You can block calls and messages from a specific number directly through your Mac's built-in apps

Blocking a number on a Mac works differently depending on whether you're blocking calls, text messages, or both. The Mac itself doesn't receive phone calls the way your iPhone does, but if you have an iPhone linked to your Apple account, you can manage blocks through your Mac using FaceTime and Messages. You can also block contacts in Mail if someone is sending unwanted emails. The steps vary slightly by app, but all of them let you block without needing third-party software.

When you block someone in Messages or FaceTime on your Mac, that block syncs across all your Apple devices that share the same Apple ID — your iPhone, iPad, and any other Mac you use. This means you only have to block once, and the person is blocked everywhere. Mail blocks, however, stay on that specific Mac and don't sync to your other devices.

Key Takeaways

  • Blocking through Messages or FaceTime on your Mac blocks that contact across all your Apple devices that share the same Apple ID.
  • You can block a number in Messages by right-clicking the conversation and selecting "Block This Caller" from the menu.
  • In FaceTime, open the conversation with the person you want to block, click the info icon, and select "Block This Caller."
  • Blocked contacts can still leave voicemails and send emails, but their calls and messages won't reach you or show notifications.
  • You can unblock a number at any time through the same apps by finding the contact and selecting "Unblock."

Blocking a number in Messages

Messages is the easiest place to block unwanted texts on your Mac. Open the Messages app, find the conversation with the number or contact you want to block, and right-click on it. A menu will appear with several options. Select "Block This Caller" from that menu. The conversation will remain in your message list, but you won't receive any new messages from that number, and they won't see read receipts when you open their old messages.

If you don't see the "Block This Caller" option, make sure you're right-clicking directly on the conversation thread in the left sidebar, not on an individual message within the thread. Once you block someone, they can still send you messages — they just won't be delivered to you, and you won't be notified. The block syncs across your iPhone, iPad, and Mac if they're all signed into the same Apple ID.

Blocking a number in FaceTime

To block someone from calling you on FaceTime through your Mac, open FaceTime and find the person's name or number in your recent calls or contacts list. Click on their name or number to open that conversation, then click the information icon (a small circle with an "i" in it) in the top right corner of the window. A panel will open on the right side showing details about that contact. Look for the "Block This Caller" option and click it.

After you block someone in FaceTime, they won't be able to call you through FaceTime on any of your Apple devices. Like Messages, this block syncs across all your devices using the same Apple ID. If you change your mind later, you can unblock them by opening FaceTime, finding their name in your recent calls, clicking the info icon, and selecting "Unblock This Caller."

What happens when you block a number

When you block a contact in Messages or FaceTime, that person can no longer reach you through those specific apps. However, blocking is not total — they can still call your phone number directly if you have a phone line, and they can still send you emails. Voicemails will still be recorded in your voicemail box, though you won't receive a notification about them. If you want to prevent them from emailing you as well, you'll need to set up a separate block or filter in Mail.

The blocked person won't receive a notification that you've blocked them, but they may figure it out if their messages never get a response or if FaceTime calls fail consistently. On their end, a blocked message might show as "delivered" or might fail silently depending on their device and the app. There's no way for them to know for certain through the app itself.

Blocking unwanted emails in Mail

If someone is sending you unwanted emails, you can block them in the Mail app. Open Mail, find an email from the person you want to block, and right-click on their email address or name. Select "Block Contact" from the menu. Emails from that address will then go directly to your Junk folder, and you won't see notifications for them.

Unlike Messages and FaceTime blocks, Mail blocks are specific to your Mac and don't sync to your iPhone or iPad. If you want to block the same email address on your other devices, you'll need to repeat the process in Mail on each device. You can unblock an email address by going to Mail preferences, clicking the "Junk Mail" tab, and removing the address from the blocked senders list.

Unblocking a number when you change your mind

To unblock someone in Messages, open the app, right-click on their conversation, and look for "Unblock This Caller" in the menu. In FaceTime, open the app, find their name in your recent calls, click the info icon, and select "Unblock This Caller." The unblock takes effect when ready across all your Apple devices.

If you unblock someone, they can contact you again through that app, and you'll receive notifications for their calls and messages. There's no waiting period or confirmation step — unblocking happens right away. Keep in mind that unblocking doesn't restore old messages or calls that arrived while they were blocked; those remain hidden.

When blocking isn't enough

If you're receiving calls or messages from numbers that keep changing, or if blocking individual numbers isn't stopping the unwanted contact, you may be dealing with spam or harassment that goes beyond what app-level blocking can handle. In those cases, you can report the number to Apple through the Messages or FaceTime app by clicking the info icon and selecting "Report Junk" or "Report as Spam." This helps Apple identify patterns of abuse.

For serious harassment or threats, contact your local police department or the FBI's Internet Crime Complaint Center. If the contact is coming through email, you can report it as phishing or spam directly to Apple Mail, which helps train their filters. Your phone carrier may also offer call-blocking tools at the network level, which can stop calls before they reach your devices.

Frequently Asked Questions

Does blocking someone on my Mac block them on my iPhone too?

Yes, if your Mac and iPhone are signed into the same Apple ID. Blocks in Messages and FaceTime sync across all your Apple devices. However, Mail blocks are device-specific and won't automatically sync, so you may need to block the same email address on your iPhone separately.

Can a blocked person tell that I've blocked them?

They won't receive a notification from Apple saying they're blocked, but they may suspect it if their calls consistently fail or messages never get responses. There's no way for them to know for certain through the app itself, though some third-party tools claim to detect blocks — those are unreliable.

What if I block someone by mistake?

You can unblock them when ready through the same app where you blocked them. Right-click the conversation in Messages or click the info icon in FaceTime and select "Unblock This Caller." They'll be able to contact you again right away, and you'll receive notifications for their calls and messages.

Will a blocked person still be able to leave me a voicemail?

Yes. Blocking in Messages and FaceTime only stops text messages and FaceTime calls — it doesn't block phone calls or voicemails. If you want to prevent someone from calling your phone number entirely, you'll need to contact your phone carrier about network-level call blocking.

Can I block a number that's not in my contacts?

Yes. In Messages, you can right-click any conversation thread, even if the number isn't saved as a contact. In FaceTime, you can block a number from your recent calls list. You don't need the person's name saved in your contacts to block them.