Das (Support-) Forum / die Anlaufstelle für Philips Consumer Lifestyle (TV, Audio, Video, Multimedia, HUE, Sonicare und mehr)
Look for the section titled Blocked senders and domains .
To unblock a sender in the web version of Outlook, follow these steps: unblock sender in outlook
Search for their email in your Junk folder. If you find messages there, right-click → → Never Block Sender is the fastest fix. Look for the section titled Blocked senders and domains