Read receipts in Microsoft Teams (free) let people know when you’ve read their messages, and let you know when they’ve read yours. When a message is read, a Seen notification 
Read receipts are enabled by default and are available in group chats and one-on-one chats.
To verify who’s read your message in a chat, tap and hold the message, then tap Seen by.
Tip: Everyone will have to have read receipts turned On for messages to be counted as Seen.
To turn read receipts on or off:
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Tap your profile picture or More
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Tap Messaging
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Turn Readreceipts on or off.
Read receipts are enabled by default and are available in group chats and one-on-one chats.
To verify who's read your message in a chat, hover over the message and select More options 
Tip: Everyone will have to have read receipts turned On for messages to be counted as Read.
To turn read receipts on or off:
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Open Microsoft Teams (free).Select Settings and more
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Select Settings
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Select Privacy
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Turn Readreceipts on or off.
Contact us
For more help, contact support or ask a question in the Microsoft Teams Community.
