Outlook Not Showing Emails From Certain Contacts

There could be several reasons why Outlook is not showing emails from certain contacts. It is possible that the emails are being filtered out by Outlook as spam, or that the contacts are sending emails from a different email address than the one you have listed in Outlook. It is also possible that the contact has put you on their email list, but you have not confirmed your subscription yet. Finally, it is possible that the contact’s emails are being blocked by a firewall on your network.