Still on the G-Train. While I am thinking about migration back to my own hosted versions, I currently do this with Google Groups. I have many groups (amazon@..., newsletter@..., spam@...) for many different use cases. Though I have not yet created a catch all...

This thread prompted me to dig into it and I found a blog posting describing the process [1]. Will try this - while still digging deeper into the migration topic.

[1]: https://robbettis.com/blog/setting-a-catchall-email-for-g-su...