About Mail ServerThe Mail server integrated within PostCast will facilitate your e-mail delivery enormously. I shall quote two most important reasons, which would leave you delighted for using PostCast's Mail Server: 1. Undeliverable E-mail Messages Sending messages to mailing lists bearing a large number of e-mail addresses can be a real nuisance at times. After each sending you will notice that about 2-10% of the e-mail addresses from the list simply do not function any more. How will you notice that? Well, your employed mail server would deliver all messages sent to bad e-mail addresses to your mailbox. That might not be a problem if you happen to be sending about a hundred messages, but if your needs are a little higher i.e. if you are sending them to, say, 20000 e-mail addresses, then you would find yourself in a pretty unpleasant situation. You would have to download about 1000 undelivered messages! Imagine such a situation with a 56k Internet connection. 2. Problems with your ISP (Internet Service Provider) Before I explain what all this is about, let me repeat once again: PostCast is not a spam program, but it is certainly able to send thousands and thousands of messages to your clients, newsletter subscribers, etc. If you deliver a couple of thousand messages over your ISP mail server, the next day you would have an unpleasant phone call or your account would be frozen automatically. People are very sensitive to Spamming, particularly administrators who keep an eye on the server that you use to send messages. Surely, it would not be worthwhile explaining that it was no actually spam, that you actually run a client list which you wanted to contact, etc. I have encountered such situations personally and it resulted in software creation which would transform my Win95 based computer into a Mail Server. Every time I send messages, they leave directly from my computer. This technology is utilized by PostCast, but introducing several improvements. There are no undelivered messages, no waiting: the program would directly connect to the computer to which your message had been sent. Once delivered, the message is already in the recipient's mailbox. If the message is not delivered due to an error, it remains in the Outbox. The next time you send messages, PostCast would try again to send the undelivered one as well. How to use Mail Server Mail Server and LAN | 
