diff --git a/lerna.json b/lerna.json
index bb71d10f41..8ea860e3c4 100644
--- a/lerna.json
+++ b/lerna.json
@@ -1,6 +1,6 @@
 {
   "$schema": "node_modules/lerna/schemas/lerna-schema.json",
-  "version": "3.4.16",
+  "version": "3.4.17",
   "npmClient": "yarn",
   "concurrency": 20,
   "command": {
diff --git a/packages/server/src/automations/tests/steps/sendSmtpEmail.spec.ts b/packages/server/src/automations/tests/steps/sendSmtpEmail.spec.ts
index 7452239dfa..7aff612a97 100644
--- a/packages/server/src/automations/tests/steps/sendSmtpEmail.spec.ts
+++ b/packages/server/src/automations/tests/steps/sendSmtpEmail.spec.ts
@@ -1,3 +1,4 @@
+import { SendEmailResponse } from "@budibase/types"
 import TestConfiguration from "../../../tests/utilities/TestConfiguration"
 import * as workerRequests from "../../../utilities/workerRequests"
 
@@ -5,17 +6,18 @@ jest.mock("../../../utilities/workerRequests", () => ({
   sendSmtpEmail: jest.fn(),
 }))
 
-function generateResponse(to: string, from: string) {
+function generateResponse(to: string, from: string): SendEmailResponse {
   return {
-    success: true,
-    response: {
-      accepted: [to],
-      envelope: {
-        from: from,
-        to: [to],
-      },
-      message: `Email sent to ${to}.`,
+    message: `Email sent to ${to}.`,
+    accepted: [to],
+    envelope: {
+      from: from,
+      to: [to],
     },
+    messageId: "messageId",
+    pending: [],
+    rejected: [],
+    response: "response",
   }
 }
 
diff --git a/packages/server/src/utilities/workerRequests.ts b/packages/server/src/utilities/workerRequests.ts
index 0f487d9f31..dd1493b82f 100644
--- a/packages/server/src/utilities/workerRequests.ts
+++ b/packages/server/src/utilities/workerRequests.ts
@@ -8,7 +8,15 @@ import {
   logging,
   env as coreEnv,
 } from "@budibase/backend-core"
-import { Ctx, User, EmailInvite, EmailAttachment } from "@budibase/types"
+import {
+  Ctx,
+  User,
+  EmailInvite,
+  EmailAttachment,
+  SendEmailResponse,
+  SendEmailRequest,
+  EmailTemplatePurpose,
+} from "@budibase/types"
 
 interface Request {
   ctx?: Ctx
@@ -110,25 +118,23 @@ export async function sendSmtpEmail({
   invite?: EmailInvite
 }) {
   // tenant ID will be set in header
+  const request: SendEmailRequest = {
+    email: to,
+    from,
+    contents,
+    subject,
+    cc,
+    bcc,
+    purpose: EmailTemplatePurpose.CUSTOM,
+    automation,
+    invite,
+    attachments,
+  }
   const response = await fetch(
     checkSlashesInUrl(env.WORKER_URL + `/api/global/email/send`),
-    createRequest({
-      method: "POST",
-      body: {
-        email: to,
-        from,
-        contents,
-        subject,
-        cc,
-        bcc,
-        purpose: "custom",
-        automation,
-        invite,
-        attachments,
-      },
-    })
+    createRequest({ method: "POST", body: request })
   )
-  return checkResponse(response, "send email")
+  return (await checkResponse(response, "send email")) as SendEmailResponse
 }
 
 export async function removeAppFromUserRoles(ctx: Ctx, appId: string) {
diff --git a/packages/types/package.json b/packages/types/package.json
index ee3c059bc9..a6e08ab84c 100644
--- a/packages/types/package.json
+++ b/packages/types/package.json
@@ -17,6 +17,7 @@
     "@budibase/nano": "10.1.5",
     "@types/json-schema": "^7.0.15",
     "@types/koa": "2.13.4",
+    "@types/nodemailer": "^6.4.17",
     "@types/redlock": "4.0.7",
     "koa-useragent": "^4.1.0",
     "rimraf": "3.0.2",
diff --git a/packages/types/src/api/web/global/email.ts b/packages/types/src/api/web/global/email.ts
index a0ca0e8485..3d2e007231 100644
--- a/packages/types/src/api/web/global/email.ts
+++ b/packages/types/src/api/web/global/email.ts
@@ -1,4 +1,5 @@
 import { EmailAttachment, EmailInvite } from "../../../documents"
+import SMTPTransport from "nodemailer/lib/smtp-transport"
 
 export enum EmailTemplatePurpose {
   CORE = "core",
@@ -12,17 +13,17 @@ export enum EmailTemplatePurpose {
 export interface SendEmailRequest {
   workspaceId?: string
   email: string
-  userId: string
+  userId?: string
   purpose: EmailTemplatePurpose
   contents?: string
   from?: string
   subject: string
-  cc?: boolean
-  bcc?: boolean
+  cc?: string
+  bcc?: string
   automation?: boolean
   invite?: EmailInvite
   attachments?: EmailAttachment[]
 }
-export interface SendEmailResponse extends Record<string, any> {
+export interface SendEmailResponse extends SMTPTransport.SentMessageInfo {
   message: string
 }
diff --git a/packages/types/src/documents/app/automation/automation.ts b/packages/types/src/documents/app/automation/automation.ts
index d5ef35d059..cfe2ba5147 100644
--- a/packages/types/src/documents/app/automation/automation.ts
+++ b/packages/types/src/documents/app/automation/automation.ts
@@ -1,10 +1,10 @@
 import { Document } from "../../document"
 import { User } from "../../global"
-import { ReadStream } from "fs"
 import { Row } from "../row"
 import { Table } from "../table"
 import { AutomationStep, AutomationTrigger } from "./schema"
 import { ContextEmitter } from "../../../sdk"
+import { Readable } from "stream"
 
