Confirm your email address

You will need to setup two questions: 

One question will ask for the email address and add validation as email.

1. Create question
2. Make required
3. Add validation
4. click the down arrow that says Minimum length
5. Content type
6. Email address

Second question will a validation as custom.  To get the custom validation you will need to pipe the information from the email question (first question you setup).  Copy the piping information into the confirm email address question. (second question you setup)

1. Create the second question: Please confirm the email address
   1. Make it require
2. Go back to question asking for the email address (first question you setup)
3. Check the box and click Piped text tab
4. pick Survey Question 
5. find the Question that is asking for email
6. Click Email address
7. Copy the piping information - Show look like this ${q://QID18/ChoiceTextEntryValue} 
8. check the second question where you are asking for confirm the email address
9. Add validation
10. Custom
11. Pick the question for Confirm the email address
12. Pick the choice Please confirm the email address
13. Pick Is Equal to
14. Paste the piping information
15. Optional check the Ignore Case
16. Load a email does not match error message
17. Save

Do not forget to delete the piping information if you see it in first question like it show above after you copied it in the custom validation.

https://www.qualtrics.com/support/survey-platform/survey-module/editing-questions/validation/#CustomValidationExample