[carrier_lost]

Outlook.com offers aliases too: https://support.office.com/en-us/article/Add-or-remove-an-em...

[rhblake]

I don't think Outlook.com supports catchall/wildcard aliases though, which makes using unique addresses for everything a bit annoying, which makes address reuse more likely.

[carrier_lost]

Interesting point! I hadn’t thought about wildcards in aliases.