Is there something like this that can connect to an arbitrary IMAP account, rather than being tied to Gmail?

This will hurt for a lot of startup AI wrappers around these productivity tools.

Briefings are a feature, not a moat. If that's your whole product, Google was always going to eat you eventually. We do this too at amaiko.ai. Full M365 integration, but not locked to Microsoft. Can pull in Google services, Jira, whatever else. The defensible part isn't "here's what's on your calendar," it's the AI actually building memory over weeks and adapting to how you work.

It’s a Google Labs experiment. We all know how that goes.

Startups will be fine.

it was only a matter of time before this was coming

Isn't this just about context management? iOS Shortcuts has access to the same context: Mail, Calendar, Files. You could even add in Notes, Reminders, and Weather.

Use the new models action and write up a prompt and away it goes. Automate to run every morning or trigger it at any time of the day by clicking the Shortcut.

Here's one such example, although it does use ChatGPT instead of an Apple LLM model: https://techtiff.substack.com/p/the-iphone-shortcut-that-run...

Don't take that as promotion. Just one of the first that came up in Google.

I did this for myself with their API's. I find it most useful for one in the morning and one right before you leave work for the day, informing you of what's important for the next day. That way, you can prepare that evening for the next day plus a reference if things change by the time you wake up. These are useful tools and I'm glad big tech is implementing them because people have snarky responses about AI if there's not already some gatekeeper rolling it out.