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Send email to multiple recipients

In this post we’ll show how to send email message to multiple recipients.

If your email should look differently for each recipient (customized “Hello [FirstName] [LastName]” message) take a look at:

• Email template engine
• VERP (Variable Envelope Return Path)

If your email looks exactly the same for each recipient the easiest way is to use BCC field (Blind-Carbon-Copy), and specify Undisclosed recipients group as the message recipient:

MailBuilder builder = new MailBuilder(); builder.From.Add(new MailBox("[email protected]", "Alice")); builder.To.Add(new MailGroup("Undisclosed recipients")); builder.Bcc.Add(new MailBox("[email protected]", "Bob")); builder.Bcc.Add(new MailBox("[email protected]", "Tom")); builder.Bcc.Add(new MailBox("[email protected]", "John"));

Here’s entire sample, that creates email message, connects to SMTP server and sends the message:

// C# version MailBuilder builder = new MailBuilder(); builder.From.Add(new MailBox("[email protected]", "Alice")); builder.To.Add(new MailGroup("Undisclosed recipients")); builder.Bcc.Add(new MailBox("[email protected]", "Bob")); builder.Bcc.Add(new MailBox("[email protected]", "Tom")); builder.Bcc.Add(new MailBox("[email protected]", "John")); builder.Subject = "Put subject here"; builder.Html = "Put <strong>HTML</strong> message here."; // Plain text is automatically generated, but you can change it: //builder.Text = "Put plain text message here."; IMail email = builder.Create(); // Send the message using (Smtp smtp = new Smtp()) { smtp.Connect("server.example.com"); // or ConnectSSL for SSL smtp.UseBestLogin("user", "password"); // remove if not needed smtp.SendMessage(email); smtp.Close(); } ' VB.NET version Dim builder As New MailBuilder() builder.From.Add(New MailBox("[email protected]", "Alice")) builder.[To].Add(New MailGroup("Undisclosed recipients")) builder.Bcc.Add(New MailBox("[email protected]", "Bob")) builder.Bcc.Add(New MailBox("[email protected]", "Tom")) builder.Bcc.Add(New MailBox("[email protected]", "John")) builder.Subject = "Put subject here" builder.Htm = "Put <strong>HTML</strong> message here." ' Plain text is automatically generated, but you can change it: 'builder.Text ="Put plain text message here." Dim email As IMail = builder.Create() ' Send the message Using smtp As New Smtp() smtp.Connect("server.example.com") ' or ConnectSSL for SSL smtp.UseBestLogin("user", "password") ' remove if not needed smtp.SendMessage(email) smtp.Close() End Using

Tags: Email component SMTP

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