Send Email before certain days from today's date

Posted on 2010-11-11
Medium Priority
Last Modified: 2013-04-16

How can i send an email certain days from now in C# (Win Forms). Say today is January 1 2010. Now i fix an appointment with doctor on January 10 2010. But i wish that a reminder email (regarding appointment) needs to be sent 3 days before (i.e. January 7 2010). I am having an email code with me.

My requirements: Visual Studio 2005, C# (vb would also do), WinForms (Windows based applications)

Please help me how to achieve this?

Let me know if anything from me is needed.
Question by:meispisces

Assisted Solution

AliSyed earned 664 total points
ID: 34115181
DateTime EmailDate = DateTime.Appointmentdate.AddDays(-3);
You can put this emaildate in your db and send a reminder on that date

Ali Syed
LVL 32

Assisted Solution

by:Ephraim Wangoya
Ephraim Wangoya earned 664 total points
ID: 34117804

You need  a database to store the appointments and reminder days and status of the reminder.

ReminderDate,  Status, AppointmentDate

Calculate the the date for the reminder from the AppointmentDate as described by AliSyed

Your application should run a aquery to once or twice a day fetch all records that have the ReminderDate equal to current date and status of not sent. Iterate through this records sending the emails one at a time and set the status to sent if successful.
If using SQL Server, you can set up sql server to do this for you.

you can use a function in c# such as
public bool SendEmail(string EmailFrom, string EmailTo, string EmailSubject, string EmailMessage, string EmailHost)
    MailMessage Msg = new MailMessageEmailFrom, EmailTo, EmailSubject, EmailMessage);
    SmtpClient Client = new SmtpClientEmailHost);
    Client.UseDefaultCredentials = true;

    return true;
  catch (Exception ex)
     return false
LVL 13

Accepted Solution

devlab2012 earned 672 total points
ID: 34133781
create a table with following structure:


Now, get the data from this table using a query like:

SELECT * FROM tblEvents WHERE dateAdd(d, AlertBeforeDays, getDate()) >= EventDate AND IsEmailed = 0
This query will give you information of events for which you have to send an email.

Now send an email (you mentioned that you already have code to send email) and when the email is sent successfully, set the value of IsEmailed to 1.

Okay, now the problem is how this application will automatically send the alerts? You can simplay depend upon "Task Scheduler" in Windows. Create a task to execute every day or after every few hours. For XP, click Start -> Control Panel -> Scheduled Task.

If you want to write your own code, you can use System.Threading.Timer class or Timer control.

Author Comment

ID: 34298738
Yes please close it..
LVL 29

Expert Comment

by:Kumaraswamy R
ID: 34324605
This question has been classified as abandoned and is being closed as part of the Cleanup Program.  See my comment at the end of the question for more details.

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Today as you open your Outlook, you witness an error message: “Outlook is using an old copy of your Outlook Data File…”. Probably, Outlook is accessing an old OST file.
Read this tutorial to learn how to fix repeating password error prompts when setting up Gmail IMAP with Microsoft Outlook. The entire process is described with step by step, illustrated instructions. Enjoy...
Many of my clients call in with monstrous Gmail overloading issues with Outlook. A quick tip is to turn off the All Mail and Important folders from synching. Here is a quick video I made to show you how to turn off these and other folders in Gmail s…
In this video I will demonstrate how to set up Nine, which I now consider the best alternative email app to Touchdown.

569 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question