Annabel Maw

Director of Communications, JotForm
Hi, everyone! Annabel here. I work on the communications team @JotForm and am passionate about no-code tools, SaaS products, international travel, and coffee.
Hey AJ! Yes, you are correct! It's 1GB per individual file. There's more info on it here: https://www.jotform.com/help/33-changing-the-file-upload-size-limit. If you need assistance with your specific form, feel free to reach out to our friendly support team at [email protected] Cheers! 
Hey Nicholas! Some widgets are able to do this, but it depends on which one you use. For example, if you use the Xverify email widget (https://www.jotform.com/widgets/xverify-email), it will automatically check the email address and instantly notify a respondent on whether or not it's valid.

Overall, JotForm has hundreds of widgets with different capabilities to choose from. More info on them here: https://www.jotform.com/widgets/. Let me know if you have other questions. Thanks!