Send whatever you want. Everyone has their own way of doing things. I prefer using envelopes and drawing on the front and back. You can write a note, fill the envelope if you want or leave it empty. You'll find communication by post is left up to the individual on IUOMA a lot more than on sites like swap-bot. Hope that helps.
I have received both postcards and envelopes from people here. Whatever you feel like sending is greatly appreciated by anyone!!
Thanks for all the advice! I appreciate it :D
One of the 'rules' of Mail Art is that there are no rules.
So anything goes.
Or rather everything comes in the post.
And that's what makes it so much fun!
This is why I love mailart so much.