looking for free smtp client source

for my application , its have to be cross platform does any body know where can i download ?

Let me google that for you

heheh ...

try to find .." free smtp cross platform " ( free as LGPL)

Like the one which comes with a Linux distro near you?

If you want to do it right, read this, it does take a minute to go through the whole thing, but specifications allow you to actually know what your doing. SMTP is simple, so it shouldn't be to hard to understand, and should you not know how to implement the sockets yourself, you should be learning sockets instead of this.