iMessages do not deliver when you are blocked
When someone blocks your number in iMessage, your messages do not reach them. The message appears to send on your end — you will see it in your conversation thread — but it sits in Apple's servers and never arrives at the recipient's device. You get no notification that the message failed. The person who blocked you sees nothing from you at all.
This is different from a message that fails to send because of a network problem. With a network failure, iMessage shows you a red exclamation mark or a "Not Delivered" notice. With a block, there is no error message. Your phone behaves as though the message went through normally, which is why many people do not realize they have been blocked until they try other ways to reach someone.
The block works the same way whether you are sending from an iPhone, iPad, or Mac. If the recipient has iMessage turned off and you send an SMS text instead, that text message can still reach them — but only if they have not also blocked your number at the carrier level, which is a separate action from blocking in iMessage.
Key Takeaways
- iMessages sent to someone who has blocked you appear to send successfully on your device but never reach the recipient's phone.
- You will not see an error message or delivery failure notice when you are blocked, which is why the block can be hard to detect.
- A block in iMessage is separate from a carrier-level block of your phone number, so blocking in iMessage does not stop SMS text messages unless the person also blocks you at the carrier level.
- If someone blocks you, you cannot see their read receipts, delivery status, or typing indicators, and you cannot start a FaceTime call with them.
- Blocking in iMessage is one-way — the person who blocked you can still send you messages, though you will not receive them if you have also blocked them back.
How to tell if you have been blocked
There is no direct way to know for certain that you have been blocked in iMessage, because Apple intentionally does not tell you. However, several signs suggest it. If your messages to one person stop showing delivery status (the "Delivered" text that normally appears below a message), that is a strong indicator. Open the conversation and look below your most recent message — if there is no delivery status and there was one before, something has changed.
Try sending a message that asks a direct question, then wait a few days. If you never get a response and you know the person is active on other platforms, they may have blocked you. Check whether you can start a FaceTime call with them — if the call fails to connect or you get an error, that is another sign. If you can see their location in Find My but they have suddenly disappeared from it, they may have blocked you from seeing their location specifically, which is a different action from blocking in iMessage.
The most reliable way to know is to ask someone else. Have a mutual friend text them or call them and ask directly. This removes the guesswork and gives you a clear answer.
What happens to SMS texts when you are blocked
iMessage and SMS (regular text messages) are two separate systems. If someone blocks you in iMessage only, your SMS text messages can still reach them — but only if their phone number is not also blocked at the carrier level. Many people block in iMessage but do not block at the carrier level, so SMS texts may still go through.
However, if the person has blocked your phone number with their carrier — through their phone's settings or by calling their mobile provider — then SMS texts will not reach them either. You will usually see a "Message Not Delivered" error when this happens, though some carriers do not send a notification.
The safest assumption is that if someone has blocked you in iMessage, they do not want to hear from you through any method. Even if SMS texts technically reach them, sending them is unlikely to improve the situation.
Why Apple does not show you a delivery failure
Apple's design choice to hide blocks from the sender is intentional. The company could show you a message saying "This person has blocked you," but it does not. This protects the person who blocked you from confrontation or pressure to unblock. It also prevents someone from using a second phone or account to keep messaging after being blocked.
From a technical standpoint, Apple's servers recognize the block and stop the message before it reaches the recipient's device. Your phone never receives a response from Apple's servers saying "blocked" — it just never gets a delivery confirmation. This silence is the block itself.
This design is consistent across Apple's ecosystem. FaceTime calls behave the same way — they fail silently without telling you why. This is different from some other messaging apps, which explicitly tell you when someone has blocked you or when a message could not be delivered.
Blocking versus other reasons a message might not deliver
A message can fail to deliver for several reasons that have nothing to do with being blocked. If the recipient's phone is off or out of range, iMessage queues the message and tries again when the phone comes back online. If their iMessage is turned off, the message converts to an SMS text automatically (if you have that setting enabled). If they have Do Not Disturb turned on, the message still delivers — it just does not notify them.
Network problems on your end can also prevent delivery. If your WiFi or cellular connection is unstable, iMessage shows you a red exclamation mark and a "Not Delivered" option to try again. This is the clearest sign that something went wrong on your side, not the recipient's.
The key difference is that all of these other failures give you some kind of feedback. A block gives you none — the message appears to send normally, which is what makes it hard to detect.
What you cannot do after being blocked
Beyond messages not reaching someone, being blocked prevents several other actions. You cannot see whether they have read your previous messages or whether they are typing. You cannot start a FaceTime or FaceTime Audio call with them — the call will fail. You cannot see their location in Find My if they have blocked you from seeing it. You cannot add them to a group iMessage conversation.
However, you can still see their contact information, their profile picture (if they have not changed it since blocking you), and any messages they sent you before the block. You can still call them on their phone number using the Phone app — the block applies only to iMessage and FaceTime, not to regular phone calls. Some people block in iMessage but leave phone calls open, though this is less common.
Blocking is one-way, not mutual
If someone blocks you, you can still send them messages — they just will not receive them. You can still see their messages to you if they sent any before the block. If you block them back, then neither of you can message the other, and neither of you can see the other's read receipts or typing status.
This one-way nature is important because it means the person who blocked you can still reach out to you if they change their mind. They can unblock you at any time, and their messages will start reaching you again. You will not be notified when they unblock you — you will only notice if they start messaging you again.
Frequently Asked Questions
Can someone see that I tried to message them after they blocked me?
No. When you are blocked, your messages never reach Apple's servers in a way that creates a record on their device. The person who blocked you sees nothing — no failed message notifications, no indication that you tried to contact them. It is as though you never sent the message at all from their perspective.
If I unblock someone, will they see all the messages I sent while they had me blocked?
No. Messages sent while you were blocked are lost. They were never delivered to the recipient's phone, so they do not exist in their message history. Once you unblock them, only new messages you send will reach them. The old blocked messages are gone.
Does blocking in iMessage also block FaceTime calls?
Yes. If someone blocks you in iMessage, they have also blocked you in FaceTime. When you try to call them, the call will fail. However, they can still call you on your phone number using the Phone app — the block applies only to iMessage and FaceTime, not to regular phone calls.
What if I send an iMessage to someone and they block me before it delivers?
If the message was already in transit when they blocked you, it will not deliver. Your phone will not show a delivery failure — it will just sit in your conversation thread without a delivery status. The message is lost, and they will never see it.
Can I block someone and still receive their messages?
Yes. When you block someone, you prevent your messages from reaching them, but their messages can still reach you. You will not see notifications for their messages, and they will not appear in your main conversation list, but they will be stored in a separate folder. You can unblock them at any time to see the messages normally again.