Issue Summary

Hi team, as described in the related issues listed in the comment below, we are having some issues with the AtlassianHostUser provided recognition, which is being changed by the application for the chat notifications app user "5b70c8b80fd0ac05d389f5e9".

Steps to Reproduce

1. On Confluence Cloud install the Navitabs app (the issue can also be reproduced with other apps)
2. Create a page, add a Tabs Group Macro with Tab Macros inside.
3. Mention a user on the page, this triggers an email to be sent to the mentioned user.
4. We get a call to the mail url.

Expected Results

The AtlassianHostUser is the account-id of the recipient

Actual Results

The AtlassianHostUser is 5b70c8b80fd0ac05d389f5e9 (Chat Notifications app user)

Workaround

If not used, a site admin can disable the Slack Integration from:

• https://NAME.atlassian.net/wiki/plugins/servlet/ac/confluence-chats-integration/addon-config-page