diff --git a/Sources/AppcuesNotificationService/AppcuesNotificationServiceExtension.swift b/Sources/AppcuesNotificationService/AppcuesNotificationServiceExtension.swift
new file mode 100644
index 000000000..2a0726879
--- /dev/null
+++ b/Sources/AppcuesNotificationService/AppcuesNotificationServiceExtension.swift
@@ -0,0 +1,73 @@
+//
+//  AppcuesNotificationServiceExtension.swift
+//  AppcuesNotificationService
+//
+//  Created by Matt on 2024-03-12.
+//  Copyright © 2024 Appcues. All rights reserved.
+//
+
+import UserNotifications
+
+/// `UNNotificationServiceExtension` subclass that implements Appcues functionality.
+///
+/// ## Basic Usage
+/// ```swift
+/// // In your Notification Service Extension
+/// import AppcuesNotificationService
+/// class NotificationService: AppcuesNotificationServiceExtension {}
+/// ```
+open class AppcuesNotificationServiceExtension: UNNotificationServiceExtension {
+
+    var contentHandler: ((UNNotificationContent) -> Void)?
+    var bestAttemptContent: UNMutableNotificationContent?
+
+    override public func didReceive(
+        _ request: UNNotificationRequest,
+        withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void
+    ) {
+        self.contentHandler = contentHandler
+        bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
+
+        if let attachment = request.attachment {
+            bestAttemptContent?.attachments = [attachment]
+        }
+
+        contentHandler(bestAttemptContent ?? request.content)
+    }
+
+    override public func serviceExtensionTimeWillExpire() {
+        // Called just before the extension will be terminated by the system.
+        // Use this as an opportunity to deliver your "best attempt" at modified content, otherwise the original push payload will be used.
+        if let contentHandler = contentHandler, let bestAttemptContent = bestAttemptContent {
+            contentHandler(bestAttemptContent)
+        }
+    }
+}
+
+extension UNNotificationRequest {
+    var attachment: UNNotificationAttachment? {
+        guard let attachment = content.userInfo["appcues_attachment_url"] as? String,
+              let attachmentType = content.userInfo["appcues_attachment_type"] as? String,
+              let attachmentURL = URL(string: attachment),
+              let imageData = try? Data(contentsOf: attachmentURL) else {
+            return nil
+        }
+        return try? UNNotificationAttachment(data: imageData, dataType: attachmentType, options: nil)
+    }
+}
+
+extension UNNotificationAttachment {
+    convenience init(data: Data, dataType: String, options: [NSObject: AnyObject]?) throws {
+        let temporaryFolderName = ProcessInfo.processInfo.globallyUniqueString
+        let temporaryFolderURL = URL(fileURLWithPath: NSTemporaryDirectory()).appendingPathComponent(temporaryFolderName, isDirectory: true)
+
+        try FileManager.default.createDirectory(at: temporaryFolderURL, withIntermediateDirectories: true, attributes: nil)
+
+        let imageFileIdentifier = UUID().uuidString + "." + dataType
+        let fileURL = temporaryFolderURL.appendingPathComponent(imageFileIdentifier)
+
+        try data.write(to: fileURL)
+
+        try self.init(identifier: imageFileIdentifier, url: fileURL, options: options)
+    }
+}
diff --git a/project.yml b/project.yml
index 04a7a9d5b..ba1855b5f 100644
--- a/project.yml
+++ b/project.yml
@@ -54,7 +54,22 @@ targets:
       script: xcrun --sdk macosx mint run swiftgen config run
     postbuildScripts:
     - name: SwiftLint
-      script: 'xcrun --sdk macosx mint run swiftlint ./Sources'
+      script: 'xcrun --sdk macosx mint run swiftlint ./Sources/AppcuesKit'
+  AppcuesNotificationService:
+    type: framework
+    platform: iOS
+    settings:
+      base:
+        MARKETING_VERSION: 0.1.0
+        GENERATE_INFOPLIST_FILE: 'YES'
+        PRODUCT_BUNDLE_IDENTIFIER: com.appcues.notification-service
+        BUILD_LIBRARY_FOR_DISTRIBUTION: 'YES'
+    sources:
+    - path: Sources/AppcuesNotificationService
+      buildPhase: sources
+    postbuildScripts:
+    - name: SwiftLint
+      script: 'xcrun --sdk macosx mint run swiftlint ./Sources/AppcuesNotificationService'
   AppcuesKitTests:
     dependencies:
     - target: AppcuesKit