Webmail for Knight Frank Russia:
https://webmail.ru.knightfrank.com/owa
( Login with the domain 1GO\ For example: 1go\eivanov )
 
Mimecast Personal Portal
(for archived emails):
https://webmail.mimecast.com/m/portal/login/#/login
( Login with your email address. For example: evgeniy.ivanov@ru.knightfrank.com )