Mail Component Q/A - Junk Email, Message-ID, Custom Headers

Question

1. How do I prevent emails sent from going into the receiver’s Junk Email folder?
2. How do I set the Message-ID header?
3. How can I add additional headers?

Answer

1. It’s not under your control. External mail servers and the filtering done by the receivers mail client determine what is classified as junk.
2. Call AddHeaderField("Message-ID","newValue"). Also, be sure to set the mailman.AutoGenMessageId property = false because the Message-ID field is somewhat special. Chilkat automatically generates a new message ID with each email to prevent SMTP servers from dropping emails mistaken as duplicates. What happened in the past was that Chilkat customers would re-use the same email object without changing the Message-ID. The first email is sent OK, but subsequent emails are not because the SMTP server perceives them to be duplicates because of identical message IDs.
3. Call emali.AddHeaderField.