if a particular message you sent has been read by the receiver in a chat.
circle icon on the right side of the message you sent
- •If no one has read the message, the circle icon's color will stay gray.
- •The progress on the circle represents the percentage of users whove read the message in the group chat. For example, if half of the members have read the message, the circle icon's color will become half green.
- •If all users in the group chat have read the message, the circle icon a check mark.
lick the circle icon to check who read the message
3. If you @-mention someone, there will be a gray dot icon on the upper-right corner of the user who has been mentioned. After the user reads the message, the gray dot icon will turn into a green dot.
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