Sending, receiving, and organizing email in Outlook.com
Welcome Paul Lachal,
Thank you for reaching out to Microsoft Q&A forum.
To better understand the issue, could you confirm whether you're using a personal Outlook.com account or a work/school Microsoft 365 account?
In the meantime, please check these quick details:
- Are the emails being marked as spam by all recipients or only certain recipients?
- Do the affected emails contain links, attachments, or images that the successful emails do not?
- Try sending a plain text test email with a simple subject (for example, "Test") to one of the affected recipients and let us know whether it still goes to Junk/Spam.
- Check whether the issue occurs when sending from both Outlook on the web and another email app (if you use one).
Looking forward to your update.