All my mails sent from outlook.com account to ANY Gmail account end up in the spam folder of the recipient. Only after whitelisting my mail as a safe sender on Gmail does my new mail go directly to the inbox. I've been facing this problem for a while now, but all those times the recipient was expecting a mail from me and if they didn't receive one, they would check with me. But if I'm sending a mail to a new contact and they aren't expecting a mail from me or haven't whitelisted me my mail goes unnoticed completely. Does anyone know how to fix this issue?