There is currently no way to automate the export of chat content other than manually copying and pasting to another platform. However, due to the factors stated above we do not encourage users to retain their chat history indefinitely, even through manual means. 

There are some simple methods to save chats, for example: 

• • To save a specific message from your Teams chat, hover over the message and click on the three-dot icon.  

• • Then, select the “Share to Outlook” option to send an email to the individual you had the conversation with or to yourself, ensuring the message is saved as an email. 

Please note that Teams Chat deleted by a retention policy is gone permanently and cannot be recovered. Everyone across the tenant will be subject to the retention policy.