Hi @Gilles Becker ,
Welcome to the Microsoft Q&A platform!
Based on your description, you are a little confused about the way Outlook handles aliases and profiles. Let me explain first:
- When you set up multiple email addresses as aliases under one user account, all emails sent to these aliases will be sent to the same inbox. That's why you see emails from all domains in each profile.
- Outlook profiles are designed to distinguish different email accounts, but if you set up emails as aliases under one account, they will still be sent to the same inbox.
- If you want to keep emails from different domains completely separate, using a shared mailbox may be a better solution. A shared mailbox allows you to set up a different inbox for each email address, and you can access them separately in Outlook.
You can set it up as suggested below:
- Instead of using aliases, set up each email address as a separate account in Outlook. In this way, each profile will only show emails from a specific domain.
- Shared mailboxes are useful if you need multiple people to access the same email address. They keep emails organized and separated by domain.
Please feel free to contact me for any updates. And if this helps, don't forget to mark it as an answer.
Best,
Jake Zhang