"AlertMail" is email updates of the new items (books, musics, games, etc.) based on your choice of keyword.
For example, you will inform you of sale information on the commodity that matches to the key word with "AlertMail" when the title etc. of the name of the writer, the artist name, and the book are registered by the key word. It comes not to miss the release date of the new publication and the new disc by this.