I notice that I cannot send up to 20 consecutives email.
I doubt that my web provider block it or my outlook???
I would like to make sure that we do not have a special thing to do to send up to 20 consecutive emails.
This blog post: http://www.chilkatsoft.com/p/p_176.asp
talks about SMTP connections. Oddly enough, it talks about minimizing SMTP connnections. However, in this case I think you want to specifically close and re-open the SMTP connection every N messages to satisfy your ISP’s restrictions. You can call the CloseSmtpConnection and OpenSmtpConnection methods to do it. Actually, you only need to call CloseSmtpConnection every N messages. The "open" happens automatically within SendEmail (or other methods) if the connection is not open…