diff --git a/AltServer/AnisetteDataManager.swift b/AltServer/AnisetteDataManager.swift
index bd45f67b..632dec33 100644
--- a/AltServer/AnisetteDataManager.swift
+++ b/AltServer/AnisetteDataManager.swift
@@ -116,12 +116,11 @@ private extension AnisetteDataManager
         let requestUUID = UUID().uuidString
         self.anisetteDataCompletionHandlers[requestUUID] = completion
         
-        if let mailApp = FileManager.default.urls(
-                        for: .applicationDirectory,
-                        in: .systemDomainMask
-                    ).first?.appendingPathComponent("Mail.app") {
-                        NSWorkspace.shared.open(mailApp)
-                    }
+        let isMailRunning = NSWorkspace.shared.runningApplications.map { $0.bundleIdentifier }.contains { "com.apple.mail" }
+        
+        if !isMailRunning, let mailApp = FileManager.default.urls(for: .applicationDirectory,in: .systemDomainMask).first?.appendingPathComponent("Mail.app") {
+            NSWorkspace.shared.open(mailApp)
+        }
         
         let timer = Timer(timeInterval: 5.0, repeats: false) { (timer) in
             self.finishRequest(forUUID: requestUUID, result: .failure(ALTServerError(.pluginNotFound)))