fix(emails): remove unused useCustomFromFormat param (#1082)

* fix(mailer): remove unused useCustomFormat

* bun.lock changes

Author: waleedlatif1

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

@@ -250,7 +250,6 @@ async function sendInvitationEmail({
       html: emailHtml,
       from: fromAddress,
       emailType: 'transactional',
-      useCustomFromFormat: true,
     })
 
     if (result.success) {

apps/sim/lib/email/mailer.test.ts

@@ -218,23 +218,6 @@ describe('mailer', () => {
       )
     })
 
-    it('should use custom from format when useCustomFromFormat is true', async () => {
-      const result = await sendEmail({
-        ...testEmailOptions,
-        from: 'Sim <noreply@sim.ai>',
-        useCustomFromFormat: true,
-      })
-
-      expect(result.success).toBe(true)
-
-      // Should call Resend with the exact from address provided (no modification)
-      expect(mockSend).toHaveBeenCalledWith(
-        expect.objectContaining({
-          from: 'Sim <noreply@sim.ai>', // Uses custom format as-is
-        })
-      )
-    })
-
     it.concurrent('should replace unsubscribe token placeholders in HTML', async () => {
       const htmlWithPlaceholder = '<p>Content</p><a href="{{UNSUBSCRIBE_TOKEN}}">Unsubscribe</a>'
 

apps/sim/lib/email/mailer.ts

@@ -26,7 +26,6 @@ export interface EmailOptions {
   includeUnsubscribe?: boolean
   attachments?: EmailAttachment[]
   replyTo?: string
-  useCustomFromFormat?: boolean // If true, uses "from" as-is; if false, uses default FROM_EMAIL_ADDRESS format
 }
 
 export interface BatchEmailOptions {
@@ -55,7 +54,6 @@ interface ProcessedEmailData {
   headers: Record<string, string>
   attachments?: EmailAttachment[]
   replyTo?: string
-  useCustomFromFormat: boolean
 }
 
 const resendApiKey = env.RESEND_API_KEY
@@ -149,7 +147,6 @@ async function processEmailData(options: EmailOptions): Promise<ProcessedEmailDa
     includeUnsubscribe = true,
     attachments,
     replyTo,
-    useCustomFromFormat = false,
   } = options
 
   const senderEmail = from || getFromEmailAddress()
@@ -186,14 +183,13 @@ async function processEmailData(options: EmailOptions): Promise<ProcessedEmailDa
     headers,
     attachments,
     replyTo,
-    useCustomFromFormat,
   }
 }
 
 async function sendWithResend(data: ProcessedEmailData): Promise<SendEmailResult> {
   if (!resend) throw new Error('Resend not configured')
 
-  const fromAddress = data.useCustomFromFormat ? data.senderEmail : data.senderEmail
+  const fromAddress = data.senderEmail
 
   const emailData: any = {
     from: fromAddress,