[LeifCarrotson]

Why would you expect an email provider to also provide a calendar?

There are many business, coordination, and communication tools that could be in my mail client (I do a lot of billing over email, is an email provider unusable if it doesn't integrate Quickbooks-like functionality too? What about shipping/receiving, project management, phone, SMS, mapping, etc, all things related to my use of email?), but I don't think they need to be there.

Calendar protocols are not federated like email. Choose between Exchange, Google, and iCloud. You'll have an easier time if you use the same one as most of your contacts.

Choose the best tool for the job. It's not likely that one provider will have the best tool for everything that, say, Outlook does.

[the_stc]

>Why would you expect an email provider to also provide a calendar?

Because calendar has become a key part of a productivity suite and Email is the keystone. We use Protonmail right now to avoid Google or Fastmail or someone serving up all our emails in a warrant. We keep sensitive stuff off Protonmail of course but every bit helps LE build their case against us.

Protonmail should have calendaring, wiki, and on and on. An encrypted replacement for Exchange eventually. We disable all audiovideo hardware for core members but I can see even secure voice being useful for our contractors to use.