Thanks, Dean,
I'm still having PTG emails go to junk, along with the real junk. The first suggestion (putting PTG in my contacts) didn't work. Your second choice left me baffled because I was given no choices when I clicked on the little circle at the top of my email column. I just got the message "Filter by: unread." Then, I actually went into my google account and searched. I wasn't able to find anything that really addressed the issue. I tried the support area and found an interesting message that was about my exact problem. The question had been "locked." No answer. Eighteen others were apparently locked as well.
Perhaps it's a thing Google is working on. It started right after one of the recent computer upgrades. So I'm still checking junk and moving non-junk back into my in box. There ought to be some place to be able to label individual posts or related groups of posts as junk, or non junk. It used to be the case that just moving a post to junk labeled it as junk and moving a post out of junk, removed the junk label and following posts would stay in the inbox.
Richard