Email: hello@pokerasiapacific.com
Corrections get priority over everything else. If a calculator produces a figure you think is wrong, or a probability on a page does not match your own working, send the specifics: what you entered, what the page showed, and what you expected. That is enough to reproduce it and either fix the page or explain the difference.
Suggestions for topics are read. The ones that get written are usually those where a working tool would help — a calculation people do repeatedly and get wrong.
Three things we do not do, so nobody wastes an email: we do not accept guest posts, we do not sell links or sponsored placements, and we do not give advice on individual hands or sessions.