Preventing users with gmail address to have submissions landing into the spam folder

This actually happens because JotForm's email servers aren't configured properly and trip GMail's spam filter. This URL provides instructions on fixing the error(s), but it must be done by the owner of the mail server (JotForm),

http://support.google.com/mail/answer/81126?hl=en

Thank you for sharing your suggestion with other users here in the support forum.