diff --git a/src/domains/domains.ts b/src/domains/domains.ts
index b35a9727..c8f71844 100644
--- a/src/domains/domains.ts
+++ b/src/domains/domains.ts
@@ -51,6 +51,7 @@ export class Domains {
     const data = await this.resend.get<GetDomainResponseSuccess>(
       `/domains/${id}`,
     );
+
     return data;
   }
 
diff --git a/src/emails/emails.spec.ts b/src/emails/emails.spec.ts
index e1c35a39..ceeb74c5 100644
--- a/src/emails/emails.spec.ts
+++ b/src/emails/emails.spec.ts
@@ -184,7 +184,7 @@ describe('Emails', () => {
       const payload: CreateEmailOptions = {
         from: 'admin@resend.com',
         to: 'bu@resend.com',
-        reply_to: ['foo@resend.com', 'bar@resend.com'],
+        replyTo: ['foo@resend.com', 'bar@resend.com'],
         subject: 'Hello World',
         text: 'Hello world',
       };
@@ -252,7 +252,7 @@ describe('Emails', () => {
       const payload: CreateEmailOptions = {
         from: 'resend.com', // Invalid from address
         to: 'bu@resend.com',
-        reply_to: ['foo@resend.com', 'bar@resend.com'],
+        replyTo: ['foo@resend.com', 'bar@resend.com'],
         subject: 'Hello World',
         text: 'Hello world',
       };
diff --git a/src/emails/emails.ts b/src/emails/emails.ts
index 6b7f1a81..a9de4d6e 100644
--- a/src/emails/emails.ts
+++ b/src/emails/emails.ts
@@ -50,7 +50,7 @@ export class Emails {
         from: payload.from,
         headers: payload.headers,
         html: payload.html,
-        reply_to: payload.reply_to,
+        reply_to: payload.replyTo,
         scheduled_at: payload.scheduledAt,
         subject: payload.subject,
         tags: payload.tags,
@@ -67,6 +67,7 @@ export class Emails {
     const data = await this.resend.get<GetEmailResponseSuccess>(
       `/emails/${id}`,
     );
+
     return data;
   }
 
diff --git a/src/emails/interfaces/create-email-options.interface.ts b/src/emails/interfaces/create-email-options.interface.ts
index e19ba31b..0e4a5921 100644
--- a/src/emails/interfaces/create-email-options.interface.ts
+++ b/src/emails/interfaces/create-email-options.interface.ts
@@ -60,7 +60,7 @@ interface CreateEmailBaseOptions {
    *
    * @link https://resend.com/docs/api-reference/emails/send-email#body-parameters
    */
-  reply_to?: string | string[];
+  replyTo?: string | string[];
   /**
    * Email subject.
    *
@@ -111,7 +111,7 @@ interface Attachment {
   /** Path where the attachment file is hosted */
   path?: string;
   /** Optional content type for the attachment, if not set will be derived from the filename property */
-  content_type?: string;
+  contentType?: string;
 }
 
 export type Tag = {