Bounce & Complaint Handling

import crypto from "crypto";import { type NextRequest, NextResponse } from "next/server";const WEBHOOK_SECRET = process.env.WRAPS_WEBHOOK_SECRET!;export async function POST(request: NextRequest) {  // Verify the webhook signature  const signature = request.headers.get("x-wraps-signature");  if (    !signature ||    !crypto.timingSafeEqual(      Buffer.from(signature),      Buffer.from(WEBHOOK_SECRET),    )  ) {    return NextResponse.json({ error: "Unauthorized" }, { status: 401 });  }  const { event, detail, messageId } = await request.json();  switch (event) {    case "Bounce": {      const { bounceType, bounceSubType, bouncedRecipients } = detail.bounce;      // Permanent = hard bounce. Stop sending to this address, permanently.      if (bounceType === "Permanent") {        // These subtypes mean SES never attempted delivery — the address was        // already suppressed. They do not count toward your bounce rate, and        // they are not new information about the recipient.        const alreadySuppressed =          bounceSubType === "OnAccountSuppressionList" ||          bounceSubType === "OnTenantSuppressionList";        if (!alreadySuppressed) {          for (const r of bouncedRecipients) {            await db.contacts.update({              where: { email: r.emailAddress },              data: { bounced: true, bouncedAt: new Date() },            });          }        }      }      // Transient = soft bounce. Do NOT suppress on the first one — a full      // mailbox today is a deliverable address next week. Count them instead.      if (bounceType === "Transient") {        for (const r of bouncedRecipients) {          await db.contacts.incrementSoftBounce(r.emailAddress);        }      }      break;    }    case "Complaint": {      // Someone hit "mark as spam". Unsubscribe immediately, every time.      for (const r of detail.complaint.complainedRecipients) {        await db.contacts.update({          where: { email: r.emailAddress },          data: { unsubscribed: true, unsubscribedAt: new Date() },        });      }      break;    }    case "Delivery":      // Note: a Delivery event does not mean the message is safe. The      // receiving server can accept a message and bounce it afterward.      break;  }  return NextResponse.json({ received: true });}

import { WrapsEmail } from "@wraps.dev/email";const email = new WrapsEmail({ region: "us-east-1" });// Each address triggers a specific event. None of them affect your// reputation metrics or your daily sending quota.await email.send({  from: "hello@yourapp.com",  to: "bounce@simulator.amazonses.com", // -> Permanent bounce  subject: "Bounce test",  html: "<p>Testing bounce handling</p>",});// Labels let you correlate the event back to the send that caused itawait email.send({  from: "hello@yourapp.com",  to: "bounce+signup-flow@simulator.amazonses.com",  subject: "Bounce test",  html: "<p>Testing bounce handling</p>",});