diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1d7a659..5b19481 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [1.0.0] - 2024
+## [1.1.0] - July 31, 2026
+
+### Added
+
+- Uninstall handler (via `register_uninstall_hook`) to remove Resend WordPress Plugin's stored options (`resend_api_key`, `resend_from_name`, `resend_from_address`) when the plugin is deleted ([#11](https://github.com/resend/resend-wordpress/issues/11))
+
+## [1.0.0] - July 26, 2026
 
 ### Added
 - Initial release of Resend WordPress Plugin
@@ -59,4 +65,4 @@ None reported yet.
 For issues, feature requests, or questions:
 - [GitHub Issues](https://github.com/resend/resend-wordpress/issues)
 - [Resend Support](https://resend.com/help)
-- [Documentation](https://resend.com/docs)
\ No newline at end of file
+- [Documentation](https://resend.com/docs)
diff --git a/class-resend.php b/class-resend.php
index 0c6da7e..e666a4b 100644
--- a/class-resend.php
+++ b/class-resend.php
@@ -62,6 +62,36 @@ public static function plugin_activation() {
 	public static function plugin_deactivation() {
 	}
 
+	/**
+	 * Handle plugin uninstall tasks.
+	 *
+	 * @return void
+	 */
+	public static function plugin_uninstall() {
+		if ( is_multisite() ) {
+			$site_ids = get_sites( array( 'fields' => 'ids' ) );
+
+			foreach ( $site_ids as $site_id ) {
+				switch_to_blog( $site_id );
+				self::delete_plugin_data();
+				restore_current_blog();
+			}
+		} else {
+			self::delete_plugin_data();
+		}
+	}
+
+	/**
+	 * Delete all Resend plugin options for the current site.
+	 *
+	 * @return void
+	 */
+	private static function delete_plugin_data() {
+		delete_option( 'resend_api_key' );
+		delete_option( 'resend_from_name' );
+		delete_option( 'resend_from_address' );
+	}
+
 	/**
 	 * Retrieve the stored Resend API key.
 	 *
diff --git a/readme.txt b/readme.txt
index fd82f5e..699f124 100644
--- a/readme.txt
+++ b/readme.txt
@@ -109,6 +109,10 @@ The plugin works with WordPress multisite, but each site will need its own Resen
 
 When you deactivate the plugin, WordPress will revert to its default email sending behavior. Any emails queued in Resend will still be sent normally.
 
+= What happens to my data if I delete the plugin? =
+
+When you delete the plugin from the Plugins page, your Resend settings (API key, sender name, sender email) are removed from the database. Simply deactivating the plugin does not remove this data.
+
 = Does this support attachments? =
 
 Yes, if the Resend API supports it. The plugin uses the standard `wp_mail()` function which supports attachments.
@@ -119,6 +123,9 @@ Yes! You can set a custom sender email and name in the plugin settings page.
 
 == Changelog ==
 
+= 1.1.0 =
+* Plugin data is now removed on uninstall
+
 = 1.0.0 =
 * Initial release
 * Basic email sending via Resend API
@@ -136,6 +143,7 @@ Yes! You can set a custom sender email and name in the plugin settings page.
 == Support ==
 
 For support, feature requests, or bug reports, please visit:
+
 * [GitHub Issues](https://github.com/resend/resend-wordpress/issues)
 * [Resend Support](https://resend.com/help)
 
diff --git a/resend.php b/resend.php
index 6995e30..773e7be 100644
--- a/resend.php
+++ b/resend.php
@@ -46,6 +46,7 @@ function wp_mail_already_declared_notice() {
 
 register_activation_hook( __FILE__, array( 'Resend', 'plugin_activation' ) );
 register_deactivation_hook( __FILE__, array( 'Resend', 'plugin_deactivation' ) );
+register_uninstall_hook( __FILE__, array( 'Resend', 'plugin_uninstall' ) );
 
 require_once RESEND__PLUGIN_DIR . 'class-resend.php';