Send read receipts is a feature that allows the sender of a message to know when the recipient has read their message. This feature is available on various messaging platforms, including iMessage, Outlook, and Signal. When read receipts are enabled, a small notification will appear in the conversation thread indicating the time the message was read.

On iMessage, read receipts are enabled by default, but users can customize their settings to turn them off for specific contacts or for everyone. To enable read receipts for everyone who texts you, go to Settings > Messages on your iPhone or iPad and turn on the switch for Send Read Receipts. To turn off read receipts for specific contacts, open a conversation with the person in the Messages app, then tap their profile icon and turn off the Send Read Receipts switch.

In Outlook, users can request read receipts for all messages they send or for specific messages. To request a read receipt for a single message, users can select the Request a Read Receipt check box when composing the email. Recipients can decline to send read receipts, and there is no way to force a recipient to send one.

It is worth noting that there have been reports of a recurring iOS bug that makes Apples Messages app send read receipts despite the setting being disabled.

In summary, send read receipts is a feature that allows the sender of a message to know when the recipient has read their message. This feature is available on various messaging platforms, and users can customize their settings to turn read receipts on or off for specific contacts or for everyone.