What are CSA’s requirements for senders?

CSA requirements for senders cover technical, procedural, and organizational standards. Technical requirements include proper SPF, DKIM, and DMARC authentication, valid reverse DNS, and correct SMTP behavior.

Procedural requirements address consent verification (double opt in recommended), complaint handling (prompt removal), unsubscribe processing (functional and easy), and list maintenance (bounce handling, hygiene).

Organizational requirements include having documented policies, responsible contact persons, and compliance infrastructure. CSA expects senders to demonstrate systematic commitment to responsible practices, not just point in time compliance.

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