A free app for Android, by Яндекс.
Yandex is a Russian electronic mail service provider. It allows you to create an email address and connect it to a smartphone, tablet, computer, or even a TV. This way, you can access your mail from anywhere, even if you don’t have a Wi-Fi connection. Yandex is available on most modern mobile devices and on some older ones.
It is also possible to access Yandex via a web browser. This service is an alternative to Mail, Google, and other email services. You can also create work conferences and family chats by link and Calendar via Telemost. You can make video calls on any device with no time restrictions.