Generic as well, but first and foremost for my use currently.
I have a form that people use pulldown menu to choose a co-worker which references a list on another sheet, that gets the email address and sends a formatted email using your script to the co-worker.
Then another question on the form has 6 images as multiple choice. The image selected should be inline in the email to the co-worker. (this is form we use to nominate fellow co-workers for awards for going above the normal at the office, in six categories. The winner, chosen every six months, receives a small bonus to their paycheck.)
So I have a list of the categories in the google sheet that references another column with the URL to the images respectively.
The formula on the response sheet pulls the URL based on the category chosen, and that URL should be used to create an inline image in the email.
If it were just one image, this wouldn't be an issue, but it's one of six images per form/email.
I can share the form with you if you like so you understand what I'm doing.