| Native BSM (Buyer-Seller Messaging) |
Sellers reply to buyer messages directly inside Amazon Seller Central. |
No extra integration required, but you must switch accounts between storefronts, monitoring is hard to centralize, and efficiency drops as message volume grows. |
| CSBA (Customer Service by Amazon) |
Portions of the customer service workload are handled by Amazon's team. |
Reduces internal workload, but seller control over answer quality and brand communication style becomes more limited. |
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Third-Party Workspace via SP-API
Recommended
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Amazon messages are pulled into the Udesk workspace via the official SP-API integration and managed centrally. |
One interface for many storefronts, with support for automation, team collaboration, SLA control, and service reporting. Best for sellers operating multiple storefronts. |
| Open a Case to Amazon |
Sellers open a case ticket to Amazon for issues that need platform-side handling. |
Suitable for policy, account, or specific dispute issues — not a channel for day-to-day buyer conversations. |