diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1c5808f..208fdc5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@
 
 ## Version 0.1.0 - 2025-12-20
 
-Adds Grokii, an AI-powered devRant bot that supports chat interactions and spam detection modes. Developers can now integrate this bot to enhance community engagement and moderation on devRant platforms.
+Adds persistent state management for mention processing, ensuring continuity across application restarts.
 
-**Changes:** 9 files, 1684 lines
-**Languages:** Markdown (386 lines), Other (1298 lines)
+**Changes:** 3 files, 66 lines
+**Languages:** Other (66 lines)
diff --git a/Sources/Grokii/Main.swift b/Sources/Grokii/Main.swift
index ecee99d..fd36c0a 100644
--- a/Sources/Grokii/Main.swift
+++ b/Sources/Grokii/Main.swift
@@ -123,11 +123,14 @@ extension Grokii {
                 temperature: temperature
             )
 
+            let stateManager = StateManager()
+
             let bot = MentionBot(
                 api: api,
                 token: token,
                 ai: ai,
                 logger: logger,
+                stateManager: stateManager,
                 botUsername: options.username,
                 dryRun: options.dryRun
             )
diff --git a/Sources/Grokii/MentionBot.swift b/Sources/Grokii/MentionBot.swift
index b3126f2..4245500 100644
--- a/Sources/Grokii/MentionBot.swift
+++ b/Sources/Grokii/MentionBot.swift
@@ -41,16 +41,18 @@ actor MentionBot {
     private let token: AuthToken
     private let ai: OpenRouterClient
     private let logger: BotLogger
+    private let stateManager: StateManager
     private let botUsername: String
     private let dryRun: Bool
 
-    private var processedNotificationIds: Set<String> = []
+    private var processedThisSession: Set<String> = []
 
     init(
         api: DevRantRequest,
         token: AuthToken,
         ai: OpenRouterClient,
         logger: BotLogger,
+        stateManager: StateManager,
         botUsername: String,
         dryRun: Bool = false
     ) {
@@ -58,6 +60,7 @@ actor MentionBot {
         self.token = token
         self.ai = ai
         self.logger = logger
+        self.stateManager = stateManager
         self.botUsername = botUsername.lowercased()
         self.dryRun = dryRun
     }
@@ -80,9 +83,12 @@ actor MentionBot {
 
         do {
             let mentions = try await fetchExternalMentions()
+            let lastTime = await stateManager.lastMentionTime
 
             let newMentions = mentions.filter { mention in
-                mention.to.lowercased() == botUsername && !processedNotificationIds.contains(mention.identifiers.guid)
+                mention.to.lowercased() == botUsername &&
+                mention.createdTime > lastTime &&
+                !processedThisSession.contains(mention.identifiers.guid)
             }
 
             if newMentions.isEmpty {
@@ -92,7 +98,7 @@ actor MentionBot {
 
             await logger.info("Found \(newMentions.count) new mention(s)")
 
-            for mention in newMentions {
+            for mention in newMentions.sorted(by: { $0.createdTime < $1.createdTime }) {
                 await processMention(mention)
             }
 
@@ -116,12 +122,12 @@ actor MentionBot {
     }
 
     private func processMention(_ mention: ExternalMention) async {
-        guard !processedNotificationIds.contains(mention.identifiers.guid) else {
+        guard !processedThisSession.contains(mention.identifiers.guid) else {
             await logger.debug("Already processed mention: \(mention.identifiers.guid)")
             return
         }
 
-        processedNotificationIds.insert(mention.identifiers.guid)
+        processedThisSession.insert(mention.identifiers.guid)
 
         do {
             let (rant, comments) = try await api.getRant(
@@ -151,6 +157,8 @@ actor MentionBot {
                 response: response
             )
 
+            await stateManager.updateLastMentionTime(mention.createdTime)
+
         } catch {
             await logger.error("Failed to process mention: \(error)")
         }
@@ -215,7 +223,7 @@ actor MentionBot {
     }
 
     func getStats() -> Int {
-        return processedNotificationIds.count
+        return processedThisSession.count
     }
 }
 
diff --git a/Sources/Grokii/StateManager.swift b/Sources/Grokii/StateManager.swift
new file mode 100644
index 0000000..809616e
--- /dev/null
+++ b/Sources/Grokii/StateManager.swift
@@ -0,0 +1,43 @@
+// retoor <retoor@molodetz.nl>
+
+import Foundation
+
+actor StateManager {
+    private struct State: Codable {
+        var lastMentionTime: Int
+    }
+
+    private let stateURL: URL
+    private var state: State
+
+    init() {
+        let homeDir = FileManager.default.homeDirectoryForCurrentUser
+        let grokiiDir = homeDir.appendingPathComponent(".grokii")
+
+        try? FileManager.default.createDirectory(at: grokiiDir, withIntermediateDirectories: true)
+
+        self.stateURL = grokiiDir.appendingPathComponent("state.json")
+
+        if let data = try? Data(contentsOf: stateURL),
+           let loaded = try? JSONDecoder().decode(State.self, from: data) {
+            self.state = loaded
+        } else {
+            self.state = State(lastMentionTime: 0)
+        }
+    }
+
+    var lastMentionTime: Int {
+        state.lastMentionTime
+    }
+
+    func updateLastMentionTime(_ time: Int) {
+        guard time > state.lastMentionTime else { return }
+        state.lastMentionTime = time
+        save()
+    }
+
+    private func save() {
+        guard let data = try? JSONEncoder().encode(state) else { return }
+        try? data.write(to: stateURL, options: .atomic)
+    }
+}