Beyond validating for email structure itself, when Warn about common domain typos is enabled, Formsort suggests potential corrections to non-standard domains.
For example, an answer ending like gnail.com would be met with a prompt asking if the responder meant gmail.com, and the responder would be prompted to correct it before continuing.
A warning about an email type
Warnings about common domain typos work best when responders are consumers using common email providers. If your responders are using business emails you may want to disable this feature.
Allowing multiple answers
EnablingAllow multiple answers lets the respondent type more than one email address as an answer to your question.