We will use notification for undoing send

src/data/kmail2.notifyrc

@@ -468,3 +468,8 @@ Name[x-test]=xxFolder Archive Errorxx
 Name[zh_CN]=文件夹归档错误
 Name[zh_TW]=資料夾封存錯誤
 Action=Popup
+
+[Event/undosend]
+Name=An email can be undo send
+Action=Popup
+Urgency=Normal

src/undosend/undosendcreatejob.cpp

@@ -20,6 +20,7 @@
 
 #include "undosendcreatejob.h"
 #include "kmail_debug.h"
+//TODO add notification
 
 UndoSendCreateJob::UndoSendCreateJob(QObject *parent)
     : QObject(parent)

src/undosend/undosendmanager.cpp

@@ -19,6 +19,7 @@
 
 #include "undosendmanager.h"
 #include "undosendcreatejob.h"
+#include "kmail_debug.h"
 
 UndoSendManager::UndoSendManager(QObject *parent)
     : QObject(parent)
@@ -35,12 +36,13 @@ UndoSendManager *UndoSendManager::self()
     return &s_self;
 }
 
-void UndoSendManager::removeItem(qint64 index)
-{
-
-}
-
 void UndoSendManager::addItem(qint64 index, const QString &subject, int delay)
 {
-    //TODO
+    UndoSendCreateJob *job = new UndoSendCreateJob(this);
+    job->setAkonadiIndex(index);
+    job->setSubject(subject);
+    job->setDelay(delay);
+    if (!job->start()) {
+        qCWarning(KMAIL_LOG) << " Impossible to create job";
+    }
 }

src/undosend/undosendmanager.h

@@ -29,7 +29,6 @@ public:
     explicit UndoSendManager(QObject *parent = nullptr);
     ~UndoSendManager();
     static UndoSendManager *self();
-    void removeItem(qint64 index);
 
     void addItem(qint64 index, const QString &subject, int delay);
 };