Versioning and support

SDK packages track the public Sendmux API contracts. A package update can be limited to one language or one surface when the change only affects that package.

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Versioning model

• Current SDK packages are in the 1.x release line.
• Patch versions can differ between packages.
• Generated clients are built from the same public API contracts used by the API reference.
• API contract changes update the relevant SDK output in the same package release.
• Pin the major version your application is tested against. Review package release notes before upgrading.

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Compatibility checks

Check the package registry for the version you install, then compare the package surface with the API reference:

• Use the Sending API for outbound email behaviour.
• Use the Mailbox API for mailbox and message behaviour.
• Use the Management API for team-level resources.
• Use API keys to confirm the key scope before testing.

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Support requests

For SDK help, include:

• Package name and version.
• Language runtime and operating system.
• Command, import path, or client method involved.
• The API surface: Sending, Mailbox, or Management.
• Sanitised request or response details.
• X-Request-Id or meta.request_id from an API response, if present.

Do not include API keys, passwords, tokens, webhook secrets, customer data, or private account details.

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Security reports

Report suspected vulnerabilities privately through contact@sendmux.ai. Do not open a public GitHub issue for security reports.

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Next steps