diff --git a/types/defines/email.d.ts b/types/defines/email.d.ts
index 2288f374a42..2ca006cb584 100644
--- a/types/defines/email.d.ts
+++ b/types/defines/email.d.ts
@@ -77,11 +77,11 @@ interface SendEmail {
   send(message: EmailMessage): Promise<EmailSendResult>;
   send(builder: {
 		from: string | EmailAddress;
-		to: string | string[];
+		to: string | EmailAddress | (string | EmailAddress)[];
 		subject: string;
 		replyTo?: string | EmailAddress;
-		cc?: string | string[];
-		bcc?: string | string[];
+		cc?: string | EmailAddress | (string | EmailAddress)[];
+		bcc?: string | EmailAddress | (string | EmailAddress)[];
 		headers?: Record<string, string>;
 		text?: string;
 		html?: string;
diff --git a/types/generated-snapshot/experimental/index.d.ts b/types/generated-snapshot/experimental/index.d.ts
index a24240d382e..81bdc3137ab 100755
--- a/types/generated-snapshot/experimental/index.d.ts
+++ b/types/generated-snapshot/experimental/index.d.ts
@@ -13385,11 +13385,11 @@ interface SendEmail {
   send(message: EmailMessage): Promise<EmailSendResult>;
   send(builder: {
     from: string | EmailAddress;
-    to: string | string[];
+    to: string | EmailAddress | (string | EmailAddress)[];
     subject: string;
     replyTo?: string | EmailAddress;
-    cc?: string | string[];
-    bcc?: string | string[];
+    cc?: string | EmailAddress | (string | EmailAddress)[];
+    bcc?: string | EmailAddress | (string | EmailAddress)[];
     headers?: Record<string, string>;
     text?: string;
     html?: string;
diff --git a/types/generated-snapshot/experimental/index.ts b/types/generated-snapshot/experimental/index.ts
index a221881cb04..2ac8e8855d4 100755
--- a/types/generated-snapshot/experimental/index.ts
+++ b/types/generated-snapshot/experimental/index.ts
@@ -13409,11 +13409,11 @@ export interface SendEmail {
   send(message: EmailMessage): Promise<EmailSendResult>;
   send(builder: {
     from: string | EmailAddress;
-    to: string | string[];
+    to: string | EmailAddress | (string | EmailAddress)[];
     subject: string;
     replyTo?: string | EmailAddress;
-    cc?: string | string[];
-    bcc?: string | string[];
+    cc?: string | EmailAddress | (string | EmailAddress)[];
+    bcc?: string | EmailAddress | (string | EmailAddress)[];
     headers?: Record<string, string>;
     text?: string;
     html?: string;
diff --git a/types/generated-snapshot/latest/index.d.ts b/types/generated-snapshot/latest/index.d.ts
index 989b8c88bbf..ee157251900 100755
--- a/types/generated-snapshot/latest/index.d.ts
+++ b/types/generated-snapshot/latest/index.d.ts
@@ -12717,11 +12717,11 @@ interface SendEmail {
   send(message: EmailMessage): Promise<EmailSendResult>;
   send(builder: {
     from: string | EmailAddress;
-    to: string | string[];
+    to: string | EmailAddress | (string | EmailAddress)[];
     subject: string;
     replyTo?: string | EmailAddress;
-    cc?: string | string[];
-    bcc?: string | string[];
+    cc?: string | EmailAddress | (string | EmailAddress)[];
+    bcc?: string | EmailAddress | (string | EmailAddress)[];
     headers?: Record<string, string>;
     text?: string;
     html?: string;
diff --git a/types/generated-snapshot/latest/index.ts b/types/generated-snapshot/latest/index.ts
index ed0c2cd4c74..b80b35e5793 100755
--- a/types/generated-snapshot/latest/index.ts
+++ b/types/generated-snapshot/latest/index.ts
@@ -12741,11 +12741,11 @@ export interface SendEmail {
   send(message: EmailMessage): Promise<EmailSendResult>;
   send(builder: {
     from: string | EmailAddress;
-    to: string | string[];
+    to: string | EmailAddress | (string | EmailAddress)[];
     subject: string;
     replyTo?: string | EmailAddress;
-    cc?: string | string[];
-    bcc?: string | string[];
+    cc?: string | EmailAddress | (string | EmailAddress)[];
+    bcc?: string | EmailAddress | (string | EmailAddress)[];
     headers?: Record<string, string>;
     text?: string;
     html?: string;