Receiving email on mailgun

I'm trying to use mailgun for it's SMTP service. The place I am trying to use it sends an email to the address entered as the "username":

postmaster@portal.example.com

I set up mailgun for receiving email within my DNS settings:

I've checked mailgun.org and made sure it sees the changes:

I have no idea where to see these actual emails, I've checked around the mailgun dashboard but I'm not finding it, I've checked logs and saw that the message was "accepted" but no delivered log.

I tried creating postmaster@portal.example.com on the host and then tried sending the validation code again but I didn't receive anything.

Help would be appreciated, thank you.

For Mailgun to handle the incoming emails for you, you need to add Routes.

Check the documentation on Routes to get started. It´s really quite straight forward.