Emails Go To Spam

I’ve had similar issues over the years. Sometimes it takes a while to build a good sender reputation. I often use services such as:

… or similar. Takes the pain out of delivery worries and there’s a free plan also.

Also see:
https://answers.microsoft.com/en-us/outlook_com/forum/all/outgoing-emails-from-outlookcom-going-to/484c319c-d76e-4b08-aa84-8b50d100a34c