I work in email marketing. Please let me know what is an anti-spam policy, and how it will benefit me?
An anti-spam policy is a document that seeks to govern or control spam communications.
A policy will often begin by defining "spam". There is no universally agreed definition, but a typical definition will cover communications that are unlawful, unsolicited, commercial on some level and/or are made in bulk. Under some definitions, communications do not need to be commercial to be spam; under other definitions, they do not need to be in bulk. It depends somewhat upon the medium.
Some policies, particularly those taking a precautionary approach, will specify precisely the types of communication that are permitted. For instance, an anti-spam policy used by an email marketing service may specify the exact means that must be employed by users to build email marketing lists.
A policy will usually prohibit all spam. The prohibition may be contractual, such that a breach of the policy constitutes an actionable breach of contract. Where an anti-spam policy relates to the provision of a service, a breach of the policy may have defined consequences, such as the withdrawal of the service.