Why can't I message international sellers?

[sysrk]

When a US seller does not specify shipping to Canada, there is now no way for me to contact that seller.

In the past, many times, I've asked if a seller would ship to Canada even though not listed as such and received a positive answer.  Sellers often just don't think to list international shipping. 

[heidilynn0_3]

Hi sysrk.. Sellers now have the option of blocking communication as well as countries not shipped to. I assume many select because they do want to be writing .. i do not ship to your location. It is what it is.