On my website I offer users to send email to other registered users.
Some times they need to send to up to 1000 users. As there are so many emails I have heard that not all email is sent and some blocked.
Is there a way to send so many email without being blocked? Is Microsoft, Google or other companies offering solutions for this that you know of? My website is in .net. I am using MailMessage. I send the email to SmtpClient.