When sending e-mail you have the choice between using your ISP, your web host or your own dedicated SMTP server (An SMTP server is a mailserver that you use to send email. It stores your messages and ensures that your messages are either delivered or returned to you with a failure message). Your ISP usually will provide an SMTP mail server but most ISPs will not want you to send bulk email through their mailservers. Many have restrictions on the number of messages you can send per hour. Your web host should provide you with a dedicated SMTP server. Particularly …