How to avoid Outlook and hotmail spam folder

To request to whitelist a domain on Microsoft email services you can follow these simple steps.

First, check the spamicity of your email.
You can use

Please consider Using SPF and DKIM.

If you didn't set up your domain DNS please go under your Project Settings -> Email -> Outbound.

If your result is above 9, you can browse this page to check the status of your server:

Enter your server's IP and follow instruction.
If your IP is blacklisted, you have to open a case here:

Fill in the fields and in a few minutes you will receive a receipt of the request, then later on a validation (or not) of the setting in whitelist with the period of observation.

If your request is accepted, it will take a few hours to a few days for Microsoft servers to be up to date.