Maybe https://groups.io ?
It's not super clear to me if there is an obvious replacement, but it appears to be similar in spirit to yahoo groups. They have yahoo import and supposedly it's free as long as there is no more than 1GB of uploaded files.
Op do 17 okt. 2019 om 22:53 schreef Tony Cappellini cappy2112@... [xpantastic] <xpantastic@yahoogroups.com>:
I'd hate to see all of us lose touch due to Yahoo killing all of the Yahoo groups.Does anyone have any ideas on how to keep this group alive- elsewhere?ThanksTony