This is, unfortunately, an extremely common question.
In fact, it happens to me from time to time as well. Someone forwards me an email with some humorous pictures (or better yet, pictures of Corgis), and some or all of them simply don’t display. It’s both frustrating and puzzling when it happens.
Email has evolved over the years, and as a result things aren’t always as compatible as we’d like them to be.
Let’s look at where the incompatibilities are most common, some of the ways that pictures can get lost, and one or two work-arounds that might help you view those all-important Corgi pictures that someone just sent you.