diff --git a/app/emails/mail.server.ts b/app/emails/mail.server.ts
index c0845fc0d..69e469e8c 100644
--- a/app/emails/mail.server.ts
+++ b/app/emails/mail.server.ts
@@ -38,8 +38,8 @@ export const sendEmail = async ({
   try {
     // send mail with defined transport object
     await transporter.sendMail({
-      from: from || SMTP_FROM || `"Shelf" <no-reply@emails.shelf.nu>`, // sender address
-      ...(replyTo && { replyTo }), // reply to
+      from: from || SMTP_FROM || `"Shelf" <updates@emails.shelf.nu>`, // sender address
+      replyTo: replyTo || "support@shelf.nu", // reply to
       to, // list of receivers
       subject, // Subject line
       text, // plain text body
@@ -80,3 +80,37 @@ export const sendEmail = async ({
   // Preview only available when sending through an Ethereal account
   // console.log("Preview URL: %s", nodemailer.getTestMessageUrl(info));
 };
+
+/** Utility function to add delay between operations */
+async function delay(ms: number): Promise<void> {
+  return new Promise((resolve) => setTimeout(resolve, ms));
+}
+
+/** Process emails in batches with rate limiting
+ * @param emails - Array of email configurations to send
+ * @param batchSize - Number of emails to process per batch (default: 2)
+ * @param delayMs - Milliseconds to wait between batches (default: 1000ms)
+ */
+export async function sendEmailsWithRateLimit(
+  emails: Array<{
+    to: string;
+    subject: string;
+    text: string;
+    html: string;
+  }>,
+  batchSize = 2,
+  delayMs = 1100
+): Promise<void> {
+  for (let i = 0; i < emails.length; i += batchSize) {
+    // Process emails in batches of specified size
+    const batch = emails.slice(i, i + batchSize);
+
+    // Send emails in current batch concurrently
+    await Promise.all(batch.map((email) => sendEmail(email)));
+
+    // If there are more emails to process, add delay before next batch
+    if (i + batchSize < emails.length) {
+      await delay(delayMs);
+    }
+  }
+}
diff --git a/app/modules/booking/service.server.ts b/app/modules/booking/service.server.ts
index a4b394cf2..de7b894e8 100644
--- a/app/modules/booking/service.server.ts
+++ b/app/modules/booking/service.server.ts
@@ -10,7 +10,7 @@ import type {
 } from "@prisma/client";
 import { db } from "~/database/db.server";
 import { bookingUpdatesTemplateString } from "~/emails/bookings-updates-template";
-import { sendEmail } from "~/emails/mail.server";
+import { sendEmail, sendEmailsWithRateLimit } from "~/emails/mail.server";
 import { getStatusClasses, isOneDayEvent } from "~/utils/calendar";
 import { getDateTimeFormat } from "~/utils/client-hints";
 import { calcTimeDifference } from "~/utils/date-fns";
@@ -1317,38 +1317,31 @@ export async function bulkDeleteBookings({
       bookingsWithSchedulerReference.map((booking) => cancelScheduler(booking))
     );
 
-    /** Sending mails to required users  */
-    await Promise.all(
-      bookingsToSendEmail.map((b) => {
-        const subject = `Booking deleted (${b.name}) - shelf.nu`;
-        const text = deletedBookingEmailContent({
-          bookingName: b.name,
-          assetsCount: b.assets.length,
-          custodian:
-            `${b.custodianUser?.firstName} ${b.custodianUser?.lastName}` ||
-            (b.custodianTeamMember?.name as string),
-          from: b.from as Date,
-          to: b.to as Date,
-          bookingId: b.id,
-          hints,
-        });
-
-        const html = bookingUpdatesTemplateString({
-          booking: b,
-          heading: `Your booking as been deleted: "${b.name}"`,
-          assetCount: b.assets.length,
-          hints,
-          hideViewButton: true,
-        });
+    const emailConfigs = bookingsToSendEmail.map((b) => ({
+      to: b.custodianUser?.email ?? "",
+      subject: `Booking deleted (${b.name}) - shelf.nu`,
+      text: deletedBookingEmailContent({
+        bookingName: b.name,
+        assetsCount: b.assets.length,
+        custodian:
+          `${b.custodianUser?.firstName} ${b.custodianUser?.lastName}` ||
+          (b.custodianTeamMember?.name as string),
+        from: b.from as Date,
+        to: b.to as Date,
+        bookingId: b.id,
+        hints,
+      }),
+      html: bookingUpdatesTemplateString({
+        booking: b,
+        heading: `Your booking as been deleted: "${b.name}"`,
+        assetCount: b.assets.length,
+        hints,
+        hideViewButton: true,
+      }),
+    }));
 
-        return sendEmail({
-          to: b.custodianUser?.email ?? "",
-          subject,
-          text,
-          html,
-        });
-      })
-    );
+    // Send emails with rate limiting
+    return await sendEmailsWithRateLimit(emailConfigs);
   } catch (cause) {
     const message =
       cause instanceof ShelfError
diff --git a/app/routes/_layout+/account-details.general.tsx b/app/routes/_layout+/account-details.general.tsx
index 44d699915..a88671225 100644
--- a/app/routes/_layout+/account-details.general.tsx
+++ b/app/routes/_layout+/account-details.general.tsx
@@ -182,7 +182,7 @@ export async function action({ context, request }: ActionFunctionArgs) {
         }
 
         void sendEmail({
-          to: ADMIN_EMAIL || `"Shelf" <no-reply@emails.shelf.nu>`,
+          to: ADMIN_EMAIL || `"Shelf" <updates@emails.shelf.nu>`,
           subject: "Delete account request",
           text: `User with id ${userId} and email ${payload.email} has requested to delete their account. \n User: ${SERVER_URL}/admin-dashboard/${userId} \n\n Reason: ${reason}\n\n`,
         });