Creates a routing rule that delivers matching inbound mail on one of your domains to a mailbox, or drops it. Routes are evaluated lowest `priority` first, and a mailbox's own address always matches ahead of any route you create; mail that no route matches is still received as a plain received email. The `domain` must be one of your workspace's inbound-enabled domains, and each field's cross-field requirements (see the field descriptions) return `422` when unmet. The domain the route applies to — one of your inbound-enabled custom domains. How the route matches recipients. `address` matches one local part and requires `match_value`; `catch_all` matches every recipient on the domain that nothing else matched. Possible values: `address`, `catch_all` The local part an `address` route matches. Required for `address` routes; stored lowercase. What happens to matching mail. `deliver_to_mailbox` delivers it to `target_mailbox_id` (required); `drop` discards it silently, with nothing stored and no webhook fired. Possible values: `deliver_to_mailbox`, `drop` The mailbox that receives matching mail. Required for `deliver_to_mailbox` routes. Evaluation order — lowest number wins. Explicit routes accept 11–1000; the mailbox's own address always matches at priority 10, so a route can never pre-empt exact-address delivery. Whether the route is evaluated. Inbound route ID. The domain the route applies to. How the route matches recipients. `address` matches one local part; `catch_all` matches every recipient on the domain that nothing else matched. Possible values: `address`, `catch_all` The local part an `address` route matches. Null for `catch_all` routes. What happens to matching mail. `deliver_to_mailbox` delivers it to `target_mailbox_id`; `drop` discards it silently, with nothing stored and no webhook fired. Possible values: `deliver_to_mailbox`, `drop` The mailbox that receives matching mail. Null for `drop` routes. Evaluation order — lowest number wins. Explicit routes accept 11–1000 (default 100); the mailbox's own address always matches at priority 10. Whether the route is evaluated. Disabled routes are kept but skipped. When the route was created. When the route was last updated.