Which solution to choose for corporate mail in a small firm?

Question

Email

It is necessary to organize a box for each employee (so far 5 pieces), options:
- Google for business
- Yandex corporate mail
- fastmail (business tariff)
What other options can there be? What are the pitfalls?
I myself tend to fastmail, but it’s embarrassing that you have to pay for each mailbox (it’s not clear whether aliases can be made, or each one is paid), and my colleagues are patriotic and don’t want to “enrich the Australian government” (under the table), You also need to be able to convince them.

Answer 1

I recommend Yandex.

Answer 2

Definitely Yandex Mail for Domain
1. Free
2. Reliable
3. High quality