Apple has quietly increased the number of custom domains that iCloud+ subscribers can associate with their iCloud Mail. Previously capped at three, the limit has now been raised to ten, according to Apple’s updated support documentation. This change adds to a recent upgrade, where the number of allowed mail aliases jumped from three to nine.
What iCloud+ Custom Domains Means
The custom domain feature allows iCloud+ users to replace the standard @icloud.com portion of their email address with one tied to a domain they already own (or purchase during setup). Rather than using [email protected], users can instead use [email protected]—an important perk for those wanting greater personalization or branding.
Why the Increase Matters
Prior to this update, subscribers could link up to three custom domains to their account. Now, with the ceiling raised to ten, customers have expanded flexibility to manage multiple domains—for instance, separating work and personal email or using aliases for different projects. Also, this follows the alias boost seen just a day earlier when Apple raised the number of custom iCloud Mail aliases from three to nine.
These changes were discovered in Apple’s official support documentation, which reflects the new limits.
Apple first introduced the custom domain option as part of the iCloud+ feature set several years ago, letting paid subscribers replace or augment their default iCloud email address. But until now, the custom domain usage was fairly limited. Expanding the allowance is a modest but meaningful upgrade—especially for power users who manage multiple domains or email addresses. It also fits with recent broader enhancements to iCloud and Mail, including storage and services bundling across platforms.
This change is rolling out to all iCloud+ subscribers; there’s no indication that pricing or plan tiers are being affected by the new limits. It appears to be part of Apple’s ongoing steady refinement of its services rather than a headline launch.
What this means: iCloud+ users now get more flexibility over their email identity. Having up to ten custom domains means less juggling of email accounts or aliases, better separation between personal/work use, and more control over branding or identity online. It’s a subtle but valuable upgrade, especially for users who’ve felt constrained by previous limits.
