How to send Bulk mail without using loop Concepts

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I want to send 10000 mails at a time without using foreach,for,while concept in asp.net.Is there any way to do?Any one can help me?By Using for loop it taking more than 1 hour for 1000 mails.

Posted 7-May-14 0:03am

Ramu15

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Prasad Avunoori 7-May-14 6:09am

I shouldn't take that much time. There could be some problem with your smtp server

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Kornfeld Eliyahu Peter · Answer 1 · 2014-05-07T00:11:00

Solution 1

You can add multiple addresses to a single MailMessage object using the To[^] property, which is a collection of MailAddress objects...However sending that much emails in one bunch can get you on spammer's list very easily...

/DamithSL/
You can use also Bcc[^] property in the very same way, in which case receivers will not see others mail address...

Posted 7-May-14 0:11am

Kornfeld Eliyahu Peter

Updated 7-May-14 0:22am

v2

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DamithSL 7-May-14 6:17am

how about MailMessage.Bcc property :) then receiver will not see other email addresses

Kornfeld Eliyahu Peter 7-May-14 6:21am

Absolutely right!

Ramu15 7-May-14 6:29am

I want to show their email address in "to" individually.

Ramu15 7-May-14 6:21am

If i send like that everyone should see all emailids(10000) to everyone.I not interested to share all emailids to everyone.

Kornfeld Eliyahu Peter 7-May-14 6:23am

See update according to DamithSL's comment!

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) · Answer 2 · 2014-05-07T01:58:00

Solution 2

You can use SmtpClient.SendAsync Method (MailMessage, Object)[^].

Quote:
Sends the specified e-mail message to an SMTP server for delivery. This method does not block the calling thread and allows the caller to pass an object to the method that is invoked when the operation completes.

Posted 7-May-14 1:58am

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

Comments

Kornfeld Eliyahu Peter 7-May-14 8:00am

But remember that for that he will have to create 10000 MailMessage object on the run...

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 7-May-14 8:09am

Yeah !!! There is no other way out. I guess BCC is a good option, but it does not exactly do the same thing as we send the mail directly to the user.

Moreover, after one cycle, we should always dispose the objects. Thus, at a particular time, the system does not run out of memory as it encounters continuous disposal of previous objects.

However, I believe that using a Window Scheduler is a great idea to handle this kind of situations, because it won't have any impact on the Web App, which would run at the background.

What you think?

Kornfeld Eliyahu Peter 7-May-14 8:15am

The comment wasn't for you but to OP :-)
I think that his design went wrong somewhere - I can't see how that 10000 mail in one time can be a requirement!
I think that some scheduled job will be the best solution (I would think of SQL)...

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ) 7-May-14 8:30am

Yeah correct... :)

Thanks,
Tadit

How to send Bulk mail without using loop Concepts

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How to send Bulk mail without using loop Concepts

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