I have a customer database of 100,00,000 records stored in a sql db.I need to send mass emails to those customers everyday at a particular time.I want to use thread pool to achive it.
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Using a loop to send multiple e-mails with alternate views
If I create a new thread on an ASP.NET page the IsThreadPoolThread property is true.
First question is, is it from ASP.NET pool or CLR pool ?
Second question is, if it is from ASP.NET pool then how to create a thread from CLR and don't use ASP.NET pool ?
I hear its not a good idea to use your asp.net site to do mass emails, resources etc
Hows GMAIL for this operation, what do you do ?
i'm trying to send mass email to all my users. But i cannot send too many email at a time because I would be treated as spam or blacklisted, not just by my own isp, maybe the user's server too.So, initially i was thinking to write a loop and loop through the list of emails and send out batch by batch. But this would require my website to be stay opened until it finish.so, any better suggestion? i'm using my own server to relay the message before sending it out. is there email queining feature in my own mail server?
View 8 RepliesI have created thread pool which have 5 threads. Both of them will start when my application start up. The problem is I created so many objects in thread loop call back function on each threads, and the memory is increase by second when app running, this is thread loop call back function:
void ThreadLoop(){
while(true){
var checkItems = _workItems.Where(w=>w.ActivedTime > 3).ToList();
foreach(var i in checkItems){
_workItems[i.Id].ActivedTime = 0;
_workItems[i.Id].ExecutePostBack();
}
//Recreate new _workItems dictionary
_workItems = _workItems.Where(w=>w.ActivedTime > 0).ToDictionary();
// Sleep thread to free up momory
Thread.Sleep(1000);
// Call Grab collector free memory
GC.Collect();
}
}
I'm confusing that, is calling GC.Collect() on each threads like that good or bad ? Dose it cause bad performence ?
I have a thread running in the background that will sleep and pull data from the database when something wakes it up. I am sending the emails using google apps using SmtpClient (code below).
I wanted to know if there is anything i be aware of? I plan to send only one email at a time (a registration or forgot password email). I am a little worried something can happen like an invalid email locking up the thread because i didnt set a timeout or maybe google apps happen to be done and causing the app to blow up. What should i be aware off? I should ask how i should test as well?
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I know how to send emails, but is it possible to send out text messages?
View 8 RepliesI'm needing to send around 500-2500 emails out at a time to internal email accounts. I'm wondering which was would be faster both for the mail server and for my client app. Should I send multiple emails with just different TO addresses, or just one with multiple BCC addresses? I tried testing this by sending a bunch to my own email and the multiple emails method work, but with the BCC and a single message I only get that single message in my inbox. Shouldn't I be getting as many copies as the number of times I put my address in the BCC line?
View 1 RepliesWould it be possible to creae a web form that will take an Excel sheet of email address or SQL Server Database and mass email to these people through a web form? If so, does anyone have or know some step by step instruction on how to do this?
View 19 RepliesIf I want to send an e-mail (up to 30) in response to user's action, what execution context do I do it from?
Do I do a sync call (mail server is in the same data center, so actual sending is fast)? Do I spawn a thread and send it from there? such that each user-request-to-send mail gets handled by a new thread? Do I have a background thread that handles a queue of e-mails?
The biggest issue I think, is that it is a shared web hosting. So I don't know what's a good way to install/start a windows service, or start a dedicated thread.
Details: ASP.NET MVC app, hosted on IIS 7.0 integrated mode, on discountasp.net using discauntasp.net smtp server.
Is there a better way? What's a "standard" way to accomplish this?
I want to remove checked items from checklistbox (winform control) in class file method which i am calling asynchronously using deletegate. but it showing me this error message:-
Cross-thread operation not valid: Control 'checkedListBox1' accessed from a thread other than the thread it was created on.
i have tried invoke required but again got the same error. Sample code is below:
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I need to send emails to users from my application at regular intervals.
Condition is: When a user registers to my site a confirmation mail will be send to the user. I have already done it. And if the user doesn't confirm the registration within 12 hours through that confirmaton mail the application must have to send a new confirmation mail to the same user and this should repeat for every next 12 hours until that user confirm the registration.
