What is the alternative to Outlook?

Question

Calendar

Good afternoon. Can you please tell me what is the alternative to Outlook? What you need:
Working with contacts, mail and calendars from different services (google, yandex, hotmail etc), and most importantly, synchronization of calendars and contacts from different services, and not importing from everywhere into one, but two-way. Those. for example - I created a task in the Yandex calendar - it was imported into Google, I edited it in Google - the task was synchronized with Yandex. It's the same with contacts.

And actually, you need either an organizer or a small program to synchronize different services.

What for? Android and the lack of a Yandex calendar for it. Yes, and Microsoft has a problem with this too.

Answer 1

evolution
is positioned as a replacement for Outlook, it can be synchronized with calendars, address book, etc. from exchange,
but Thunderbirds can’t do that

Answer 2

Thunderbird under Windows/Linux, standard Mail.app under OS X.