The present document describes what “Yandex” considers to be an honest mailing list. This is not a public offer and it does not imply any obligations for Yandex or its email service to services that perform mass distribution of emails.
The document reflects the industry-specific best practices of major ISPs and email services and complies with ASTA regulations and recommendations as well as with “Internet Usage Rules”. The algorithm of distinguishing mailing lists and spam is proprietary information of Yandex and is not meant for publication or discussion.
The minimum requirements for honest mailing lists are as follows:
Proper network identification: