@ in any rich-text surface — a document, an email body, a channel message, a chat or automation prompt, or a task description — opens an autocomplete that lets you reference something else in Macro. Whatever you pick renders as a live inline pill that carries its target’s current metadata (a task mention, for instance, shows the task’s status and priority), and the reference is recorded as a backlink in the target’s References panel.
What you can mention
- People — by name or email.
- Documents and blocks — any doc, task, canvas, code file, pdf, etc.
- Contacts and companies — CRM records, rendered differently for people vs. organizations.
- Channels — a deep link to the channel, or to a specific message or thread.
- Dates — date pills.
- Groups — by group alias.
What a mention does depends on where you make it
In a document or chat, a mention is a navigable link and a source of context. In an email body it has side effects: mentioning a person adds them to CC, and mentioning a document inserts a link and updates that document’s permissions so recipients can open it. In a channel there are two special mentions layered on top of the normal ones —@here pings every participant, and @Macro invokes the agent inline.
The agent leans on mentions heavily: anything you @mention into a chat is pulled in as context, and autocomplete there surfaces your currently open tabs first.