You might received emails with HTML content with images which were not displayed by default so you had to click "Show Images" action to see them.
If you are curious what "Show images" action actually does, then everything is simple - it just sets fieldname "$DelayedImagesOK" to value "ok"
How can you revert or delete this field?
ReplyDeleteFIELD $DelayedImagesOK := @DeleteField;
ReplyDeleteSELECT @All