They probably don't have DVD rental at all in your country. Netflix in the US/CA and Lovefilm in the UK were the only DVD/Bluray mailing service that I'm aware

They probably don't have DVD rental at all in your country. Netflix in the US/CA and Lovefilm in the UK were the only DVD/Bluray mailing service that I'm aware of. Once they were able to offer streaming internationally, setting up mailorder service probably wasn't even considered.