There are several .news sites that I own.
All of these have a “Post to website by sending an email” feature.
I can allow as many people as I want to be able to post to a website
by simply sending an email from an allowed email address.

https://mlm.news and https://multilevelmarketing.news
(Smilar spellings fort search engines, but different domain names)

https://antimlm.news and https://anti-mlm.news
Might as well own both sides of the narrative)

https://healthcoach.news
https://healthfood.news and https://alternativehealthcare.news
(These are a similar niche, but with slightly different interests)

https://travelagency.news
(For the travel industry, agents, companies, ir customers)

Save Me.news is a special site with feeds from other sites
https://saveme.news