ok i did some tests for this
gmail is able to receive PT: https://gyazo.com/fd648dff98c50c4f691363ba4b37f842
if you have an older gmail account then it is possible something has happened to make your account flag emails from the address email@example.com
as spam. if your PT doesn't appear in a search of that address in your gmail (which should pull results from trash, archive, spam, etc) then your gmail has a filter set up to delete these email immediately rather than sending them to trash.
to fix this issue in your primary gmail, make a filter for emails coming from firstname.lastname@example.org
and make sure they go to your inbox. how to create filters in gmail