I am having a difficult time getting my emails to send. End up with
Error: Invalid email: undefined
I have multiple columns of email addresses for a feedback for for teachers. Teachers email addresses are narrowed down based on the form and which department they work in (math, english, science, social studies, etc.). I used an array formula to get all of the emails to post in one column, hoping that would help. However, I still get the error code. Suggestions on how to set up formmule when the "TO:" email addresses might drop into multiple columns?