Send Emails to customers when you complete a task

Using a custom menu and a custom email, we can send emails to customers when we complete a task and then move items to a completed sheet to stay organized.
Get the code here.
tinyurl.com/yd...

[@JakeMueller-s6r]

Thank you Parker. My only question I changed over from drop down to check boxes, I can get the email to work but now I cant get the completed to go into the completed tab like I could better. I have more then the 2 lines/column would the code change because of that?