Mass, Bulk mailing. Built-in SMTP Engine. Multi threaded. Direct mail delivery. 300 mails at a time. HTML & text. Unlimited attachments. Auto Image embedding. Personalized mailing. Auto subscribe & unsubscribing. Import & Export of profile. Checks the validity of E-Mail-Adresse instantly. Filter conditions. Outlook Address book compatible. Datenbank compatibility. Priority setting. Life long up gradation. Only 260 kb. Just download and run. No installation.