From the shortcut menu that opens, choose Undo Send.Control-click the message that you want to unsend.You can undo a sent message within 2 minutes after sending it. If they are using any other operating system, they see your edited message as an additional message preceded by 'Edited to'.They can click Edited to see the original message as well, then click Hide Edits to show only the edited message. If they are using macOS Ventura or later, iOS 16 or later, or iPadOS 16.1 or later, they see your edited message with the word Edited under the message.Make your edits, then press Return to send, or click outside of the message bubble to cancel.

From the shortcut menu that opens, choose Edit.

Control-click the message that you want to edit.You can edit a sent message up to five times within 15 minutes after sending it. Their name is then highlighted in the message, and they will receive a notification letting them know that they have been mentioned. To help bring your message to the attention of a recipient, include before their name, like Or click their name after you type it.

To include other items, such as Memoji stickers, GIFs, and message effects such as balloons or confetti, click the Apps button.

To include an audio recording, click the Record Audio button and record your message.

To include an image or other file, drag or paste it into the message field.

To include emoji, click the Emoji Picker button.

Press Tab or click the message field at the bottom of the window, then type your message.

Or click the Add button and choose from your contacts.

Type the name, email address, or phone number of one or more recipients.

Click the New Message button at the top of the Messages window.

You might be asked to sign in with your Apple ID.

Mac imessage not sending or receiving