iCloud Mail mailbox provider
According to Live Direct Marketing's daily Tranco top-1M scan (September 12, 2026), iCloud Mail is the mailbox provider for 432 domains — 0.06% of 665,310 domains with MX records. Detection method: primary MX record (lowest preference).
Key facts
- 432 domains in the Tranco top-1M use iCloud Mail (0.06% of domains with MX records).
- Snapshot date: 2026-09-12 — recomputed every day.
- Strongest TLD: .com (38.0% of its domains).
- Region skew: Global / US-skewed.
- Most co-used service: Cloudflare Email Routing.
- Directory category: mailbox provider.
Why iCloud Mail appears in this category
Apple iCloud mail — Custom-domain feature available with iCloud+ subscription.
We classify it as a mailbox provider from primary MX record (lowest preference) matching a maintained provider rule. This is infrastructure attribution from public DNS, not evidence of a direct contract or exclusive use.
iCloud Mail is Apple's consumer email service, available to anyone with an Apple ID. It is operated by Apple and powers mail domains such as icloud.com, me.com, and mac.com, as well as branded email for paid iCloud+ subscribers.
iCloud Mail's presence in the Tranco top-1M is concentrated in the long tail of smaller, internationally diverse websites rather than the largest global brands — predominantly .com domains with a Global/US skew. Its frequent pairing with Cloudflare Email Routing suggests that senders often encounter iCloud Mail addresses among websites that have chosen lightweight email forwarding solutions, rather than hosting dedicated mailbox infrastructure.
Where iCloud Mail sits in the Tranco ranking
| Tranco rank band | Domains | Share of its base |
|---|---|---|
| Top 1,000 | 2 | 0.5% |
| Top 10,000 | 1 | 0.2% |
| Top 100,000 | 22 | 5.1% |
| Top 1,000,000 | 402 | 93.1% |
| Unranked | 5 | 1.2% |
Top-level domain split
| TLD | Domains | Share | |
|---|---|---|---|
| .com | 164 | 38.0% | |
| .net | 34 | 7.9% | |
| .org | 19 | 4.4% | |
| .io | 16 | 3.7% | |
| .ru | 12 | 2.8% | |
| .app | 10 | 2.3% | |
| .dev | 10 | 2.3% | |
| .me | 9 | 2.1% | |
| .de | 9 | 2.1% | |
| .xyz | 8 | 1.9% |
What iCloud Mail users also use
Cross-tabulated from the same daily snapshot — the other email services seen on the same 432 domains.
| Type | Service | Domains | Share of iCloud Mail users |
|---|---|---|---|
| ESP | Cloudflare Email Routing | 12 | 2.8% |
| ESP | Amazon SES | 9 | 2.1% |
| ESP | Mailgun | 7 | 1.6% |
| ESP | Brevo (ex-Sendinblue) | 4 | 0.9% |
| ESP | MailerSend | 4 | 0.9% |
| ESP | MailerLite | 4 | 0.9% |
| ESP | Mailjet (Sinch) | 4 | 0.9% |
| ESP | Namecheap Forwarding | 3 | 0.7% |
| ESP | Mailchimp | 2 | 0.5% |
| ESP | MailChannels | 2 | 0.5% |
Cloudflare Email Routing integration and reputation implications
iCloud Mail commonly appears alongside Cloudflare Email Routing in the Tranco dataset, often as the final-hop recipient of forwarded mail from smaller domains. This pattern matters for reputation and delivery: email forwarded through Cloudflare's infrastructure arrives at iCloud Mail with the Cloudflare MX chain intact, which may influence how Apple's filters evaluate sender reputation and SPF/DKIM alignment. Senders testing deliverability should account for this relay step when diagnosing bounces or filtering issues involving iCloud Mail addresses from Cloudflare-routed domains.
See the full iCloud Mail data page (KPI cards, trend, sample domains) →
Run a free inbox-placement test across Gmail, Outlook, Yahoo and more — see exactly where your mail lands and why.
Frequently asked questions
Why do so many smaller websites use iCloud Mail alongside Cloudflare Email Routing?
Smaller sites often lack dedicated email infrastructure and choose lightweight forwarding: Cloudflare Email Routing receives mail sent to their domain and forwards it to personal inboxes (frequently iCloud Mail) without maintaining persistent mailboxes. This reduces operational overhead compared to running a mail server.
How many domains use iCloud Mail?
432 domains in the Tranco top-1M use iCloud Mail as their mailbox provider as of September 12, 2026 (0.06% of domains with MX records), according to Live Direct Marketing's daily DNS scan.
Is iCloud Mail common enough to affect email deliverability testing?
iCloud Mail accounts for 0.06% of domains with MX records in the top 1M. Whether you should seed a test mailbox there depends on how much of your audience it represents — the co-usage table above shows the services it appears alongside most.
Which countries or TLDs use iCloud Mail most?
iCloud Mail's largest TLD is .com (38.0% of its domains); it appears across 103 TLDs in total.