Fanmail.biz

do you always put irc's in your envelope?
when do you?
and when don't you?

You don't have to, but you should if you are sending outside of your country. If you are sending inside of your country, you can just use stamps!

Stamps are best, but if you can't get them for the country, an IRC (or two) should be OK.

Have a look on the forum to see if anyone has had successes without including postage.