During last several months I received by post such QSL cards:
ALASKA
KNLS, QSL from Russian section, - received in ~1 month after sending report to questions|at|knls.net
COSTA RICA
RADIO EXTERIOR DE ESPANA, QSL received in ~2.5 months for report sent to amigosdx|at|rtve.es and ree|at|rtve.es
GERMANY
HCJB Andenstimme verified in 123 days my report sent to deutsch|at|andenstimme.org
I have also sent them the report on 6050 kHz Ecuador program, but they verified that one only by email, asking for return postage for postal reply.
KOREA
KBS World Radio
ALASKA
KNLS, QSL from Russian section, - received in ~1 month after sending report to questions|at|knls.net
COSTA RICA
RADIO EXTERIOR DE ESPANA, QSL received in ~2.5 months for report sent to amigosdx|at|rtve.es and ree|at|rtve.es
GERMANY
HCJB Andenstimme verified in 123 days my report sent to deutsch|at|andenstimme.org
I have also sent them the report on 6050 kHz Ecuador program, but they verified that one only by email, asking for return postage for postal reply.
KOREA
KBS World Radio