Hotmailer - Version 3.0 Hotmailer is a bulk email sender, email address finder and verifier. It can efficiently search large amount of e- mail addresses from a mail server in a short time. With built in SMTP server, it will connect to the remote server and post email addresses for verification. If the email address is valid, Hotmailer will automatically send the mail. With a 56K internet connection speed, you can expect to send approximately 2000 or more mails per minute.