Secure email service

Question

Email

When using mail on a domain, the problem inevitably arises of which email to link an account with a domain registrar, hosting account, etc., which is required for mail to work on a domain.
Prompt mail service:
- Complicated authorization is required;
- Ability to create additional mailboxes (for example, GMail has [email protected]);
- For paid SLA services;
- Ability to use a shared server domain for a box;
- As little as possible independently filtering letters from spam (the address of the box will be known in narrow and "intelligent" circles)
The service may be paid.

Answer 1

The answer is simple - get your own. Park your domain to an inexpensive VPS, set up a server and enjoy your health. Also, gmail can park .

Answer 2

there is no such

Answer 3

It will sound funny, but either do your own thing, or look towards domain hosting from Yandex and solutions from mail.ru.
The second one is even more interesting. mailru-nicknames lately, well done, it seems, they have begun to try - here it is, for you, the solution)

Answer 4

of course they will throw tomatoes at you, but if you need 2-factor authentication, then paid Google or office365 is better