Can I send from my HEY address using a different email provider?

No, it isn't possible to send emails from your @hey.com or HEY for Domains address while using a different provider like Gmail or Outlook. You can only send from your @hey.com or HEY for Domains address using one of our Mac, Windows, iOS, and Android apps (you can grab them right here) or on a web browser at: https://app.hey.com/sign_in