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Sender domains are provisioned in a specific sending region. Choose the region when you create the domain; the region determines where Dugble provisions the underlying email sending infrastructure for that domain.

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Supported regions

Dugble currently supports these sender-domain regions: Requests using another region are rejected as unsupported.

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TLS mode

When creating a sender domain, you can also set tls to one of:
  • opportunistic — the default when tls is omitted.
  • enforced — records an enforced TLS preference for the sender domain.
The domain API accepts only name, region, and optional tls as sender-domain configuration. Tracking options, receiving capabilities, and custom return-path configuration are not customer-configurable domain fields.
Choose the region closest to your operational requirements and keep the same region when recreating or transferring sender-domain infrastructure.