Pdd.yandex.ru end user session via api?

Question

API

Good afternoon!
Literally just now, I took advantage of the possibility of user authorization using api in mail for domains from Yandex .
I immediately ran into a problem - the api has the ability to authorize a user from your site, but there is absolutely no way to end the session. As a result, the user who entered the site is also logged into the mail, but when leaving the site, the "mail" session is still alive, which, firstly, is unexpected, and secondly, unsafe. Yandex support replied that it was impossible to implement the api to end the session (yeah-ah).
Question for the connoisseurs: is there any way to end the "mail" session in parallel with the logout on the site?