In my Verizon email screen, lost my folders and the words: inbox, ..How can I get that area back?

[Windows Central Question]

In my verizon email screen, lost my folders and the words: inbox, ...

when I downloaded window 10 in my laptop: lost the whole left area in my Verizon email screen where the words are INBOX, SENT, DRAFT, TRASH and below them there were all my FOLDERS of saved emails. how do I get that area back, it is blank now

 

[Barbara Cohen]

I'm having the same difficulty; how can I fix it?