This site describes a privately operated personal assistant application. Each deployment serves exactly one person — its owner — and is not offered to the public. There is no sign-up and nothing to download.
An assistant works through a dedicated Google account created for it. With its owner's authorisation it reads and sends email in that dedicated mailbox and reads and manages calendar events that the owner has shared with that account. It talks to its owner in a private Telegram chat. Replies on matters of substance are sent only after the owner approves them.
Deployments identify themselves to Google with names such as “Athina assistant”.
Emails from an assistant are sent on behalf of its owner, and say so. If you have questions about such a message or about your data, write to maria.assist@ivchenko.me.