QK SMTP Server 

QK SMTP Server is a powerful but easy-to-use smtp server software, which can send mails from localhost to the recipients' mailboxes directly at an amazingly high speed. Arrived or not, you will get a feedback instantly.
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Auto Mailer 

Bulk email client for sending individual, personalized text or HTML messages to your mailing list. Emails can be sent with the built in SMTP server, your own SMTP server, or using a MAPI email client. Sends emails quickly with parallel threads.
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eeMailer- Alert Notification Sender 

Email sender (SMTP server) can be used by 3rd party software programs to send system alert notifications, SMS alerts, e-Commerce, security alerts, direct (bulk) mail, email notifications and alerts
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Winmail Mail Server 

Winmail Server is an enterprise class mail server software system offering a robust feature set, including extensive security measures. Winmail Server supports SMTP, POP3, IMAP, Webmail, LDAP, multiple domains, SMTP authentication, spam protection
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ORF Enterprise Edition 

ORF Enterprise Edition is an enterprise-level anti-spam solution that helps you to block spam before it reaches your network. ORF uses a combination of anti-spam technologies to stop the spam on SMTP protocol level.
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Advanced SMTP Server 

Advanced SMTP Server is a system-tray local SMTP server program for Windows that lets you send email messages directly from your computer to recipient mailboxes. Along with a mass mailer the program can be used as a relay server for sending newslette
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