Hacker News Reader

But can I still give all my emails to OpenAI??

(semi-serious question because I’m currently very opposed, but I’m afraid of my future decisions)

Sure, if you really want to, you connect whatever AI you like: https://www.fastmail.com/blog/an-mcp-server-for-fastmail/ – but there's no LLM built in to Fastmail itself; it's a personal choice.