 export enum AutomationIOType {
   OBJECT = "object",
@@ -108,8 +108,8 @@ export interface SendEmailOpts {
   subject: string
   // info Pass in a structure of information to be stored alongside the invitation.
   info?: any
-  cc?: boolean
-  bcc?: boolean
+  cc?: string
+  bcc?: string
   automation?: boolean
   invite?: EmailInvite
   attachments?: EmailAttachment[]
@@ -269,7 +269,7 @@ export type AutomationAttachment = {
 
 export type AutomationAttachmentContent = {
   filename: string
-  content: ReadStream | NodeJS.ReadableStream
+  content: Readable
 }
 
 export type BucketedContent = AutomationAttachmentContent & {
diff --git a/packages/worker/package.json b/packages/worker/package.json
index 28728272ca..edaab50d78 100644
--- a/packages/worker/package.json
+++ b/packages/worker/package.json
@@ -86,6 +86,7 @@
     "@types/koa__router": "12.0.4",
     "@types/lodash": "4.14.200",
     "@types/node-fetch": "2.6.4",
+    "@types/nodemailer": "^6.4.17",
     "@types/server-destroy": "1.0.1",
     "@types/supertest": "2.0.14",
     "@types/uuid": "8.3.4",
diff --git a/packages/worker/src/api/controllers/global/email.ts b/packages/worker/src/api/controllers/global/email.ts
index ad0fc3fa32..ed2d9b5125 100644
--- a/packages/worker/src/api/controllers/global/email.ts
+++ b/packages/worker/src/api/controllers/global/email.ts
@@ -24,10 +24,13 @@ export async function sendEmail(
     invite,
     attachments,
   } = ctx.request.body
-  let user: any
+  let user: User | undefined = undefined
   if (userId) {
     const db = tenancy.getGlobalDB()
-    user = await db.get<User>(userId)
+    user = await db.tryGet<User>(userId)
+  }
+  if (!user) {
+    ctx.throw(404, "User not found.")
   }
   const response = await sendEmailFn(email, purpose, {
     workspaceId,
diff --git a/packages/worker/src/utilities/email.ts b/packages/worker/src/utilities/email.ts
index fa9dd7a6fa..a2b9c3bfc2 100644
--- a/packages/worker/src/utilities/email.ts
+++ b/packages/worker/src/utilities/email.ts
@@ -13,7 +13,8 @@ import { configs, cache, objectStore } from "@budibase/backend-core"
 import ical from "ical-generator"
 import _ from "lodash"
 
-const nodemailer = require("nodemailer")
+import nodemailer from "nodemailer"
+import SMTPTransport from "nodemailer/lib/smtp-transport"
 
 const TEST_MODE = env.ENABLE_EMAIL_TEST_MODE && env.isDev()
 const TYPE = TemplateType.EMAIL
@@ -26,7 +27,7 @@ const FULL_EMAIL_PURPOSES = [
 ]
 
 function createSMTPTransport(config?: SMTPInnerConfig) {
-  let options: any
+  let options: SMTPTransport.Options
   let secure = config?.secure
   // default it if not specified
   if (secure == null) {
@@ -161,7 +162,7 @@ export async function sendEmail(
   const code = await getLinkCode(purpose, email, opts.user, opts?.info)
   let context = await getSettingsTemplateContext(purpose, code)
 
-  let message: any = {
+  let message: Parameters<typeof transport.sendMail>[0] = {
     from: opts?.from || config?.from,
     html: await buildEmail(purpose, email, context, {
       user: opts?.user,
diff --git a/yarn.lock b/yarn.lock
index 8f611e224c..3e2bd6140b 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2785,9 +2785,9 @@
     through2 "^2.0.0"
 
 "@budibase/pro@npm:@budibase/pro@latest":
-  version "3.4.12"
-  resolved "https://registry.yarnpkg.com/@budibase/pro/-/pro-3.4.12.tgz#60e630944de4e2de970a04179d8f0f57d48ce75e"
-  integrity sha512-msUBmcWxRDg+ugjZvd27XudERQqtQRdiARsO8MaDVTcp5ejIXgshEIVVshHOCj3hcbRblw9pXvBIMI53iTMUsA==
+  version "3.4.16"
+  resolved "https://registry.yarnpkg.com/@budibase/pro/-/pro-3.4.16.tgz#c482a400e27b7e89ca73092c4c81bdeac1d24581"
+  integrity sha512-8ECnqOh9jQ10KlQEwmKPFcoVGE+2gGgSybj+vbshwDp1zAW76doyMR2DMNjEatNpWVnpoMnTkDWtE9aqQ5v0vQ==
   dependencies:
     "@anthropic-ai/sdk" "^0.27.3"
     "@budibase/backend-core" "*"
@@ -6775,6 +6775,13 @@
   dependencies:
     undici-types "~6.19.2"
 
+"@types/nodemailer@^6.4.17":
+  version "6.4.17"
+  resolved "https://registry.yarnpkg.com/@types/nodemailer/-/nodemailer-6.4.17.tgz#5c82a42aee16a3dd6ea31446a1bd6a447f1ac1a4"
+  integrity sha512-I9CCaIp6DTldEg7vyUTZi8+9Vo0hi1/T8gv3C89yk1rSAAzoKQ8H8ki/jBYJSFoH/BisgLP8tkZMlQ91CIquww==
+  dependencies:
+    "@types/node" "*"
+
 "@types/normalize-package-data@^2.4.0":
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/@types/normalize-package-data/-/normalize-package-data-2.4.1.tgz#d3357479a0fdfdd5907fe67e17e0a85c906e1301"