When I preview Outlook emails or drafts in Outlook it is displaying unexpected data.
This is due to data we have no control over. This could be if a link to a website is included and this is showing data from that website link in the preview, instead of just showing the link.
We suggest you turn automatic links off.
To turn off automatic links, please refer to the Microsoft support article https://support.office.com/en-us/article/Stop-text-from-turning-into-a-hyperlink-F361CB96-02E4-40BB-B39C-0EF5E2FAAC90