Not that all complicated just not possible with a batch command file. Batch files are limited. The reason you can't just spontaneously send e-mail should be obvious, it would be far too easy to spread spam and viruses that way.
In addition to what SparkMonkeyHellion suggested I would give AutoIT a try you can google the download. AutoIT is a automated script that will send keystrokes and anything you need applications. It is even freeware with BASIC-like scripting language designed for automating the Windows GUI and general scripting. If you can make a batch file you can use AutoIT.