The fastest way to block an email on iCloud

Open the email you want to block in iCloud Mail, click the three-dot menu icon in the top right corner of the message, and select "Block Contact." iCloud will move that sender's future emails to your Junk folder automatically. You can also block someone before opening their email: right-click (or long-press on Mac) the sender's name in your inbox and choose "Block Contact" from the menu.

Once you block an address, iCloud stores it in your blocked senders list. Any email from that address will skip your inbox and go straight to Junk. The sender won't know they're blocked — the email straightforward disappears from your view.

If you change your mind later, you can unblock the address by going to Settings > Mail > Blocked, finding the sender, and clicking the minus sign next to their name.

Key Takeaways

  • Blocking an email on iCloud takes one click from the message itself or from your inbox list.
  • Blocked emails go to your Junk folder, not deleted, so you can recover them if you unblock by mistake.
  • You can view and manage your full blocked list in iCloud Mail settings under Blocked.
  • Blocking works across all your devices that use the same iCloud account, since the list syncs automatically.

Where to find your blocked senders list

Your blocked senders list lives in iCloud Mail settings. On a computer, click the gear icon in the top right of iCloud Mail, then select "Settings." In the left sidebar, click "Mail," then scroll down to find "Blocked." On an iPhone or iPad, open the Mail app, tap the mailbox list icon (three horizontal lines), scroll to the bottom, and tap "Settings." Then tap "Blocked Senders."

This list shows every address you've blocked from your iCloud account. The list syncs across all your devices — block someone on your Mac and they're blocked on your iPhone too. You can unblock anyone by tapping or clicking the minus sign next to their name.

What happens when you block someone on iCloud

When you block a sender, their emails don't disappear entirely. Instead, they land in your Junk folder. This matters because you can still recover an email if you blocked the wrong address by mistake. Open Junk, find the message, and unblock the sender from there.

The blocked sender cannot tell they've been blocked. They won't receive a bounce-back message or any notification. From their perspective, the email was sent normally. However, if they have a way to check whether you've read their message (some email systems track this), they might notice you never open anything they send.

Blocking is not the same as reporting spam. If an email is harassing or threatening, you may want to report it to iCloud as well. Click the three-dot menu and select "Report Junk" to send the message to Apple's spam filters, which helps protect other iCloud users.

Blocking email on iPhone and iPad

On your iPhone or iPad, open the Mail app and find the email you want to block. Swipe left on the message (or long-press it), and you'll see options appear. Tap "Block Contact." The sender is now blocked, and their future emails go to Junk.

You can also block someone from your inbox without opening the email. Swipe left on their message in the list, tap the three dots that appear, and select "Block Contact." The process is the same whether you're blocking from the message itself or from the inbox view.

Blocking email on Mac and Windows

On a Mac or Windows computer, open iCloud Mail in your web browser. Find the email from the sender you want to block and click it to open it. In the top right corner of the message, click the three-dot menu icon and select "Block Contact." The sender is now blocked.

If you prefer not to open the email, you can right-click the sender's name or address in your inbox list and choose "Block Contact" from the menu that appears. This works the same way as blocking from the open message.

Unblocking an email address

To unblock someone, go to your blocked senders list in iCloud Mail settings. On a computer, click the gear icon, select "Settings," click "Mail" in the left sidebar, and scroll to "Blocked." Find the address you want to unblock and click the minus sign next to it. On iPhone or iPad, go to Settings > Mail > Blocked, find the address, and tap the minus sign.

Once you unblock an address, that sender's emails will no longer go to Junk. They'll arrive in your inbox like any other message. You can block and unblock the same address as many times as you need to.

When blocking might not be enough

Blocking works well for unwanted emails from people you know or regular spam. However, if someone is sending threatening messages, harassing you repeatedly, or you suspect fraud, blocking alone may not be sufficient. Report the email to iCloud as junk, and consider reporting the behavior to local authorities if it involves threats or harassment.

If you receive emails from many different addresses that appear to be from the same sender (a technique called "spoofing"), blocking each address individually becomes tedious. In that case, you might set up a mail rule or filter instead. iCloud Mail allows you to create rules that automatically move emails matching certain criteria to Junk. This is more powerful than blocking a single address because it can catch variations of the same sender.

Frequently Asked Questions

Can I block an entire domain instead of just one email address?

iCloud Mail doesn't have a built-in feature to block an entire domain with one click. However, you can create a mail rule to catch emails from any address ending in that domain. In iCloud Mail settings, look for "Rules" and set up a rule that moves emails from that domain to Junk automatically.

Will the person I blocked know I blocked them?

No. They won't receive any notification, and their emails will appear to send normally from their end. They might eventually notice you never respond, but iCloud doesn't tell them they've been blocked.

What if I accidentally block someone I didn't mean to?

Go to your blocked senders list in iCloud Mail settings and click the minus sign next to their address to unblock them. Their emails will start arriving in your inbox again. Any messages they sent while they were blocked are still in your Junk folder and can be moved back to your inbox if needed.

Do blocked emails get deleted, or can I still see them?

Blocked emails go to your Junk folder, not deleted. You can open Junk anytime to see what's there. If you unblock someone, their old emails remain in Junk unless you move them back to your inbox manually.

If I block someone on my iPhone, are they blocked on my Mac too?

Yes. Your blocked senders list syncs across all devices that use the same iCloud account. Block someone on your iPhone and they're automatically blocked on your Mac, iPad, and any other device signed in to that iCloud account.