Your pro version and large featured image

I have a couple of sites having large featured image. I think the size of the featured image could go all the way up to 6MB. You can refer to my site here at trrvel.com.

Do you think your pluggin will be able to correctly post the featured image to FB or Twitter?

Would you be able to allow me to try out the pro version in my sites? I am interested in your package with unlimited sites…

Thx