To answer your questions, No. If you are using a private message another user won't be able to view the message as it is a private message. However, your group owner or admin has the right to request from us your 1-on-1 message with a valid certifies certificate of proof.
Hope this answer your questions, but if you need further information, feel free to create a ticket over at our support portal : https://support.atlassian.com/customer/servicedesk-portal?utm_source=landingpage
...from the beginning. We have built up a lot of content in HipChat, with it being a core tool in our distributed company model. While it is true that we didn’t need to move to Slack immediately, we felt it...
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