Skip to content
Corven Email SDK
Esc
↑↓navigate↵open⌘Jpreview
On this page

Resend

Send literal messages through Resend with native idempotency and scheduling.

Import resendEmailLayer from @corven/email-sdk/resend to provide the common Email service for this account.

Configure the account

import { Layer } from "effect";
import type { Redacted } from "effect";
import { resendEmailLayer } from "@corven/email-sdk/resend";
import { emailHttpLayer } from "./sending.js";

export const configuredResendAccount = (apiKey: Redacted.Redacted) =>
  resendEmailLayer({ apiKey }).pipe(Layer.provide(emailHttpLayer));

The example reuses the explicit HTTP Layer. Acquire credentials in trusted host code, then provide this account Layer to your sending program.

Message behavior

  • Resend accepts unique custom headers, inline attachments and tags, but not common message metadata.
  • Use a future schedule within 30 days. A parsed timestamp still has to pass the provider check at dispatch.

Idempotency

Native idempotency applies to the configured account and unchanged request for 24 hours. Use the same key when retrying the operation.

Read field support before switching accounts, and receipts and retries before adding recovery behavior. Configuration and local validation do not authenticate the account or prove delivery.