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Amazon SES now supports S/MIME email signing

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AWS·Sep 3, 2026, 07:00 AMFeatureSecurity-relevantAI-assisted summary

Summary

Adds native S/MIME signing support using certificates stored in AWS Certificate Manager.
SES automatically signs outgoing emails, eliminating the need for manual signing by senders.
Feature is available in all AWS regions and falls back to regular email for clients without S/MIME support.

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Official source Last checked Sep 20, 2026, 3:04 PM

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