Is it possible to secure the mailbox in this way?

Question

Email

If an account is hacked mainly when it is actively used, is it possible to protect it by stopping logging into it?
That is, we register two boxes. We configure the forwarding of all letters from one to another. We use the first one as an email address, say, when registering on sites, and the internal one, where all correspondence is sent, will be the main one. Thus, we read all letters, and on the other hand, we have a buffer box, where we practically do not go.

Answer 1

Normal password + two-factor authentication = saved father of democracy.
And don't mess around.)

Answer 2

Most likely, you use the same password on all sites.
Make it a rule for mail to have a separate complex password that you do not enter anywhere else, except for the mail itself.
Well, there is still a chance that you have a Trojan that monitors your activity and takes control when a lot of tasty stuff is typed. In this case, I can’t advise anything, except to think before downloading any garbage.

Answer 3

If an account is hacked mainly when it is actively used,

No.
"Hack", that is, it is almost impossible to pick up a password by brute force on modern popular mail servers, unless, of course, the password is 123456. They get the opportunity to enter the mailbox in other ways - by trying passwords stolen by someone, trying to slip a phishing form ... Many on many mailboxes the same password (even on my unimportant accounts - one :)). Pick up.
The password is set to 15-20 characters and is enabled if there is two-factor authentication. It cannot be said that this is an absolutely stable scheme, but it immediately becomes an order of magnitude "stronger".

Answer 4

No, you can't, that's nonsense. Now there are advanced protection settings. Every postal service.