Struct SendContext 

pub struct SendContext<'a> {
    pub send_id: Option<&'a str>,
    pub tenant: Option<&'a str>,
}

The per-dispatch context a send carries beyond the sender and the request: the correlation send-id and the tenant scope.

The send_id is the host’s per-dispatch idempotency token (see idempotency_token); the transport uses it two ways — as the VERP bounces+<send-id>@… Return-Path that correlates an inbound bounce/challenge/reply back to this send, and as an exactly-once key so a durable retry of an already-sent dispatch does not double-send. The tenant scopes the send-status and suppression rows the transport reads/writes. Both are Option because a zero-config deployment (no HMAC secret, no tenant) sends without correlation or tenant scoping.

A named struct rather than positional Option<&str> parameters: send_id and tenant are both optional strings and would be trivially transposable at the call site.

Fields

send_id: Option<&'a str>

The per-dispatch VERP send-id / exactly-once key. None → the transport sends with no VERP Return-Path and no exactly-once dedup.

tenant: Option<&'a str>

The tenant the send is scoped to (RLS stamp on send-status / suppression rows). None → single-tenant.

Trait Implementations

impl<'a> Clone for SendContext<'a>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<'a> Copy for SendContext<'a>

impl<'a> Debug for SendContext<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Default for SendContext<'a>

fn default() -> Self

Returns the “default value” for a type.