How can I manage compliance across different regions?

The simplest approach is adopting the strictest standard globally-typically GDPR or CASL requirements, and applying them to all subscribers regardless of location. If you require explicit opt-in consent, document it thoroughly, honor individual rights requests promptly, and include all required disclosures, you'll satisfy virtually every jurisdiction. This eliminates segmentation complexity.

If business requirements demand more nuanced approaches, implement geographic segmentation: tag subscribers by country/region at signup and apply appropriate rules. EU subscribers get GDPR treatment; Canadian subscribers get CASL treatment; US subscribers get CAN-SPAM treatment. Your ESP and data systems must support this segmentation and rule application, which adds operational complexity.

Additional strategies: maintain comprehensive consent records that satisfy the most demanding documentation requirements; implement automated rights request handling that can accommodate different jurisdictions' timelines; work with legal counsel familiar with international email law for high-stakes campaigns or new market entry. Complexity scales with segmentation-global unified standards are simpler, but geographic customization may be necessary when strict compliance significantly impacts business in permissive jurisdictions.