In the Text Box, for each picture:

In a single separate line start with < then right against it add img src=

then right against that add the pic URL Which is the pic location description that starts with https and ends with jpg

then right against that put a > at the end. The only space gap is between the img and the src.

Put nothing else in that line.

Repeat for other pics. You can add text labels in separate lines before or after the pic line.

Type *PIC* or *PICS* at the end of the text inside the Subject Box.