Nylas provides CRUD APIs for email, calendar, and contacts across multiple third-party providers. With one API, you can read, create, and update emails, calendar events, and contacts across Google, Outlook/Exchange, and other providers.
Found this while bouncing around on the net. Nylas powers some awesome low-code/no-code tools (check out Standard Library) but are pretty cool in their own right.
They've been posted on PH a few times before, but I don't think this iteration of their product has been posted here.
