How to send one mail to many recipients asp.net ?

To specify multiple recipients for a MailMessage, simply separate each recipient with a semicolon. For example:
mail.To = "me@mycompany.com;him@hiscompany.com;her@hercompany.com";

Source: http://www.systemwebmail.com/faq/2.6.aspx

Dim mail As New MailMessage()
mail.To = "me@mycompany.com;him@hiscompany.com;her@hercompany.com"
mail.From = "you@yourcompany.com"
mail.Subject = "this is a test email."
mail.Body = "this is my test email body."
SmtpMail.SmtpServer = "localhost" 'your real server goes here
SmtpMail.Send(mail)

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i got errors :
property to is read only in line :   mail.To = "me@mycompany.com;him@hiscompany.com;her@hercompany.com"

and value of type string cannot be converted to system.net.mail.mailaddres in line : mail.From = "you@yourcompany.com"

and : SmtpMail is not declarated in lines :

 SmtpMail.SmtpServer = "localhost" 'your real server goes here
 SmtpMail.Send(mail)

You can also add them separatly ...


Function WyslijEmail_html_LISTA_OSOB(ByVal _pobierzdo As String, ByVal _temat As String, ByVal _tresc As String) As String
 
        Dim email_od As New MailAddress("obieg@epa", "Obieg Dokumentów")
        Dim email_do As New MailAddress(_pobierzdo, _pobierzdo)
        Dim msg As New MailMessage(email_od, email_do)


        msg.Add("test@test.com")
        msg.Add("test2@test.Com")
 
 ...

Can't do this because msg dosn't have add method.

What version of framework are you using ? I have just tested it here on my machine !

Sending Email from an ASP.NET 1.x Web Page
http://www.4guysfromrolla.com/webtech/080801-1.shtml

Sending Email in ASP.NET 2.0
http://aspnet.4guysfromrolla.com/articles/072606-1.aspx

.NET 2.0
        Dim mail As New System.Net.Mail.MailMessage
        mail.To.Add("test@test.com")
        mail.To.Add("test2@test.com")

.NET 1.1
        Dim mail2 As New System.Web.Mail.MailMessage
        mail2.To = "test@test.com; test2@test.com"

I use .NET 2.0
Ok now this code works but i have to do this in one line "mail1@email.pl;mail2@email.pl" .... any idea how ?

        Dim ToAddress1 As String = "mail1@mail.pl"
        Dim toaddress2 As String = "mail2@mail.pl"
        Dim email_od As New MailAddress("obieg@epa", "Obieg Dokumentów")
        Dim mm As New System.Net.Mail.MailMessage
        mm.To.Add(ToAddress1)
        mm.To.Add(toaddress2)
        mm.From = email_od
        mm.Subject = "temat"
        mm.Body = "tre["
        mm.IsBodyHtml = True
        Dim mailSender As New System.Net.Mail.SmtpClient()
        mailSender.Host = "192.168.2.10"
        mailSender.Send(mm)

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