@marcel @mattswift @Natanox @jonny Tootfinder indexes all original public posts from whoever opted in. No replies however. As for the search syntax, I do not know what Mastodon uses. Tootfinder is limited to 90 days. I don't know how long Mastodon goes back and how the instances will cope with the volume.
@mattswift @Natanox @buercher @marcel @jonny Mastodon search syntax has + (require, AND), - (exclude, NOT) and “” (exact match with quotes) This is kinda hard to find, it’s at
https://blog.joinmastodon.org/2019/10/mastodon-3.0-in-depth/