Receiving feedback on your messages is indispensable for efficient correspondence. However, it often happens that your recipients postpone writing a reply or forget to write one at all. There is no harm in reminding them to give you an answer, but it is something you have to keep in mind or put in your to-do list. Naturally, modern scheduling tools, such as Outlook Tasks or any specialized standalone application, can alarm you to contact your recipient again if you create a respective task when you send the initial letter.