To request an invite to the Tildes alpha, email email@example.com. Do not email any other addresses to ask for an invite.
If you've discovered a security issue on Tildes, please disclose it responsibly by emailing firstname.lastname@example.org. Tildes does not offer a bug bounty.
For questions related to donations, email email@example.com.
If you're a journalist, blogger, etc. looking for information about Tildes, email firstname.lastname@example.org.
For all other purposes, please email email@example.com.
Tildes has an official Twitter account at @TildesNet. It will generally only tweet blog posts and site updates.