Emails going to junk folder

jamesvdm  I would suggest to start directly from an EMT (Extended Message Trace) and then read the RAW Data field in the CSV you get. It should display, why it is being Tagged as SPAM and where (through Transport Rule or Protection Filtering/Malware/SPam in mail flow section.  i recently investigated a couple and found it was because of the Tagging at the Spam ( EOP GLobal Level), hence i had mark them as safe sender at my Protection level to correct this issue. Training the OUtook can be an option for specific sender or domains only. but for bulk (depending upon the type of emails like pop-ups, marketing, ads) this may not be helpful much as the External domains keep changing and adding up at the global network.

Let me know how it goes.

Cheers !

Ankit Shukla