What are the key requirements under each?

Common requirements across most APAC jurisdictions include: consent before sending (opt-in, whether express or inferred from relationships), accurate sender identification (clear disclosure of who is sending and on whose behalf), functional unsubscribe mechanisms (easy opt-out that's honored promptly), and prohibition on harvesting (no dictionary attacks or scraping to build lists).

Specific variations: Singapore requires checking the DNC Registry before messaging; Japan has specific mobile messaging rules and requires preservation of consent records; Australia defines "inferred consent" broadly but enforces aggressively; India emphasizes notice and purpose limitation with emerging implementation details.

Documentation requirements vary but generally include: records of consent obtained, evidence of unsubscribe request processing, and proof of sender identification compliance. Most APAC laws include penalties for both senders and promoters-the company whose products are advertised shares liability with the technical sender. The common thread is consent-first approach with accountability-building compliant APAC email programs requires consent infrastructure and documentation practices.