WorldCast is a software that acts like a self-sufficient SMTP relay, sending your customized message straight out the recipient's post server (without using your ISP's SMTP server, although it still offers the possibility use any SMTP server). It has extensive post merge capabilities . Given a certain emailing catalog, containing e-mail, name and job, for instance, the software generates a customized e-mail each recipient. WorldCast as e-mail-address validator verifies entire mailing catalog, reporting the good and bad e-mail addresses. It connects directly the recipient's SMTP server and checks it for you - , without actually sending any message them. It's a helpful tool keep updated e-mail database of your friends, customers, suppliers, etc., without actually disturbing them, since nothing is sent the recipients. It helps decrease internet traffic, because you can "wash" your mailing catalog beforehand, avoiding sending undeliverable messages that cause a ping-pong of useless messages between SMTP servers. As well as saving your Internet resources, WorldCast helps you save your money. WorldCast features a very complete syntax-oriented editor, post merge capabilities, HTML editing and preview support, accepting multi-byte (unicode) character set languages, such as Arabic, Japanese, Chinese, Korean. Features also advanced spell-checker (many dictionaries available for free), Thesaurus, extensive filtering of the results, crash recovery, message attachments, etc.