Can anyone help? Up until yesterday..outlook 2013 and apple mail were showing my preheader perfectly. Now instead of them showing the preheader they move start previewing the first clickable link, and every link I remove, it just moves down and selects the next one, completely ignoring all text??

I need 2 lines in my Outlook to be able to see the preheader text when testing, but the fact both Outlook and now apple mail are doing this? So I am trying to work out if it is my platform that has the issue as my friend who has Outlook 2010 does not see the code but the preheader to the same email that My Outlook 2013 sees just the code..