Emails being deleted before reading
I use Outlook on my Mac and it has recently started deleting emails that I haven't even read yet. I go thru my emails every single day but have to keep going into the Delete folder and opening those that got deleted before I could read them. This is occurring on my laptop not the iPhone; I typically don't read emails on my phone but rather use the laptop. Thoughts?
MacBook Pro 13″, macOS 10.13