Is it possible to extract the timestamp from a person's response to a Typeform?

Hi @Stefan.K Thanks for stopping by the community! While it isn’t possible to add the timestamp to the notification settings, the email notifications are sent shortly after the response is submitted. The timing is slightly different, but you could use that for a reference. 

Otherwise, you could also use a service like Zapier or Integromat to send the notification, which would allow you to add even more fields.