Sending an email invite by adding custom variable is possible?
Yes, you can create an email list and upload the custom variables in it and then you can use them in the survey invitation. Please refer to the following help files: Creating email list: https://www.questionpro.com/help/manage-email-list.html Personalizing survey invitations: https://www.questionpro.com/help/personalizing-emails.html
How do I make a copy of my existing survey
I want to use the below survey in my account, is there any way to copy it?
https://www.questionpro.com/survey-templates/product-company-customer-service-evaluation/
Have a upload question type in survey with 800 odd completed responses, with PDF file in each response but when we download we only have approx 600 PDF files in the zip file.