diff --git a/README.md b/README.md
index 700b80a..5c684ed 100644
--- a/README.md
+++ b/README.md
@@ -55,4 +55,17 @@ Yahoo uses the following pattern[*](https://help.yahoo.com/kb/SLN16026.html):
 * *keyword* - one from a list of keywords defined by the user.
 
 Therefore we do not know what is the real email, so in this case result will be `baseName@yahoo.com`,
-which actually does not exist.
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+which actually does not exist.
+
+## Yandex.ru
+In official [documentation](https://yandex.com/support/mail/web/preferences/about-sender/additional-addresses.html) you can find some use-cases about aliases usage.
+
+## Mail.ru
+Mail.ru service uses following aliases:
+* `janedoe+alias@mail.ru` will be redirected to `janedoe@mail.ru`
+* `janeDoe@MAIL.RU` will be redirected to `janedoe@mail.ru`
+
+## Icloud.com
+Icloud.com service uses following aliases:
+* `janedoe+alias@icloud.com` will be redirected to `janedoe@icloud.com`
+* `janeDoe@ICLOUD.COM` will be redirected to `janedoe@icloud.com`
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