My Problem: When a user registers a new timer should have to be created for that user for sending emails in intervals of 12 hours. The email sending time for each user is based on his registration time. So we cannot use a common timer for sending mail to users.
Possible Duplicates:
ASP.NET- Sending an e-mail. how to send mail using C#?
How can I send emails from my ASP.NET web application?
I need to send birthday emails every day. I need something to check everyday on my database for birthdays, but I don't have any components to do that and I dont have rights to install it on my webserver. Is there a way to do it without installing anything?
View 6 Repliesi wanna know how can i send emails automatically every day by asp.net application and c#
View 2 RepliesI'm trying to send e-mails using net.mail. It works well until an e-mail from the list to send be invalid. if one is invalid it stops the application and i don't wanna this... if the e-mail is invalid it just send to the next and go ahead.
View 3 RepliesWhen users submits data, I want to send an automatic e-mail acknowledging their submission. Below is the code I am running now, which basically submits data into the DB.
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How to send emails by using System.Net.Mail [top]
CODE-BEHIND:
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i m sending mail by this method but it generate exception"SMTP EXCEPTION NOT HANDELED BY USER"
and in details it shows as:"base {System.Exception} = {"Failure sending mail."}
[System.Net.Mail.SmtpException] = {"Failure sending mail."}
StackTrace = " at System.Net.Mail.SmtpClient.Send(MailMessage message)
at ExptMail.Button1_Click(Object sender, EventArgs e) in f:\dh\websites\ExptMail.aspx.cs:line 32""
The objective is to send automated emails to which of whom come from the results of my LINQ to SQL script. As I am not sure on 'automated' stuff I was going to approach this in the aspect of having a field in the table that the results are taken from change after the emails have been sent i.e. obj.EmailSent = true; - So that everytime the admin homepage is loaded it isnt sending it out again (eliminating duplication).
From that I would have to create a method to detect a new year and upon that reset all entries of the EmailSent field in the DB table to 'false', but for now its just the initial problem thats causing confusion.
I was going to opt for a 'foreach' solution so that all the recipients, individually, get their emails and not all together. Its the 'foreach' I'm not sure on as well as setting all the results collected to the new value of 'EmailSent' to 'true'.
Here is my attempt:
C#:
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I need to send some merge emails. Today I'm doing it in word with an excell plan, but I need to automatize this.
I need to get some information from a excell archive and put it into a email body and finally send these emails to their own destination.
How can I do this ?
how i can send emails with a return path in ASP.net 3.5 / C# 3.5. I know this was possible few years back but now due to spoofing issues this is not possible. I have been looking on internet but no use. I want the emails if bounced, should reach my bounce mail box, which could be like Bounce@mydomain.com.
View 1 Repliesi have to write application for sending newsletter. what is the best way to send newsletter thoundands of users?
My requirement is
Each mail is seprately as To :
Every mail has unique Unsubscribe link
Is is good to use SMTP mail class of .net?
I look aound may questions in so but can't decide which approcah i should go?
Multi threaded Windows service
Use Mail Server
Add thread.sleep(2000) between each send.
I have a web application that allows a user to "join" our site. When the CreateUserWizard completes, I just have the code below in the bottom of my wizard tags; and this works!
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I need to now add a second email that'll tell site admins that this particular user has requested access. So the user gets an email saying for registering... account is pending authorization"! At the same time I need a second email to be sent to the site admins (just one email address) stating something like "A new user <%username%> has requested to join your site". This is what I tried, but doesn't work:
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Of course this isn't working because the CreateUserWizard automatically sends it to the CreateUserWizard.Email. I need to hardcode in the address I want the second email. So, I've tried this in my Register.aspx.vb file (I call this function from my Register.aspx file using "OnCreatedUser"):
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Now when I build my project I'm getting this error:
"Method 'Protected Sub CreateUserWizard1_CreatedUser(sender As Object, e As System.web.UI.WebControls.WizardNavigationEventArgs)' does not have the same signature as delegate 'Delegate Sub EventHandler(sender As Object, e As System.EventArgs)'
i am developing a website that sends emails out to customers. on my pc it works fine i depoyed to the production server and find out that does not send emails outside the domain.
i have 2 boxes one is windows server 2003 that hosting te website and the other is exchange 2003
i have this on my web.config
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