How to confirm a new email for a profile using a code?

[hailovigor]

Hello
I receive a code to confirm a new email via the send_confirm_email command. How can I then transfer this code and assign a new email account?

As far as I know, sometimes a code comes, sometimes a link. The link is enough to open, but what about the code?

[sunmasters]

Link or code. Both can confirm

[hailovigor]

But how do you send the code after that?