fix(emails): fix base URL

apps/sim/app/api/help/route.ts

@@ -3,12 +3,11 @@ import { Resend } from 'resend'
 import { z } from 'zod'
 import { env } from '@/lib/env'
 import { createLogger } from '@/lib/logs/console-logger'
-import { getBaseDomain } from '@/lib/urls/utils'
+import { getEmailDomain } from '@/lib/urls/utils'
 
 const resend = env.RESEND_API_KEY ? new Resend(env.RESEND_API_KEY) : null
 const logger = createLogger('HelpAPI')
 
-// Define schema for validation
 const helpFormSchema = z.object({
   email: z.string().email('Invalid email address'),
   subject: z.string().min(1, 'Subject is required'),
@@ -99,8 +98,8 @@ ${message}
 
     // Send email using Resend
     const { data, error } = await resend.emails.send({
-      from: `Sim Studio <noreply@${getBaseDomain()}>`,
-      to: [`help@${getBaseDomain()}`],
+      from: `Sim Studio <noreply@${getEmailDomain()}>`,
+      to: [`help@${getEmailDomain()}`],
       subject: `[${type.toUpperCase()}] ${subject}`,
       replyTo: email,
       text: emailText,
@@ -122,7 +121,7 @@ ${message}
     // Send confirmation email to the user
     await resend.emails
       .send({
-        from: `Sim Studio <noreply@${getBaseDomain()}>`,
+        from: `Sim Studio <noreply@${getEmailDomain()}>`,
         to: [email],
         subject: `Your ${type} request has been received: ${subject}`,
         text: `
@@ -137,8 +136,8 @@ ${images.length > 0 ? `You attached ${images.length} image(s).` : ''}
 
 Best regards,
 The Sim Studio Team
-      `,
-        replyTo: `help@${getBaseDomain()}`,
+        `,
+        replyTo: `help@${getEmailDomain()}`,
       })
       .catch((err) => {
         logger.warn(`[${requestId}] Failed to send confirmation email`, err)

apps/sim/app/api/workspaces/invitations/route.ts

@@ -7,7 +7,7 @@ import { WorkspaceInvitationEmail } from '@/components/emails/workspace-invitati
 import { getSession } from '@/lib/auth'
 import { env } from '@/lib/env'
 import { createLogger } from '@/lib/logs/console-logger'
-import { getBaseDomain } from '@/lib/urls/utils'
+import { getEmailDomain } from '@/lib/urls/utils'
 import { db } from '@/db'
 import { user, workspace, workspaceInvitation, workspaceMember } from '@/db/schema'
 
@@ -229,7 +229,7 @@ async function sendInvitationEmail({
     }
 
     await resend.emails.send({
-      from: `noreply@${getBaseDomain()}`,
+      from: `noreply@${getEmailDomain()}`,
       to,
       subject: `You've been invited to join "${workspaceName}" on Sim Studio`,
       html: emailHtml,

apps/sim/lib/auth.ts

@@ -17,7 +17,7 @@ import { createLogger } from '@/lib/logs/console-logger'
 import { db } from '@/db'
 import * as schema from '@/db/schema'
 import { env } from './env'
-import { getBaseDomain } from './urls/utils'
+import { getEmailDomain } from './urls/utils'
 
 const logger = createLogger('Auth')
 
@@ -147,7 +147,7 @@ export const auth = betterAuth({
       const html = await renderPasswordResetEmail(username, url)
 
       const result = await resend.emails.send({
-        from: `Sim Studio <team@${getBaseDomain()}>`,
+        from: `Sim Studio <team@${getEmailDomain()}>`,
         to: user.email,
         subject: getEmailSubject('reset-password'),
         html,
@@ -189,7 +189,7 @@ export const auth = betterAuth({
 
           // In production, send an actual email
           const result = await resend.emails.send({
-            from: `Sim Studio <onboarding@${getBaseDomain()}>`,
+            from: `Sim Studio <onboarding@${getEmailDomain()}>`,
             to: data.email,
             subject: getEmailSubject(data.type),
             html,
@@ -1144,7 +1144,7 @@ export const auth = betterAuth({
                 )
 
                 await resend.emails.send({
-                  from: `Sim Studio <team@${getBaseDomain()}>`,
+                  from: `Sim Studio <team@${getEmailDomain()}>`,
                   to: invitation.email,
                   subject: `${inviterName} has invited you to join ${organization.name} on Sim Studio`,
                   html,

apps/sim/lib/mailer.ts

@@ -1,7 +1,7 @@
 import { Resend } from 'resend'
 import { createLogger } from '@/lib/logs/console-logger'
 import { env } from './env'
-import { getBaseDomain } from './urls/utils'
+import { getEmailDomain } from './urls/utils'
 
 interface EmailOptions {
   to: string
@@ -42,7 +42,7 @@ export async function sendEmail({
   from,
 }: EmailOptions): Promise<SendEmailResult> {
   try {
-    const senderEmail = from || `noreply@${getBaseDomain()}`
+    const senderEmail = from || `noreply@${getEmailDomain()}`
 
     if (!resend) {
       logger.info('Email not sent (Resend not configured):', {
@@ -90,7 +90,7 @@ export async function sendBatchEmails({
   emails,
 }: BatchEmailOptions): Promise<BatchSendEmailResult> {
   try {
-    const senderEmail = `noreply@${getBaseDomain()}`
+    const senderEmail = `noreply@${getEmailDomain()}`
     const results: SendEmailResult[] = []
 
     if (!resend) {
@@ -98,7 +98,6 @@ export async function sendBatchEmails({
         emailCount: emails.length,
       })
 
-      // Create mock results for each email
       emails.forEach(() => {
         results.push({
           success: true,
@@ -115,7 +114,6 @@ export async function sendBatchEmails({
       }
     }
 
-    // Prepare emails for batch sending
     const batchEmails = emails.map((email) => ({
       from: `Sim Studio <${email.from || senderEmail}>`,
       to: email.to,
@@ -123,8 +121,6 @@ export async function sendBatchEmails({
       html: email.html,
     }))
 
-    // Send batch emails (maximum 100 per batch as per Resend API limits)
-    // Process in chunks of 50 to be safe
     const BATCH_SIZE = 50
     let allSuccessful = true
 

apps/sim/lib/urls/utils.ts

@@ -39,3 +39,17 @@ export function getBaseDomain(): string {
     }
   }
 }
+
+/**
+ * Returns the domain for email addresses, stripping www subdomain for Resend compatibility
+ * @returns The email domain (e.g., 'simstudio.ai' instead of 'www.simstudio.ai')
+ */
+export function getEmailDomain(): string {
+  try {
+    const baseDomain = getBaseDomain()
+    return baseDomain.startsWith('www.') ? baseDomain.substring(4) : baseDomain
+  } catch (_e) {
+    const isProd = process.env.NODE_ENV === 'production'
+    return isProd ? 'simstudio.ai' : 'localhost:3000'
+  }
+}