Sent emails log: add read (eye) and delete buttons matching files page style

app.py

@@ -3574,12 +3574,18 @@ def delete_journal_entry(message_id):
 @login_required
 def delete_sent_email(sent_id):
     """Löscht einen einzelnen Outbox-Eintrag."""
-    con = sqlite3.connect(EMAIL_JOURNAL_DB)
-    con.execute("DELETE FROM sent_emails WHERE id = ?", (sent_id,))
-    con.commit()
-    con.close()
-    flash('Gesendete Email aus Log gelöscht.', 'success')
-    return redirect(url_for('email_log_view'))
+    try:
+        con = sqlite3.connect(EMAIL_JOURNAL_DB)
+        con.execute("DELETE FROM sent_emails WHERE id = ?", (sent_id,))
+        con.commit()
+        con.close()
+        # JSON für fetch()-Aufrufe, Redirect-Fallback für direkte Formular-Posts
+        if 'application/json' in request.headers.get('Accept', ''):
+            return jsonify({'success': True})
+        flash('Gesendete Email aus Log gelöscht.', 'success')
+        return redirect(url_for('emails'))
+    except Exception as e:
+        return jsonify({'success': False, 'message': str(e)}), 500
 
 
 @app.route('/email-log')