| Business domains only (consumer ISP and freemail excluded) | 1,269,919 | 22.9% | 9.4% | 22.5% | 40.3% |
| All freemail | 1,415,154 | 17.6% | 1.1% | 2.1% | 74.0% |
Non-freemail includes consumer ISP mailboxes; a business-only cut is on the benchmarks page. Method and every other cut: Lead List Quality Benchmarks 2026. Risky and role on the iCloud Mail row: 2.0%.
Apple answers probes clearly and the confirmed-invalid share is very high, close to three in four. Two things drive it: iCloud addresses on B2B lists are often typed from memory or scraped from app-store style records, and Apple's Hide My Email feature produces throwaway relay addresses that stop working when the user disables them.
Apple issues iCloud addresses with every Apple ID, which makes them common on consumer and app-derived lists. Apple also offers Hide My Email, which creates disposable relay addresses that stop working when the user turns them off, and those relays are indistinguishable from real iCloud addresses until they bounce. Apple's mail servers answer probes clearly, so the invalid verdicts are reliable and the segment can be cleaned in one pass.
On confirmed-invalid rate, iCloud Mail ranks 3 of 29 providers in the corpus, just behind Hotmail Australia at 92.7%, ahead of Windstream at 49.6%.
On unknown rate, iCloud Mail ranks 20 of 29 providers in the corpus, just behind TPG at 5.1%, ahead of Xtra (Spark) at 3.4%.
On confirmed-valid share, iCloud Mail ranks 14 of 29 providers in the corpus, just behind Netcom at 29.1%, ahead of iiNet at 18.9%.
How to read these rates: they are BounceZero's probe outcomes on customer lists over April to October 2026, not a census of iCloud Mail mailboxes. Unknown and catch-all measure what verification could not confirm, which depends on the provider's gateway policy during the window as much as on the addresses. The lists are the ones customers chose to upload, so segments dominated by a few large uploads carry their age and source. Method and limitations: benchmarks page.
Unknown results are rare on iCloud Mail: the gateway answers probes clearly, so a result you get is a result you can act on.
73.0% confirmed invalid is far above the 14.5% business average. A list with many iCloud Mail addresses was compiled a long time ago.
Catch-all is negligible on iCloud Mail (0.0%); when this provider does return valid, the mailbox accepted the probe itself rather than a blanket accept.
Only 20.0% of iCloud Mail addresses confirmed as live mailboxes. Those few go to the primary sequence; the segment as a whole is not a cold-email segment.
Verify every iCloud address before it enters a sequence; the majority will not survive. Do not use an iCloud-heavy segment to judge a list vendor, but do treat it as a warning that the source was consumer data.
Role addresses such as info@ and sales@ make up 0.0% of iCloud Mail addresses in the corpus. Role addresses are rare here, as expected for a mailbox provider.
73.0% of 50,895 iCloud Mail addresses verified by BounceZero between April and October 2026 were confirmed invalid, against 14.5% across non-freemail domains and 17.6% across freemail.
4.9%. Unknown means the mailbox could not be confirmed either way, usually because the gateway deferred the probe. BounceZero refunds unknown results; on iCloud Mail it is rare enough to re-check once and move on.
Not in practice: 0.0% of iCloud Mail addresses returned catch-all, so a valid verdict means the mailbox exists.
20.0% confirmed valid at verification time. Keep bounces under 2% and complaints under 0.3% on the send, and re-verify the segment before every send.
Upload the file and see valid, invalid, catch-all and unknown per row, with the iCloud Mail segment against this benchmark. 100 free checks a month, unknowns refunded.
Ayoub built BounceZero's 5-stage validation pipeline, its dedicated BGP-announced IP infrastructure, and the Patroni HA PostgreSQL cluster behind every verification. Previously built high-volume email delivery infrastructure. Trained at 1337 Benguerir (École 42 network, 2019). Open-source: bgp_analyzer.
Invalid, catch-all and unknown rates per email provider and country domain, 2026
253,445 Hotmail (Outlook.com) addresses verified April to October 2026
34,790 Hotmail Netherlands addresses verified April to October 2026
64,161 iiNet addresses verified April to October 2026
7,976 .in addresses verified April to October 2026
29,328 iPrimus addresses verified April to October 2026
1,193,715 .it addresses verified April to October 2026
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