Someone has set up importing email from my Yandex mailbox to another service. What do I do?

Step 1. Prohibit another service from accessing your mailbox

  1. Open Account management and go to the Security tab.
  2. Under Devices, select Device list.
  3. Go to Other applications and services and find the mail service you definitely didn't use for importing emails from Yandex. Click to the left of it to see the details. Then click Delete.

Step 2. Check your computer for viruses and change your password

To learn how to do this, see I think someone may have hacked into my account.