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A Custom Domain Email I Already Paid For: iCloud+ + Hostinger

• 5 min read • Vamsi Krishna Sethu
Table of Contents
  1. The realization
  2. How iCloud Custom Email Domain actually works
  3. Requirements
  4. The setup
  5. 1. Start in the Apple wizard
  6. 2. Clear the registrar’s default mail records
  7. 3. Add Apple’s records in Hostinger’s DNS Zone
  8. 4. Verify
  9. Wiring it into the portfolio
  10. Gotchas worth remembering
  11. The lesson

For the longest time I assumed that getting a proper hello@vamsisethu.com address meant paying for an email plan somewhere — usually the mailbox add-on your domain registrar upsells you at checkout. I already owned the domain, I had a working portfolio at vamsisethu.com, and the last missing piece felt like it needed a separate subscription.

It didn’t. I was already paying for it.

The realization

I have an iCloud+ 50GB plan — the cheap one, mostly there so my phone backups and photos stop nagging me. Sitting quietly inside that plan is a feature called Custom Email Domain. It lets you attach a domain you own to iCloud Mail and receive/send mail from addresses on that domain, using the iCloud inbox you already have.

No registrar mailbox. No second email provider. No extra monthly fee. The plan I was already paying for covered it.

The mental model that had tripped me up:

  • What I thought I needed: buy an email mailbox from Hostinger (my registrar), create hello@vamsisethu.com there, log into a separate webmail.
  • What actually happened: iCloud becomes the mailbox. I define the address, point DNS at Apple, and the mail lands in my normal iCloud inbox.

How iCloud Custom Email Domain actually works

The key thing to internalize: there is no separate mailbox to create. When you add a domain and type in the address you want, iCloud creates that address and attaches it to your existing iCloud Mail account. Incoming mail flows like this:

Someone emails  hello@vamsisethu.com
        │
        ▼
DNS MX record says "deliver to Apple"
        │
        ▼
Lands in my iCloud inbox  (same place my @icloud.com mail arrives)

You read it in the Mail app or at icloud.com/mail, signed in with your normal Apple ID. No new account, no new password.

Requirements

  • An iCloud+ subscription (any paid tier — the 50GB plan counts; the free 5GB tier does not).
  • A domain you own with access to its DNS records.
  • Up to 5 domains, and up to 3 addresses per domain.

The setup

1. Start in the Apple wizard

Go to icloud.com/icloudplus → Custom Email Domain → Add a domain you own. Enter the domain (vamsisethu.com) and the address you want to create (hello@vamsisethu.com).

Apple then hands you a set of DNS records to add. Keep that tab open — you’ll copy the exact values from it.

2. Clear the registrar’s default mail records

My domain is on Hostinger. The catch here is that Hostinger auto-creates its own MX records (pointing at mail.hostinger.com) and an SPF record. Those will fight with iCloud, so in hPanel → Domains → DNS / Nameservers I deleted:

  • the existing MX records pointing at Hostinger
  • the existing SPF TXT record (v=spf1 include:_spf.mail.hostinger.com ...)

Leftover registrar MX records are the number one reason mail “disappears” — they quietly keep stealing delivery even after you add Apple’s records.

3. Add Apple’s records in Hostinger’s DNS Zone

Hostinger’s add-record form uses Type / Name / Points to / Priority / TTL. The mapping:

TypeNameValue / Points toPriority
TXT@apple-domain=XXXXXXXXXXXX—
MX@mx01.mail.icloud.com10
MX@mx02.mail.icloud.com20
TXT@v=spf1 include:icloud.com ~all—
CNAMEsig1._domainkey(DKIM target Apple generates)—

A few Hostinger-specific notes that saved me some head-scratching:

  • Use @ for the root domain in the Name field.
  • For the DKIM record, enter just sig1._domainkey — Hostinger appends the domain automatically. Do not type the full sig1._domainkey.vamsisethu.com.
  • If you have any other legitimate sender, merge it into a single SPF record (v=spf1 include:icloud.com include:otherservice.com ~all). Two separate v=spf1 records break SPF entirely.
  • Keep Hostinger’s own email hosting off for this domain so it doesn’t re-add its MX records later.

4. Verify

Back in the Apple wizard, click Finish Setup. If it complains the records aren’t found, that’s just DNS propagation — wait 15–60 minutes and retry.

Then confirm the address itself is listed and active under the domain (Custom Email Domain → your domain). Verifying the domain is not enough — the address has to exist on Apple’s side before it can receive anything.

Wiring it into the portfolio

The whole point was to put a real address on the site. My portfolio is Astro, and the contact email lives in one place — src/consts.ts:

export const SITE: Site = {
  NAME: "Vamsi Krishna Sethu",
  EMAIL: "hello@vamsisethu.com", // was a gmail address
  // ...
};

SITE.EMAIL feeds the homepage contact link in src/pages/index.astro, so a one-line change updates both the visible text and the mailto: link. A quick pnpm build confirmed it compiled clean.

I also set hello@vamsisethu.com as the default send-from address in iCloud Mail, so replies to contacts go out from the domain rather than my @icloud.com address.

Gotchas worth remembering

  • It’s all-or-nothing per domain. MX can only point to one provider, so once you hand vamsisethu.com to Apple, Apple handles all mail for it. You can’t split hello@ to iCloud and sales@ to another host on the same domain.
  • No catch-all. Every address must be explicitly defined.
  • Migrating from an existing mailbox? Changing MX moves new mail to iCloud; it won’t import old mail sitting on the previous provider. Back that up first.
  • Verify vs. create. A verified domain with zero addresses receives no mail. Creating the address is a separate step.

The lesson

The satisfying part wasn’t the DNS — it was realizing I’d nearly paid for something I already owned. If you have any paid iCloud+ tier and a domain, you already have professional custom-domain email. Check before you buy the registrar’s mailbox add-on.