CODEWITHSUNDEEP
c#emailcommand-linethunderbird
Chani Poz
Chani Poz

Reputation: 1463

Send many emails at once by Thunderbird by c#

I am sending emails to many people by Thunderbird by c#. I do it with loop. My problem is that when I run my application - for any email I send a new Thunderbird window is openning, and then I need to press "send" and so it is send. It is very inconvenient. How can I send all the emails at once?

My code:

string strCommand;
for(i=0;i<100;i++)
{
   strCommand = " -compose to=" + (char)34 + astrRecip[i] + (char)34 + ",";
   strCommand += "body=" + (char)34 + strMessage[i] + (char)34 + ",";
   strCommand += "subject=" + (char)34 + strSubject + (char)34 + ",";
   strCommand += "attachment=" + (char)34 + strAttachment[i] + (char)34;
   Process.Start(@"C:\Program Files\Mozilla Thunderbird\thunderbird", strCommand);
}

I think that because I write "-compose" to every email so it is open a new window, maybe if I write one command-line it will be OK. I tried, but with no success.

Upvotes: 3

Views: 5968

Answers (2)

Patrick
Patrick

Reputation: 17973

You can use multiple email addresses in one compose argument, as an example shows in Command line arguments - Thunderbird.

So, instead of starting the process in each loop, join all the email addresses and start one process afterwards. This is simple using string.Join.

string strCommand;
strCommand = " -compose to=" + (char)34 + string.Join(",", astrRecip) + (char)34 + ",";
strCommand += "body=" + (char)34 + strMessage[i] + (char)34 + ",";
strCommand += "subject=" + (char)34 + strSubject + (char)34 + ",";
strCommand += "attachment=" + (char)34 + strAttachment[i] + (char)34;
Process.Start(@"C:\Program Files\Mozilla Thunderbird\thunderbird", strCommand);

Edit: note that you can escape the " if you want using \". So instead of using (char)34 you can type

strCommand = " -compose to=\"" + string.Join(",", astrRecip) + "\",";

and, by using string format, this can be even easier to read.

strCommand = string.Format("-compose to=\"{0}\",", string.Join(",", astrRecip));

since you seperate the string from it's arguments.

Upvotes: 2

Daniel Hilgarth
Daniel Hilgarth

Reputation: 174457

You really should use the SmtpClient class from the .NET framework.

Upvotes: 6

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