Chat with others in Microsoft Teams
Use Microsoft Teams to chat online with your colleagues.
Start a chat with another person
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Select New message
 at the top of your list of chats and channels. - 
                          
Enter a person’s name.
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Compose your message in the box at the bottom of the chat.
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To open formatting options, select Format
 to the right of your message. - 
                          
When your message is ready, select Send
 or press Enter to start the chat. 
You can also start a one-on-one chat from someone's profile card. Open it by choosing their picture in a channel or finding their name using the Search box.
Start a chat with yourself
You can start a chat with yourself in Teams. Compose your message just as you would in a regular one-on-one chat. Use your chat space for drafts, to send messages and files to yourself, or to get to know chat features a little better. You can drag your chat with yourself to the top of the Favorites section for easy reference.
Start and name a group chat
A group chat includes multiple people in a conversation. Create a group chat the same way you start a one-on-one chat.
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Select New message
 at the top of your list of chats and channels. - 
                          
Select the down arrow to the far right of To to reveal the Group name section.
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Type a group name.
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Type the names of the people you’d like to add in the To section.
 
This starts a new conversation. Everyone who has access to the group chat can send messages.
You can include up to 250 people in a group chat.
Add people to the conversation
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To add people to a group chat, select View and add participants
 > Add people. - 
                          
Type the names of the people you'd like to chat with. If it is an existing group chat, you can also choose how much of the chat history to include.
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Select Add to add them to the conversation.
 
Notes:
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You can include chat history only when adding someone to an existing group chat, not for a one-on-one.
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Teams saves the entire chat history, all the way back to the first message. If someone leaves the group, their chat responses remain in your chat history.
 
See who's in a group chat
To see who’s in a group chat, select View and add participants 
Chat with Microsoft support
Related topics
You start one-on-one and group chats the same way: by tapping Chat > New message 
Start a chat with another person
Once you've tapped New message 
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Tap More messaging options
 . - 
                          
Tap Format
 . 
Compose your message and when you're ready, tap Send  
Start a chat with yourself
You can start a chat with yourself in Teams. Compose your message just as you would in a regular one-on-one chat.
                         
You can drag your chat with yourself to the top of the Favorites section for easy reference.
                         
Start and name a group chat
Create a group chat the same way you start a one-on-one chat.
- 
                          
Tap New message
 and then type the names of the people you’d like to add in the To field. - 
                          
Compose and send your message.
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Tap the names of the participants at the top of your screen.
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Tap Group chat name.
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Type a group name and then tap Save.
 
Everyone who has access to the group chat can send messages.
Add people to the conversation
To include more people in a conversation:
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Tap the names of the participants at the top of your screen then tap Add people
 . - 
                          
Type the names of the people you'd like to chat with, choose how much of the chat history to include, then tap Done.
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Note: You can only include chat history when adding someone to a group chat (not a one-on-one).
Teams saves the entire chat history, all the way back to the first message. If someone leaves the group their chat responses remain in your chat history.
See who's in a group chat
To see who’s in a group chat, tap the names of the participants at the top of your screen for a list of everyone’s names.