diff --git a/src/sendEmail.ts b/src/sendEmail.ts
index 9a8136c..6ca74f5 100644
--- a/src/sendEmail.ts
+++ b/src/sendEmail.ts
@@ -89,6 +89,16 @@ export const sendEmail = async <TEmail extends BaseEmailDocument = BaseEmailDocu
   if (emailData.bcc && emailData.bcc !== null) {
     emailData.bcc = parseAndValidateEmails(emailData.bcc as string | string[])
   }
+  if (emailData.replyTo && emailData.replyTo !== null) {
+    const validated = parseAndValidateEmails(emailData.replyTo as string | string[])
+    // replyTo should be a single email, so take the first one if array
+    emailData.replyTo = validated && validated.length > 0 ? validated[0] : undefined
+  }
+  if (emailData.from && emailData.from !== null) {
+    const validated = parseAndValidateEmails(emailData.from as string | string[])
+    // from should be a single email, so take the first one if array
+    emailData.from = validated && validated.length > 0 ? validated[0] : undefined
+  }
 
   // Create the email in the collection with proper typing
   const email = await payload.create({
diff --git a/src/types/index.ts b/src/types/index.ts
index 2e295ca..1e42760 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -75,23 +75,23 @@ export interface MailingTransportConfig {
 
 export interface QueuedEmail {
   id: string
-  template?: string
+  template?: string | null
   to: string[]
-  cc?: string[]
-  bcc?: string[]
-  from?: string
-  replyTo?: string
+  cc?: string[] | null
+  bcc?: string[] | null
+  from?: string | null
+  replyTo?: string | null
   subject: string
   html: string
-  text?: string
-  variables?: Record<string, any>
-  scheduledAt?: string
-  sentAt?: string
+  text?: string | null
+  variables?: Record<string, any> | null
+  scheduledAt?: string | null
+  sentAt?: string | null
   status: 'pending' | 'processing' | 'sent' | 'failed'
   attempts: number
-  lastAttemptAt?: string
-  error?: string
-  priority?: number
+  lastAttemptAt?: string | null
+  error?: string | null
+  priority?: number | null
   createdAt: string
   updatedAt: string
 }