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Suppressions management expanded across the Go, Python, and Node SDKs, with Node adding suppression webhooks.

Suppressions reached every SDK. Node SDK v6.18.1 added suppression webhooks; Go v3.12.0 and Python v2.35.0 added suppressions endpoints. Python also now preserves original HTTP status codes on API errors.

React Email editor built out body spacing controls.

• Body margin and padding are now theme-driven and editable from the inspector, with the minimal theme exposing a Margin input; code blocks keep their theme, language, and styling when an email is re-imported.
• The basic theme container centers by default, and collaborative sync no longer produces duplicated containers.
• react-email@6.9.1 restored Tailwind dark: and other media-query variants that tailwindcss 4.3.3+ dropped, and hardened static asset serving against path escape on the preview server.

MCP email tools gained agent-friendly additions.

• send-email and send-batch-emails accept idempotencyKey, results surface message_id, and From accepts display-name addresses.